The joule (symbol J) is a named SI derived unit of energy, per the BIPM SI Reference Point.
- Name: joule
- Symbol: J
- Unit type: Named SI derived unit
- Quantity kind: energy
- Expressed in base SI units: kg m² s⁻²
- Expressed in other SI units: N m
- Defining resolution: https://si-digital-framework.org/bodies/CGPM#CGPM11-Res12
- SI prefix restriction: false