Kilojoules to Watt-hours Converter

Convert kilojoules (kJ) to watt-hours (Wh), with the formula, a conversion table and exact factors.

Change the values and press Calculate to work out your own figures.

Enter an amount of energy, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.

Value

A number, fraction (3/8), mixed number (1 1/2), scientific notation (2.5e6) or a simple sum such as 2*3.

The unit you want the answer in. Swap exchanges the two units.

Result

Result: 0.277777777778 Wh
joules (watt-seconds): 1,000 J
megajoules: 0.001 MJ
gigajoules: 1 × 10⁻⁶ GJ
calories (thermochemical): 239.005736138 cal
kilocalories (food Calories): 0.239005736138 kcal
megacalories: 0.000239005736138 Mcal
kilowatt-hours: 0.000277777777778 kWh
megawatt-hours: 2.77777777778 × 10⁻⁷ MWh
British thermal units (IT): 0.947817120313 Btu
million Btu: 9.47817120313 × 10⁻⁷ MMBtu
therms (100,000 Btu): 9.47817120313 × 10⁻⁶ thm
quads (10¹⁵ Btu): 9.47817120313 × 10⁻¹⁶ quad
electronvolts: 6.24150907446 × 10²¹ eV
kiloelectronvolts: 6.24150907446 × 10¹⁸ keV
megaelectronvolts: 6.24150907446 × 10¹⁵ MeV

1 kJ = 0.277777777778 Wh

Show the working

1 kJ = 0.277777777778 Wh
1 × 0.277777777778 = 0.277777777778 Wh

How to convert kilojoules to watt-hours

1 kJ = 0.277777777778 Wh, so multiply by 0.277777777778 to go from kilojoules to watt-hours. Going the other way, 1 Wh = 3.6 kJ.

Wh = kJ × 0.277777777778
kJ = Wh × 3.6

Worked example:

1 kJ = 0.277777777778 Wh
5 × 0.277777777778 = 1.38888888889 Wh

Kilojoules to watt-hours table

Kilojoules	Watt-hours
1 kJ	0.277777777778 Wh
2 kJ	0.555555555556 Wh
3 kJ	0.833333333333 Wh
4 kJ	1.11111111111 Wh
5 kJ	1.38888888889 Wh
6 kJ	1.66666666667 Wh
7 kJ	1.94444444444 Wh
8 kJ	2.22222222222 Wh
9 kJ	2.5 Wh
10 kJ	2.77777777778 Wh
15 kJ	4.16666666667 Wh
20 kJ	5.55555555556 Wh
25 kJ	6.94444444444 Wh
30 kJ	8.33333333333 Wh
40 kJ	11.1111111111 Wh
50 kJ	13.8888888889 Wh
75 kJ	20.8333333333 Wh
100 kJ	27.7777777778 Wh
250 kJ	69.4444444444 Wh
500 kJ	138.888888889 Wh
1000 kJ	277.777777778 Wh

About the units

Kilojoules (kJ): Kilojoules, a metric unit. Definition: BIPM SI Brochure, 9th edition (SI units, prefixes and units accepted for use with the SI).
Watt-hours (Wh): Watt-hours, a metric unit. Definition: BIPM SI Brochure, 9th edition (SI units, prefixes and units accepted for use with the SI).

Formula version 0.1.0Reviewed

Kilojoules to Watt-hours Converter

How to convert kilojoules to watt-hours

Kilojoules to watt-hours table

About the units

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