Free Online Energy Unit Converter

Convert between different energy units instantly with our comprehensive energy converter. Support for joules, calories, kilowatt-hours, electron volts, British thermal units, and many more energy measurements. Essential for physics, engineering, and energy-related calculations.

?? Perfect For:

?? Physics calculations
? Engineering projects
??? Thermodynamics
?? Electrical engineering
?? Academic studies
?? Industrial applications

From:

To:

Value:

Result:

Daily Human Energy

2,000 kcal

� 8,372 kJ

1 kWh

3,600,000 J

� 860 kcal

1 Calorie

4.184 J

� 0.00116 Wh

1 eV

1.602�10?�? J

Very small unit

1 BTU

1,055.06 J

� 252 cal

1 ft�lb

1.356 J

� 0.324 cal

SI Units:

Joule (J): SI unit of energy
Kilojoule (kJ): 1,000 joules
Watt-hour (Wh): Energy over time
Kilowatt-hour (kWh): 1,000 watt-hours

Other Units:

Calorie (cal): Heat energy
Electron Volt (eV): Atomic scale
BTU: British thermal unit
Foot-pound: Mechanical work

Energy Converter - Free Online Energy Measurement Tool