kJ to Wh Converter - Kilojoule to Watt-hour

Kilojoule (kJ) to Watt-hour (Wh)

Direct answer

1 kJ = 0.277777777778 Wh

Wh = kJ × 0.277777777778

Converter

Input

Result

0.277777777778Wh

Wh = kJ × 0.277777777778

kJ = Wh × 3.6

Example: 10 kJ = 10 × 0.277777777778 = 2.77777777778 Wh.

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

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

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 kJ = 0.277777777778 Wh.

10 kJ = 2.77777777778 Wh.

100 kJ = 27.7777777778 Wh.

Use Wh = kJ × 0.277777777778.

1 Wh = 3.6 kJ.

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