Glossary of energy units

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This glossary includes energy, volume and mass units commonly used in the energy sector.

Energy units

Btu

British Thermal Unit

cal

calorie

J

joule

tce

tonne of coal equivalent

toe

tonne of oil equivalent

Wh

watt hour

Mass units

g

gramme

lb

pound

lt

long ton

t

tonne

st

short ton

Volume units

bbl

barrel

ft3

cubic foot

gal. US

US gallon

gal. UK

UK gallon


l

litre

m3

cubic meter