Energy conversion

The following utility will enable you to convert energy expressed in one unit to another unit

For very small numbers or to improve rounding you can use this to control the number of decimal places displayed
Convert
to
Energy is generally expressed in joules (J).
The information in the table below provides a method of converting energy from other units to joules.
Scheme multiply by
British thermal unit (Btu) 1 055.056
calorie (mean)(cal) 4.190 02
electronvolt (eV) 0.000 000 000 000 000 000 160 217 7
erg (erg) 0.000 000 1
foot poundal 0.042 140 11
foot pound-force(ft - lbf) 1.355 818
kilocalorie (mean)(kcal) 4 190.02
kilowatt hour(kW h) 3 600 000
quad 1 055 056 000 000 000 000
therm(EC) 105 506 000
therm (U.S.) 105 480 400
ton of TNT (equilvalent energy) 4 184 000 000
watt hour (W h) 3 600
watt second 1
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