Skip to content

joule

J exact

SI base unit of energy for this engine.

Definition

Dimension
Energy
Symbols
J
System
SI
Base factor
×1
Exactness
exact

Follows from an SI or definitional identity — no material assumption.

Also known as

jouleswatt secondwatt secondsWs

Sources

Common conversions

for 1 J
kilojoule0.001kJ exact
megajoule0.000001MJ exact
gigajoule0.000000001GJ exact
kilowatt hour0.000000277778kWh exact
megawatt hour0.000000000277778MWh exact
British thermal unit0.000947817BTU standard definition
million British thermal units0.000000000947817MMBTU standard definition
therm (US)0.00000000947817therm standard definition
tonne of oil equivalent0.0000000000238846toe standard definition

Learn more

Universal Converter

A transparent converter for units, energy, fuels and emissions. Every non-exact result is traceable to its source.

© 2026 Universal Converter · v0.1 — an explanatory reference tool, not a compliance calculator. Sources over invented numbers · exact vs. estimate kept distinct.