Energy converter

Work, heat and electricity in useful units.

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Energy converter

Instant conversion

Edit either value. Decimals and scientific notation supported.

From value

kWh

From unit

To value

To unit

CONVERSION

1 kWh ≈ 3600000 J

Display precision

Precision changes displayed rounding, not calculation accuracy.

FORMULAJ = kWh × 3600000

UNDERSTAND THE UNITS

Converting energy

Energy is the capacity to do work. A joule is one newton metre. A kilowatt-hour is energy delivered at one kilowatt for one hour, exactly 3.6 million joules.

How the calculation works

Multiply the source value by its base-unit factor, then divide by the destination factor. For example, 1 kWh ≈ 3600000 J.

Precision and rounding

Choose 6, 10 or 15 significant figures for the displayed result. Calculations use unrounded JavaScript numbers. The ≈ symbol indicates that displayed results may be rounded; significant figures are display precision, not measurement accuracy.

Quick reference

Fixed reference · Kilowatt-hour to Joule

This table uses the default pair, independently of your selections above.

Kilowatt-hour (kWh)	Joule (J)
0	0
1	3600000
5	18000000
10	36000000
25	90000000
50	180000000
100	360000000
1000	3600000000

Rounded to 10 significant figures.

PAIR DIRECTORY

All energy conversion pairs

From Joule (J)

From Kilojoule (kJ)

From Megajoule (MJ)

From Watt-hour (Wh)

From Kilowatt-hour (kWh)

From Thermochemical calorie (cal)

From Kilocalorie (food Calorie) (kcal)

From BTU (international table) (BTU (IT))

From Electronvolt (eV)

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