{"dataset":{"id":"9515c2fe-b20a-4ad3-bbb7-f63bf7880539","slug":"si-units","name":"SI units and prefixes (BIPM SI Reference Point)","description":"The 7 SI base units, 22 named SI derived units, and 24 SI prefixes from the BIPM SI Reference Point (the authoritative digital reference of the SI Digital Framework, CC BY 3.0 IGO). One document per unit or prefix: base units carry the current definition with its defining constant and superseded definitions, derived units the expression in base and other SI units, and prefixes the exponent and scaling factor.","visibility":"public","version":54,"documentCount":53,"createdAt":"2026-10-05T02:05:19.000Z","updatedAt":"2026-10-05T02:11:34.000Z","publisher":"Koskamo","license":"BIPM SI Reference Point (si-digital-framework.org), the SI defining constants, base and derived units, and prefixes; CC BY 3.0 IGO","reviewedAt":"2026-10-05T02:12:30.000Z"},"total":53,"documents":[{"id":"d94b05ef-c52f-4626-9c5b-4f5ef9c65f30","title":"kelvin (K)","sourceUrl":"https://si-digital-framework.org/SI/units/kelvin","version":1,"createdAt":"2026-10-05T02:05:26.000Z","updatedAt":"2026-10-05T02:05:27.000Z","text":"The kelvin (symbol K) is the SI base unit of thermodynamic temperature, per the BIPM SI Reference Point.\n\n- Name: kelvin\n- Symbol: K\n- Unit type: SI base unit\n- Quantity kind: thermodynamic temperature\n- Definition (status current, in force since 2019-05-20): The kelvin, symbol $\\rm{K}$, is the SI unit of thermodynamic temperature. It is defined by taking the fixed numerical value of the Boltzmann constant, ${k}$, to be $1.380\\:649 \\times 10^{-23}$ when expressed in the unit ${\\rm{J}}\\ {\\rm{K}}^{-1}$, which is equal to ${\\rm{kg}}\\ {\\rm{m}}^{2}\\ {\\rm{s}}^{-2}\\ {\\rm{K}}^{-1}$, where the kilogram, metre and second are defined in terms of ${h}$, $c$ and $\\Delta\\nu_{\\rm{Cs}}$.\n- Defining constant: Boltzmann constant (fixed numerical value 1.380 649 x 10⁻²³)\n- Defining equation: 1\\;{\\rm{K}} = \\left(\\frac{1.380\\:649 \\times 10^{-23}}{{k}}\\right) {\\rm{kg}}\\;{\\rm{m}}^2\\;{\\rm{s}}^{-2}\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM26-Res1\n- Superseded definitions: kelvin1967 (1967-10-13 to 2019-05-19)"},{"id":"8285604c-1ca6-48ab-8a8b-03864e91fe21","title":"mole (mol)","sourceUrl":"https://si-digital-framework.org/SI/units/mole","version":1,"createdAt":"2026-10-05T02:05:34.000Z","updatedAt":"2026-10-05T02:05:34.000Z","text":"The mole (symbol mol) is the SI base unit of amount of substance, per the BIPM SI Reference Point.\n\n- Name: mole\n- Symbol: mol\n- Unit type: SI base unit\n- Quantity kind: amount of substance\n- Definition (status current, in force since 2019-05-20): The mole, symbol $\\rm{mol}$, is the SI unit of amount of substance. One mole contains exactly $6.022\\:140\\:76 \\times 10^{23}$ elementary entities. This number is the fixed numerical value of the Avogadro constant, ${N_{\\rm{A}}}$, when expressed in the unit ${\\rm{mol}}^{-1}$ and is called the Avogadro number. The amount of substance, symbol ${n}$, of a system is a measure of the number of specified elementary entities. An elementary entity may be an atom, a molecule, an ion, an electron, any other particle or specified group of particles.\n- Defining constant: Avogadro constant (fixed numerical value 6.022 140 76 x 10²³)\n- Defining equation: 1\\;{\\rm{mol}} = \\left(\\frac{6.022\\:140\\:76 \\times 10^{23}}{{N_{\\rm{A}}}}\\right)\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM26-Res1\n- Superseded definitions: mole1971 (1971-10-04 to 2019-05-19)"},{"id":"d9e63421-1994-42f1-82af-11315d2bb83c","title":"candela (cd)","sourceUrl":"https://si-digital-framework.org/SI/units/candela","version":1,"createdAt":"2026-10-05T02:05:41.000Z","updatedAt":"2026-10-05T02:05:41.000Z","text":"The candela (symbol cd) is the SI base unit of luminous intensity, per the BIPM SI Reference Point.\n\n- Name: candela\n- Symbol: cd\n- Unit type: SI base unit\n- Quantity kind: luminous intensity\n- Definition (status current, in force since 2019-05-20): The candela, symbol $\\rm{cd}$, is the SI unit of luminous intensity in a given direction. It is defined by taking the fixed numerical value of the luminous efficacy of monochromatic radiation of frequency ${540 \\times 10^{12}}\\ {{\\rm{Hz}}}$, ${K_{\\rm{cd}}}$, to be ${683}$ when expressed in the unit ${\\rm{lm}}\\ {\\rm{W}}^{-1} $, which is equal to ${\\rm{cd}}\\ {\\rm{sr}}\\ {\\rm{W}}^{-1}$, or ${\\rm{cd}}\\ {\\rm{sr}}\\ {\\rm{kg}}^{-1}\\ {\\rm{m}}^{-2}\\ {\\rm{s}}^{3}$, where the kilogram, metre and second are defined in terms of ${h}$, $c$ and $\\Delta\\nu_{\\rm{Cs}}$.\n- Defining constant: luminous efficacy (fixed numerical value 683)\n- Defining equation: 1\\;{\\rm{cd}} = \\left(\\frac{{K_{\\rm{cd}}}}{683}\\right) {\\rm{kg}}\\;{\\rm{m}}^2\\;{\\rm{s}}^{-3}\\;{\\rm{sr}}^{-1}\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM26-Res1\n- Superseded definitions: candela1948 (1948-01-01 to 1967-10-12); candela1967 (1967-10-13 to 1979-10-10); candela1979 (1979-10-11 to 2019-05-19)"},{"id":"b387751f-ee05-45d7-8fa8-7f9a76b9dad1","title":"ampere (A)","sourceUrl":"https://si-digital-framework.org/SI/units/ampere","version":1,"createdAt":"2026-10-05T02:05:48.000Z","updatedAt":"2026-10-05T02:05:48.000Z","text":"The ampere (symbol A) is the SI base unit of electric current, per the BIPM SI Reference Point.\n\n- Name: ampere\n- Symbol: A\n- Unit type: SI base unit\n- Quantity kind: electric current\n- Definition (status current, in force since 2019-05-20): The ampere, symbol $\\rm{A}$, is the SI unit of electric current. It is defined by taking the fixed numerical value of the elementary charge, ${e}$, to be ${1.602\\:176\\:634 \\times 10^{-19}}$ when expressed in the unit $\\rm{C}$, which is equal to ${\\rm{A}}\\ {\\rm{s}}$, where the second is defined in terms of $\\Delta\\nu_{\\rm{Cs}}$.\n- Defining constant: elementary charge (fixed numerical value 1.602 176 634 x 10⁻¹⁹)\n- Defining equation: 1\\;{\\rm{A}} = \\left(\\frac{{e}}{{1.602\\:176\\:634 \\times 10^{-19}}}\\right) {\\rm{s}}^{-1}\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM26-Res1\n- Superseded definitions: ampere1948 (1948-01-01 to 2019-05-19)"},{"id":"ca8d0f8b-c10a-4db5-bed3-4cf06b14cc5f","title":"kilogram (kg)","sourceUrl":"https://si-digital-framework.org/SI/units/kilogram","version":1,"createdAt":"2026-10-05T02:05:56.000Z","updatedAt":"2026-10-05T02:05:56.000Z","text":"The kilogram (symbol kg) is the SI base unit of mass, per the BIPM SI Reference Point.\n\n- Name: kilogram\n- Symbol: kg\n- Unit type: SI base unit\n- Quantity kind: mass\n- Definition (status current, in force since 2019-05-20): The kilogram, symbol $\\rm{kg}$, is the SI unit of mass. It is defined by taking the fixed numerical value of the Planck constant, ${h}$, to be $6.626\\:070\\:15 \\times 10^{-34}$ when expressed in the unit ${\\rm{J}}\\ {\\rm{s}}$, which is equal to ${\\rm{kg}}\\ {\\rm{m}}^{2}\\ {\\rm{s}}^{-1}$, where the metre and the second are defined in terms of $c$ and $\\Delta\\nu_{\\rm{Cs}}$.\n- Defining constant: Planck constant (fixed numerical value 6.626 070 15 x 10⁻³⁴)\n- Defining equation: 1\\;{\\rm{kg}} = \\left(\\frac{{h}}{6.626\\:070\\:15 \\times 10^{-34}}\\right) {\\rm{m}}^{-2}\\;{\\rm{s}}\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM26-Res1\n- Superseded definitions: kilogram1901 (1901-05-20 to 2019-05-19)\n- Prefixed unit: kilo + gram"},{"id":"2c43112f-1937-40be-9974-08eff930475a","title":"second (s)","sourceUrl":"https://si-digital-framework.org/SI/units/second","version":1,"createdAt":"2026-10-05T02:06:02.000Z","updatedAt":"2026-10-05T02:06:03.000Z","text":"The second (symbol s) is the SI base unit of time, per the BIPM SI Reference Point.\n\n- Name: second\n- Symbol: s\n- Unit type: SI base unit\n- Quantity kind: time\n- Definition (status current, in force since 2019-05-20): The second, symbol $\\rm{s}$, is the SI unit of time. It is defined by taking the fixed numerical value of the caesium frequency, $\\Delta\\nu_{\\rm{Cs}}$, the unperturbed ground-state hyperfine transition frequency of the caesium 133 atom, to be ${9\\:192\\:631\\:770}$ when expressed in the unit ${\\rm{Hz}}$, which is equal to ${\\rm{s}}^{-1}$.\n- Defining constant: hyperfine transition frequency of Cs-133 (fixed numerical value 9 192 631 770)\n- Defining equation: 1\\;{\\rm{Hz}} = \\frac{\\Delta\\nu_{\\rm{Cs}}}{{9\\:192\\:631\\:770}} \\quad {\\rm{or}} \\quad 1\\;{\\rm{s}} = \\frac{{9\\:192\\:631\\:770}}{\\Delta\\nu_{\\rm{Cs}}}\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM26-Res1\n- Superseded definitions: second1960 (1960-10-18 to 1967-10-12); second1967 (1967-10-13 to 2019-05-19)"},{"id":"4c52433b-d640-4741-b349-aefafa556cb0","title":"metre (m)","sourceUrl":"https://si-digital-framework.org/SI/units/metre","version":1,"createdAt":"2026-10-05T02:06:10.000Z","updatedAt":"2026-10-05T02:06:10.000Z","text":"The metre (symbol m) is the SI base unit of length, per the BIPM SI Reference Point.\n\n- Name: metre\n- Symbol: m\n- Unit type: SI base unit\n- Quantity kind: length\n- Definition (status current, in force since 2019-05-20): The metre, symbol $\\rm{m}$, is the SI unit of length. It is defined by taking the fixed numerical value of the speed of light in vacuum, $c$, to be $299\\:792\\:458$ when expressed in the unit ${\\rm{m}}\\ {{\\rm{s}}^{-1}}$, where the second is defined in terms of the caesium frequency $\\Delta\\nu_{\\rm{Cs}}$.\n- Defining constant: speed of light (fixed numerical value 299 792 458)\n- Defining equation: 1\\;{\\rm{m}} = \\left(\\frac{c}{299\\:792\\:458}\\right) {\\rm{s}} = \\frac{{9\\:192\\:631\\:770}}{299\\:792\\:458} \\frac{c}{\\Delta\\nu_{\\rm{Cs}}} \\approx {30.663\\:319} \\frac{c}{\\Delta\\nu_{\\rm{Cs}}}\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM26-Res1\n- Superseded definitions: metre1889 (1889-05-20 to 1927-09-29); metre1927 (1927-09-30 to 1960-10-13); metre1960 (1960-10-14 to 1983-10-16); metre1983 (1983-10-17 to 2019-05-19)"},{"id":"aff04b75-ac22-4993-9bb3-8a9f33690edd","title":"becquerel (Bq)","sourceUrl":"https://si-digital-framework.org/SI/units/becquerel","version":1,"createdAt":"2026-10-05T02:06:16.000Z","updatedAt":"2026-10-05T02:06:17.000Z","text":"The becquerel (symbol Bq) is a named SI derived unit of activity referred to a radionuclide, per the BIPM SI Reference Point.\n\n- Name: becquerel\n- Symbol: Bq\n- Unit type: Named SI derived unit\n- Quantity kind: activity referred to a radionuclide\n- Expressed in base SI units: s⁻¹\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM15-Res8\n- SI prefix restriction: false"},{"id":"186d3927-7f04-4c3f-9157-d82b636eee42","title":"degree Celsius (°C)","sourceUrl":"https://si-digital-framework.org/SI/units/degreeCelsius","version":1,"createdAt":"2026-10-05T02:06:23.000Z","updatedAt":"2026-10-05T02:06:24.000Z","text":"The degree Celsius (symbol °C) is a named SI derived unit of Celsius temperature, per the BIPM SI Reference Point.\n\n- Name: degree Celsius\n- Symbol: °C\n- Unit type: Named SI derived unit\n- Quantity kind: Celsius temperature\n- Expressed in base SI units: K\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM9-Res7\n- SI prefix restriction: false"},{"id":"a8856561-e864-4cb6-aa85-bcc70fcd7768","title":"farad (F)","sourceUrl":"https://si-digital-framework.org/SI/units/farad","version":1,"createdAt":"2026-10-05T02:06:31.000Z","updatedAt":"2026-10-05T02:06:31.000Z","text":"The farad (symbol F) is a named SI derived unit of capacitance, per the BIPM SI Reference Point.\n\n- Name: farad\n- Symbol: F\n- Unit type: Named SI derived unit\n- Quantity kind: capacitance\n- Expressed in base SI units: kg⁻¹ m⁻² s⁴ A²\n- Expressed in other SI units: C V⁻¹\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM9-Res7\n- SI prefix restriction: false"},{"id":"cbe84881-1362-427a-b2d3-923eec513ea5","title":"gray (Gy)","sourceUrl":"https://si-digital-framework.org/SI/units/gray","version":1,"createdAt":"2026-10-05T02:06:38.000Z","updatedAt":"2026-10-05T02:06:38.000Z","text":"The gray (symbol Gy) is a named SI derived unit of absorbed dose and kerma, per the BIPM SI Reference Point.\n\n- Name: gray\n- Symbol: Gy\n- Unit type: Named SI derived unit\n- Quantity kind: absorbed dose; kerma\n- Expressed in base SI units: m² s⁻²\n- Expressed in other SI units: J kg⁻¹\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM15-Res9\n- SI prefix restriction: false"},{"id":"fe684c4f-ed8b-4bbc-b501-a47bf09a4ad4","title":"henry (H)","sourceUrl":"https://si-digital-framework.org/SI/units/henry","version":1,"createdAt":"2026-10-05T02:06:45.000Z","updatedAt":"2026-10-05T02:06:45.000Z","text":"The henry (symbol H) is a named SI derived unit of inductance, per the BIPM SI Reference Point.\n\n- Name: henry\n- Symbol: H\n- Unit type: Named SI derived unit\n- Quantity kind: inductance\n- Expressed in base SI units: kg m² s⁻² A⁻²\n- Expressed in other SI units: Wb A⁻¹\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM9-Res7\n- SI prefix restriction: false"},{"id":"e6d98a70-74f3-482e-9300-1d6bab741d55","title":"hertz (Hz)","sourceUrl":"https://si-digital-framework.org/SI/units/hertz","version":1,"createdAt":"2026-10-05T02:06:52.000Z","updatedAt":"2026-10-05T02:06:52.000Z","text":"The hertz (symbol Hz) is a named SI derived unit of frequency, per the BIPM SI Reference Point.\n\n- Name: hertz\n- Symbol: Hz\n- Unit type: Named SI derived unit\n- Quantity kind: frequency\n- Expressed in base SI units: s⁻¹\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM9-Res7\n- SI prefix restriction: false"},{"id":"f21f682f-83ff-457e-8548-d2c6d6349cf2","title":"katal (kat)","sourceUrl":"https://si-digital-framework.org/SI/units/katal","version":1,"createdAt":"2026-10-05T02:06:59.000Z","updatedAt":"2026-10-05T02:06:59.000Z","text":"The katal (symbol kat) is a named SI derived unit of catalytic activity, per the BIPM SI Reference Point.\n\n- Name: katal\n- Symbol: kat\n- Unit type: Named SI derived unit\n- Quantity kind: catalytic activity\n- Expressed in base SI units: mol s⁻¹\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM21-Res12\n- SI prefix restriction: false"},{"id":"787376a6-b6e4-41ed-802b-7c57c80ac152","title":"lux (lx)","sourceUrl":"https://si-digital-framework.org/SI/units/lux","version":1,"createdAt":"2026-10-05T02:07:06.000Z","updatedAt":"2026-10-05T02:07:06.000Z","text":"The lux (symbol lx) is a named SI derived unit of illuminance, per the BIPM SI Reference Point.\n\n- Name: lux\n- Symbol: lx\n- Unit type: Named SI derived unit\n- Quantity kind: illuminance\n- Expressed in base SI units: cd sr m⁻²\n- Expressed in other SI units: lm m⁻²\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM11-Res12\n- SI prefix restriction: false"},{"id":"df409fd5-d611-4d08-8586-f0fa91b3245c","title":"ohm (Ω)","sourceUrl":"https://si-digital-framework.org/SI/units/ohm","version":1,"createdAt":"2026-10-05T02:07:13.000Z","updatedAt":"2026-10-05T02:07:13.000Z","text":"The ohm (symbol Ω) is a named SI derived unit of electric resistance, per the BIPM SI Reference Point.\n\n- Name: ohm\n- Symbol: Ω\n- Unit type: Named SI derived unit\n- Quantity kind: electric resistance\n- Expressed in base SI units: kg m² s⁻³ A⁻²\n- Expressed in other SI units: V A⁻¹\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM9-Res7\n- SI prefix restriction: false"},{"id":"63a0e73e-5030-433d-8d54-24fd1b3b7ded","title":"pascal (Pa)","sourceUrl":"https://si-digital-framework.org/SI/units/pascal","version":1,"createdAt":"2026-10-05T02:07:20.000Z","updatedAt":"2026-10-05T02:07:20.000Z","text":"The pascal (symbol Pa) is a named SI derived unit of pressure, per the BIPM SI Reference Point.\n\n- Name: pascal\n- Symbol: Pa\n- Unit type: Named SI derived unit\n- Quantity kind: pressure\n- Expressed in base SI units: kg m⁻¹ s⁻²\n- Expressed in other SI units: N m⁻²\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM14-Decl\n- SI prefix restriction: false"},{"id":"58aeb609-9cf0-44bb-8caa-41a3a40f3ee6","title":"siemens (S)","sourceUrl":"https://si-digital-framework.org/SI/units/siemens","version":1,"createdAt":"2026-10-05T02:07:27.000Z","updatedAt":"2026-10-05T02:07:27.000Z","text":"The siemens (symbol S) is a named SI derived unit of electric conductance, per the BIPM SI Reference Point.\n\n- Name: siemens\n- Symbol: S\n- Unit type: Named SI derived unit\n- Quantity kind: electric conductance\n- Expressed in base SI units: kg⁻¹ m⁻² s³ A²\n- Expressed in other SI units: A V⁻¹\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM14-Decl\n- SI prefix restriction: false"},{"id":"39607e72-e4f7-4649-bc3c-f1506633e9ee","title":"sievert (Sv)","sourceUrl":"https://si-digital-framework.org/SI/units/sievert","version":1,"createdAt":"2026-10-05T02:07:34.000Z","updatedAt":"2026-10-05T02:07:34.000Z","text":"The sievert (symbol Sv) is a named SI derived unit of dose equivalent, per the BIPM SI Reference Point.\n\n- Name: sievert\n- Symbol: Sv\n- Unit type: Named SI derived unit\n- Quantity kind: dose equivalent\n- Expressed in base SI units: m² s⁻²\n- Expressed in other SI units: J kg⁻¹\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM16-Res5\n- SI prefix restriction: false"},{"id":"bac4f510-b564-4fd1-91a4-032cdd9ae8b6","title":"tesla (T)","sourceUrl":"https://si-digital-framework.org/SI/units/tesla","version":1,"createdAt":"2026-10-05T02:07:41.000Z","updatedAt":"2026-10-05T02:07:41.000Z","text":"The tesla (symbol T) is a named SI derived unit of magnetic flux density, per the BIPM SI Reference Point.\n\n- Name: tesla\n- Symbol: T\n- Unit type: Named SI derived unit\n- Quantity kind: magnetic flux density\n- Expressed in base SI units: kg s⁻² A⁻¹\n- Expressed in other SI units: Wb m⁻²\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM11-Res12\n- SI prefix restriction: false"},{"id":"78757f62-72d0-47d4-b0ac-4e6d5eb8d32f","title":"coulomb (C)","sourceUrl":"https://si-digital-framework.org/SI/units/coulomb","version":1,"createdAt":"2026-10-05T02:07:48.000Z","updatedAt":"2026-10-05T02:07:48.000Z","text":"The coulomb (symbol C) is a named SI derived unit of electric charge, per the BIPM SI Reference Point.\n\n- Name: coulomb\n- Symbol: C\n- Unit type: Named SI derived unit\n- Quantity kind: electric charge\n- Expressed in base SI units: A s\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM9-Res7\n- SI prefix restriction: false"},{"id":"d66c8618-8f6c-4375-9d05-08d69c7e8f2b","title":"lumen (lm)","sourceUrl":"https://si-digital-framework.org/SI/units/lumen","version":1,"createdAt":"2026-10-05T02:07:55.000Z","updatedAt":"2026-10-05T02:07:56.000Z","text":"The lumen (symbol lm) is a named SI derived unit of luminous flux, per the BIPM SI Reference Point.\n\n- Name: lumen\n- Symbol: lm\n- Unit type: Named SI derived unit\n- Quantity kind: luminous flux\n- Expressed in base SI units: cd sr\n- Expressed in other SI units: cd sr\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM11-Res12\n- SI prefix restriction: false"},{"id":"2f4bffda-42d9-4c32-9184-ac818733cfed","title":"watt (W)","sourceUrl":"https://si-digital-framework.org/SI/units/watt","version":1,"createdAt":"2026-10-05T02:08:03.000Z","updatedAt":"2026-10-05T02:08:03.000Z","text":"The watt (symbol W) is a named SI derived unit of power, per the BIPM SI Reference Point.\n\n- Name: watt\n- Symbol: W\n- Unit type: Named SI derived unit\n- Quantity kind: power\n- Expressed in base SI units: kg m² s⁻³\n- Expressed in other SI units: J s⁻¹\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM11-Res12\n- SI prefix restriction: false"},{"id":"95ec9aeb-849c-49f1-8b7e-b62c3fd68bf1","title":"newton (N)","sourceUrl":"https://si-digital-framework.org/SI/units/newton","version":1,"createdAt":"2026-10-05T02:08:10.000Z","updatedAt":"2026-10-05T02:08:10.000Z","text":"The newton (symbol N) is a named SI derived unit of force, per the BIPM SI Reference Point.\n\n- Name: newton\n- Symbol: N\n- Unit type: Named SI derived unit\n- Quantity kind: force\n- Expressed in base SI units: kg m s⁻²\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM9-Res7\n- SI prefix restriction: false"},{"id":"87d363d5-a61d-4182-b248-1179d426422b","title":"weber (Wb)","sourceUrl":"https://si-digital-framework.org/SI/units/weber","version":1,"createdAt":"2026-10-05T02:08:17.000Z","updatedAt":"2026-10-05T02:08:17.000Z","text":"The weber (symbol Wb) is a named SI derived unit of magnetic flux, per the BIPM SI Reference Point.\n\n- Name: weber\n- Symbol: Wb\n- Unit type: Named SI derived unit\n- Quantity kind: magnetic flux\n- Expressed in base SI units: kg m² s⁻² A⁻¹\n- Expressed in other SI units: V s\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM11-Res12\n- SI prefix restriction: false"},{"id":"9b2305b0-1c58-4bc3-a218-1664512aad35","title":"radian (rad)","sourceUrl":"https://si-digital-framework.org/SI/units/radian","version":1,"createdAt":"2026-10-05T02:08:24.000Z","updatedAt":"2026-10-05T02:08:24.000Z","text":"The radian (symbol rad) is a named SI derived unit of plane angle, per the BIPM SI Reference Point.\n\n- Name: radian\n- Symbol: rad\n- Unit type: Named SI derived unit\n- Quantity kind: plane angle\n- Expressed in base SI units: m m⁻¹\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM11-Res12\n- SI prefix restriction: false"},{"id":"101d5759-fb57-4458-86bd-8acf72d7f6bb","title":"steradian (sr)","sourceUrl":"https://si-digital-framework.org/SI/units/steradian","version":1,"createdAt":"2026-10-05T02:08:31.000Z","updatedAt":"2026-10-05T02:08:31.000Z","text":"The steradian (symbol sr) is a named SI derived unit of solid angle, per the BIPM SI Reference Point.\n\n- Name: steradian\n- Symbol: sr\n- Unit type: Named SI derived unit\n- Quantity kind: solid angle\n- Expressed in base SI units: m² m⁻²\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM11-Res12\n- SI prefix restriction: false"},{"id":"a172287b-99e8-4bca-bcdc-e2cfd415903d","title":"joule (J)","sourceUrl":"https://si-digital-framework.org/SI/units/joule","version":1,"createdAt":"2026-10-05T02:08:38.000Z","updatedAt":"2026-10-05T02:08:38.000Z","text":"The joule (symbol J) is a named SI derived unit of energy, per the BIPM SI Reference Point.\n\n- Name: joule\n- Symbol: J\n- Unit type: Named SI derived unit\n- Quantity kind: energy\n- Expressed in base SI units: kg m² s⁻²\n- Expressed in other SI units: N m\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM11-Res12\n- SI prefix restriction: false"},{"id":"4132bcc3-4038-4946-ae7d-4ec35ce84fb4","title":"volt (V)","sourceUrl":"https://si-digital-framework.org/SI/units/volt","version":1,"createdAt":"2026-10-05T02:08:45.000Z","updatedAt":"2026-10-05T02:08:45.000Z","text":"The volt (symbol V) is a named SI derived unit of electric potential difference, per the BIPM SI Reference Point.\n\n- Name: volt\n- Symbol: V\n- Unit type: Named SI derived unit\n- Quantity kind: electric potential difference\n- Expressed in base SI units: kg m² s⁻³ A⁻¹\n- Expressed in other SI units: W A⁻¹\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM11-Res12\n- SI prefix restriction: false"},{"id":"9ce0d6c5-926d-44cd-8519-56134259b5de","title":"quetta (Q)","sourceUrl":"https://si-digital-framework.org/SI/prefixes/quetta","version":1,"createdAt":"2026-10-05T02:08:52.000Z","updatedAt":"2026-10-05T02:08:52.000Z","text":"quetta (symbol Q) is the SI prefix for a factor of 10³⁰ (scaling factor 1000000000000000000000000000000), per the BIPM SI Reference Point.\n\n- Name: quetta\n- Symbol: Q\n- Exponent: 30\n- Scaling factor: 1000000000000000000000000000000\n- Value datatype: xsd:integer\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM27-Res3"},{"id":"3c7c1a6a-a979-48d5-ad2f-21090837dcdb","title":"ronna (R)","sourceUrl":"https://si-digital-framework.org/SI/prefixes/ronna","version":1,"createdAt":"2026-10-05T02:08:59.000Z","updatedAt":"2026-10-05T02:08:59.000Z","text":"ronna (symbol R) is the SI prefix for a factor of 10²⁷ (scaling factor 1000000000000000000000000000), per the BIPM SI Reference Point.\n\n- Name: ronna\n- Symbol: R\n- Exponent: 27\n- Scaling factor: 1000000000000000000000000000\n- Value datatype: xsd:integer\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM27-Res3"},{"id":"138a3a6b-dbd0-4ef4-8fcf-60526024b5ec","title":"yotta (Y)","sourceUrl":"https://si-digital-framework.org/SI/prefixes/yotta","version":1,"createdAt":"2026-10-05T02:09:06.000Z","updatedAt":"2026-10-05T02:09:06.000Z","text":"yotta (symbol Y) is the SI prefix for a factor of 10²⁴ (scaling factor 1000000000000000000000000), per the BIPM SI Reference Point.\n\n- Name: yotta\n- Symbol: Y\n- Exponent: 24\n- Scaling factor: 1000000000000000000000000\n- Value datatype: xsd:integer\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM19-Res4"},{"id":"08baccc5-9103-4a96-bba0-70068d95a9ec","title":"zetta (Z)","sourceUrl":"https://si-digital-framework.org/SI/prefixes/zetta","version":1,"createdAt":"2026-10-05T02:09:13.000Z","updatedAt":"2026-10-05T02:09:13.000Z","text":"zetta (symbol Z) is the SI prefix for a factor of 10²¹ (scaling factor 1000000000000000000000), per the BIPM SI Reference Point.\n\n- Name: zetta\n- Symbol: Z\n- Exponent: 21\n- Scaling factor: 1000000000000000000000\n- Value datatype: xsd:integer\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM19-Res4"},{"id":"7ba561b7-a1e6-4ec2-b5ec-cf5a0ff6f360","title":"exa (E)","sourceUrl":"https://si-digital-framework.org/SI/prefixes/exa","version":1,"createdAt":"2026-10-05T02:09:20.000Z","updatedAt":"2026-10-05T02:09:20.000Z","text":"exa (symbol E) is the SI prefix for a factor of 10¹⁸ (scaling factor 1000000000000000000), per the BIPM SI Reference Point.\n\n- Name: exa\n- Symbol: E\n- Exponent: 18\n- Scaling factor: 1000000000000000000\n- Value datatype: xsd:integer\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM15-Res10"},{"id":"ce49e2cc-a044-41fe-aad4-8ebf90761de8","title":"peta (P)","sourceUrl":"https://si-digital-framework.org/SI/prefixes/peta","version":1,"createdAt":"2026-10-05T02:09:27.000Z","updatedAt":"2026-10-05T02:09:27.000Z","text":"peta (symbol P) is the SI prefix for a factor of 10¹⁵ (scaling factor 1000000000000000), per the BIPM SI Reference Point.\n\n- Name: peta\n- Symbol: P\n- Exponent: 15\n- Scaling factor: 1000000000000000\n- Value datatype: xsd:integer\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM15-Res10"},{"id":"688d338b-c5ae-46b8-beae-fe179c97c5f8","title":"tera (T)","sourceUrl":"https://si-digital-framework.org/SI/prefixes/tera","version":1,"createdAt":"2026-10-05T02:09:34.000Z","updatedAt":"2026-10-05T02:09:34.000Z","text":"tera (symbol T) is the SI prefix for a factor of 10¹² (scaling factor 1000000000000), per the BIPM SI Reference Point.\n\n- Name: tera\n- Symbol: T\n- Exponent: 12\n- Scaling factor: 1000000000000\n- Value datatype: xsd:integer\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM11-Res12"},{"id":"85dc1346-843d-4759-8cb5-7c230d02c71b","title":"giga (G)","sourceUrl":"https://si-digital-framework.org/SI/prefixes/giga","version":1,"createdAt":"2026-10-05T02:09:41.000Z","updatedAt":"2026-10-05T02:09:41.000Z","text":"giga (symbol G) is the SI prefix for a factor of 10⁹ (scaling factor 1000000000), per the BIPM SI Reference Point.\n\n- Name: giga\n- Symbol: G\n- Exponent: 9\n- Scaling factor: 1000000000\n- Value datatype: xsd:integer\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM11-Res12"},{"id":"050d944f-915d-42e9-b7cd-7a6e9fe26d3a","title":"mega (M)","sourceUrl":"https://si-digital-framework.org/SI/prefixes/mega","version":1,"createdAt":"2026-10-05T02:09:48.000Z","updatedAt":"2026-10-05T02:09:48.000Z","text":"mega (symbol M) is the SI prefix for a factor of 10⁶ (scaling factor 1000000), per the BIPM SI Reference Point.\n\n- Name: mega\n- Symbol: M\n- Exponent: 6\n- Scaling factor: 1000000\n- Value datatype: xsd:integer\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM11-Res12"},{"id":"ffef5cf1-2107-40de-9520-117878f2b4b8","title":"kilo (k)","sourceUrl":"https://si-digital-framework.org/SI/prefixes/kilo","version":1,"createdAt":"2026-10-05T02:09:55.000Z","updatedAt":"2026-10-05T02:09:55.000Z","text":"kilo (symbol k) is the SI prefix for a factor of 10³ (scaling factor 1000), per the BIPM SI Reference Point.\n\n- Name: kilo\n- Symbol: k\n- Exponent: 3\n- Scaling factor: 1000\n- Value datatype: xsd:integer\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM11-Res12"},{"id":"da12c012-c99a-4fc9-a196-5203a6f2d776","title":"hecto (h)","sourceUrl":"https://si-digital-framework.org/SI/prefixes/hecto","version":1,"createdAt":"2026-10-05T02:10:02.000Z","updatedAt":"2026-10-05T02:10:03.000Z","text":"hecto (symbol h) is the SI prefix for a factor of 10² (scaling factor 100), per the BIPM SI Reference Point.\n\n- Name: hecto\n- Symbol: h\n- Exponent: 2\n- Scaling factor: 100\n- Value datatype: xsd:integer\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM11-Res12"},{"id":"718e3d56-ee8c-47f2-965f-12cfa074455e","title":"deca (da)","sourceUrl":"https://si-digital-framework.org/SI/prefixes/deca","version":1,"createdAt":"2026-10-05T02:10:09.000Z","updatedAt":"2026-10-05T02:10:09.000Z","text":"deca (symbol da) is the SI prefix for a factor of 10¹ (scaling factor 10), per the BIPM SI Reference Point.\n\n- Name: deca\n- Symbol: da\n- Exponent: 1\n- Scaling factor: 10\n- Value datatype: xsd:integer\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM11-Res12"},{"id":"46b08b8e-0810-43da-9bdc-f36ce9e72ce5","title":"deci (d)","sourceUrl":"https://si-digital-framework.org/SI/prefixes/deci","version":1,"createdAt":"2026-10-05T02:10:16.000Z","updatedAt":"2026-10-05T02:10:17.000Z","text":"deci (symbol d) is the SI prefix for a factor of 10⁻¹ (scaling factor 0.1), per the BIPM SI Reference Point.\n\n- Name: deci\n- Symbol: d\n- Exponent: -1\n- Scaling factor: 0.1\n- Value datatype: xsd:decimal\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM11-Res12"},{"id":"22c8f048-888f-413a-9de9-c35988ab0328","title":"centi (c)","sourceUrl":"https://si-digital-framework.org/SI/prefixes/centi","version":1,"createdAt":"2026-10-05T02:10:24.000Z","updatedAt":"2026-10-05T02:10:24.000Z","text":"centi (symbol c) is the SI prefix for a factor of 10⁻² (scaling factor 0.01), per the BIPM SI Reference Point.\n\n- Name: centi\n- Symbol: c\n- Exponent: -2\n- Scaling factor: 0.01\n- Value datatype: xsd:decimal\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM11-Res12"},{"id":"c1fe43a6-55ce-4377-9f75-baa2e43c7de6","title":"milli (m)","sourceUrl":"https://si-digital-framework.org/SI/prefixes/milli","version":1,"createdAt":"2026-10-05T02:10:30.000Z","updatedAt":"2026-10-05T02:10:31.000Z","text":"milli (symbol m) is the SI prefix for a factor of 10⁻³ (scaling factor 0.001), per the BIPM SI Reference Point.\n\n- Name: milli\n- Symbol: m\n- Exponent: -3\n- Scaling factor: 0.001\n- Value datatype: xsd:decimal\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM11-Res12"},{"id":"d355a899-6a9a-4663-a86c-72a056993908","title":"micro (μ)","sourceUrl":"https://si-digital-framework.org/SI/prefixes/micro","version":1,"createdAt":"2026-10-05T02:10:37.000Z","updatedAt":"2026-10-05T02:10:37.000Z","text":"micro (symbol μ) is the SI prefix for a factor of 10⁻⁶ (scaling factor 0.000001), per the BIPM SI Reference Point.\n\n- Name: micro\n- Symbol: μ\n- Exponent: -6\n- Scaling factor: 0.000001\n- Value datatype: xsd:decimal\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM11-Res12"},{"id":"c82a43b1-8c71-4e33-803f-8e8decdac726","title":"nano (n)","sourceUrl":"https://si-digital-framework.org/SI/prefixes/nano","version":1,"createdAt":"2026-10-05T02:10:44.000Z","updatedAt":"2026-10-05T02:10:44.000Z","text":"nano (symbol n) is the SI prefix for a factor of 10⁻⁹ (scaling factor 0.000000001), per the BIPM SI Reference Point.\n\n- Name: nano\n- Symbol: n\n- Exponent: -9\n- Scaling factor: 0.000000001\n- Value datatype: xsd:decimal\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM11-Res12"},{"id":"61f4871b-e77f-4db1-9edb-900ca2e74570","title":"pico (p)","sourceUrl":"https://si-digital-framework.org/SI/prefixes/pico","version":1,"createdAt":"2026-10-05T02:10:52.000Z","updatedAt":"2026-10-05T02:10:52.000Z","text":"pico (symbol p) is the SI prefix for a factor of 10⁻¹² (scaling factor 0.000000000001), per the BIPM SI Reference Point.\n\n- Name: pico\n- Symbol: p\n- Exponent: -12\n- Scaling factor: 0.000000000001\n- Value datatype: xsd:decimal\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM11-Res12"},{"id":"b66e0a46-93a7-447c-8ca6-c772b50e4af2","title":"femto (f)","sourceUrl":"https://si-digital-framework.org/SI/prefixes/femto","version":1,"createdAt":"2026-10-05T02:10:59.000Z","updatedAt":"2026-10-05T02:10:59.000Z","text":"femto (symbol f) is the SI prefix for a factor of 10⁻¹⁵ (scaling factor 0.000000000000001), per the BIPM SI Reference Point.\n\n- Name: femto\n- Symbol: f\n- Exponent: -15\n- Scaling factor: 0.000000000000001\n- Value datatype: xsd:decimal\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM12-Res8"},{"id":"fcafe08c-3392-40c1-ba80-43b965aa044c","title":"atto (a)","sourceUrl":"https://si-digital-framework.org/SI/prefixes/atto","version":1,"createdAt":"2026-10-05T02:11:05.000Z","updatedAt":"2026-10-05T02:11:06.000Z","text":"atto (symbol a) is the SI prefix for a factor of 10⁻¹⁸ (scaling factor 0.000000000000000001), per the BIPM SI Reference Point.\n\n- Name: atto\n- Symbol: a\n- Exponent: -18\n- Scaling factor: 0.000000000000000001\n- Value datatype: xsd:decimal\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM12-Res8"},{"id":"ec383614-dbc5-4d4e-a9a5-16f493a32e19","title":"zepto (z)","sourceUrl":"https://si-digital-framework.org/SI/prefixes/zepto","version":1,"createdAt":"2026-10-05T02:11:12.000Z","updatedAt":"2026-10-05T02:11:13.000Z","text":"zepto (symbol z) is the SI prefix for a factor of 10⁻²¹ (scaling factor 0.000000000000000000001), per the BIPM SI Reference Point.\n\n- Name: zepto\n- Symbol: z\n- Exponent: -21\n- Scaling factor: 0.000000000000000000001\n- Value datatype: xsd:decimal\n- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM19-Res4"}]}