Wh to kJ Converter - Watt-hour to Kilojoule

Watt-hour (Wh) to Kilojoule (kJ)

Direct answer

1 Wh = 3.6 kJ

kJ = Wh × 3.6

Converter

Input

Result

3.6kJ

kJ = Wh × 3.6

Wh = kJ × 0.277777777778

Example: 10 Wh = 10 × 3.6 = 36 kJ.

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

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

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 Wh = 3.6 kJ.

10 Wh = 36 kJ.

100 Wh = 360 kJ.

Use kJ = Wh × 3.6.

1 kJ = 0.277777777778 Wh.

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