Kilowatt-hours to megajoules converter

Convert kilowatt-hours (kWh) to megajoules (MJ).

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Edit either value. Decimals and scientific notation supported.

From value

kWh

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To value

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CONVERSION

1 kWh ≈ 3.6 MJ

Display precision

Precision changes displayed rounding, not calculation accuracy.

FORMULAMJ = kWh × 3.6

FORMULA & EXAMPLES

How to convert Kilowatt-hours to megajoules

MJ = kWh × 3.6

Multiply the kWh reading by 3.6.

Worked examples

1 kWh ≈ 3.6 MJ

1 × 3.6 ≈ 3.6

10 kWh ≈ 36 MJ

10 × 3.6 ≈ 36

Frequently asked questions

Is a watt-hour the same quantity as a watt?

No. A watt-hour measures energy; a watt measures power. One watt-hour is the energy transferred at one watt for one hour, equal to 3,600 joules.

Kilowatt-hours to megajoules table

Fixed reference · Kilowatt-hour to Megajoule

Reference values use this page’s named pair and default context. Calculator precision and font settings do not change this table.

Kilowatt-hour (kWh)	Megajoule (MJ)
0	0
0.1	0.36
0.5	1.8
1	3.6
2	7.2
5	18
10	36
25	90
50	180
100	360
1000	3600

Table results use 10 significant figures; decimal formula coefficients use up to 15. Calculations use the unit definitions before rounding. Extra digits do not improve measurement accuracy.

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