Convert Between Units of Energy
Energy unit conversions are common in mechanical, thermal, and electrical engineering.
About Energy Conversions
Helpful context and notes for converting Energy units.
Energy unit conversions are common in mechanical, thermal, and electrical engineering.
Energy values may be reported in joules, BTU, kilowatt-hours, or other application-specific units.
Energy conversions often tie into power and time assumptions. Verify all related units when performing calculations or reporting results.
Frequently Asked Questions
Energy unit conversions are exact based on standard definitions such as joules, BTU, and kilowatt-hours.
These conversions are suitable for reference and preliminary calculations. Verify results in final analyses.
Energy represents total work or heat, while power represents the rate at which energy is used.
Different industries prefer units suited to scale and application, such as BTU in HVAC and joules in physics.
No. Energy and power describe different physical quantities and must not be confused.
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Supported Units
Common and engineering-specific units supported for this conversion.
- BTU (British Thermal Units)
- cal (Calories)
- cJ (centijoules)
- daJ (decajoules)
- dJ (decijoules)
- eV (Electron Volts)
- erg (Ergs)
- ft-lb (Foot Pound-forces)
- GJ (gigajoules)
- hJ (hectojoules)
- HPh (Horse Power Hours)
- J (joules)
- Cal (Kilo-calories)
- kJ (kilojoules)
- MJ (megajoules)
- μJ (microjoules)
- mJ (millijoules)
- nJ (nanojoules)
- pJ (picojoules)
- TJ (terajoules)
- thm (Therms)
- Wh (Watt-hours)
Unit Categories
Explore the types of units you can convert on this site.