Energy Converter

Convert between different energy units including Joules, Calories, BTU, kWh, and more.

From:

To:

Value:

Result:

J to kJ: divide by 1000

J to cal: divide by 4.184

kcal to J: multiply by 4184

Wh to J: multiply by 3600

kWh to J: multiply by 3,600,000

BTU to J: multiply by 1055.06

eV to J: multiply by 1.602 × 10⁻¹⁹

1 kWh: = 3.6 MJ = 860 kcal = 3412 BTU

Base Unit: Joules (J)

Energy = Power × Time. 1 Joule = 1 Watt-second = Work done by 1 Newton force over 1 meter.

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