J to Wh Converter - Joule to Watt-hour

Joule (J) to Watt-hour (Wh)

Direct answer

1 J = 0.000277777778 Wh

Wh = J × 0.000277777778

Converter

Input

Result

0.000277777778Wh

Wh = J × 0.000277777778

J = Wh × 3,600

Example: 10 J = 10 × 0.000277777778 = 0.002777777778 Wh.

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

1
Rewrite J in the base unit
$1 J = 1 J$
2
Rewrite Wh in the base unit
$1 Wh = 3, 600 J$
3
Forward conversion
$1 J = \frac{1 J}{3 , 600 J} \times 1 Wh = \frac{1}{3 , 600} Wh = 0.000277777778 Wh$
4
Reverse conversion
$1 Wh = \frac{3 , 600 J}{1 J} \times 1 J = \frac{3 , 600}{1} J = 3, 600 J$

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 J = 0.000277777778 Wh.

10 J = 0.002777777778 Wh.

100 J = 0.027777777778 Wh.

Use Wh = J × 0.000277777778.

1 Wh = 3,600 J.

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