kWh to MJ Converter - Kilowatt-hour to Megajoule

Kilowatt-hour (kWh) to Megajoule (MJ)

Direct answer

1 kWh = 3.6 MJ

MJ = kWh × 3.6

Converter

Input

kWh

Result

3.6MJ

MJ = kWh × 3.6

kWh = MJ × 0.277777777778

Example: 10 kWh = 10 × 3.6 = 36 MJ.

Express both kWh and MJ in the same base unit J (joule), then cancel the shared base unit.

1
Rewrite kWh in the base unit
$1 kWh = 3, 600, 000 J$
2
Rewrite MJ in the base unit
$1 MJ = 1, 000, 000 J$
3
Forward conversion
$1 kWh = \frac{3 , 600 , 000 J}{1 , 000 , 000 J} \times 1 MJ = \frac{3 , 600 , 000}{1 , 000 , 000} MJ = 3.6 MJ$
4
Reverse conversion
$1 MJ = \frac{1 , 000 , 000 J}{3 , 600 , 000 J} \times 1 kWh = \frac{1 , 000 , 000}{3 , 600 , 000} kWh = 0.277777777778 kWh$

A guarded explanation for this pair page covering definition, principle, assumptions, and cautions.

Guarded output

AI text is for interpretation only. The page calculator remains the source of truth for numeric results.

1 kWh = 3.6 MJ.

10 kWh = 36 MJ.

100 kWh = 360 MJ.

Use MJ = kWh × 3.6.

1 MJ = 0.277777777778 kWh.

Use the conversion factor and round the result to the precision required by your calculation.