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Fast, flexible, scientist and engineer-friendly unit conversions.

Convert Between Units of Energy

Energy unit conversions are common in mechanical, thermal, and electrical engineering.

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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.

Fun Fact

Huka Falls in New Zealand can blast around 220 cubic metres of water every second - that is about an Olympic pool full of water in ten seconds. Nature's pressure washer on insane mode.

How many microcubic meters/second is 220 cubicmeterspersecond?

Source

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)