Joules to Watt-Hours Converter

Instantly convert Joules to Watt-Hours with the calculator below. Enter any value and get an accurate result immediately.

Joules

Watt-Hours

0.0002777777778

Quick presets:

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How to convert Joules to Watt-Hours

Wh = J × 0.000278

Step-by-step example

Joules to Kilojoules

J → kJ

Joules to Calories

J → cal

Joules to Kilocalories

J → kcal

Joules to Kilowatt-Hours

J → kWh

Joules to British Thermal Units

J → BTU

Joules to Electron Volts

J → eV

1 J = 0.00027777778 Wh. Use the converter above for any value.

To convert Joules to Watt-Hours, use the formula: Wh = J × 0.000278. Enter your value in the input above and the result is shown instantly.

The conversion formula is: Wh = J × 0.000278. This gives the exact Watt-Hours equivalent for any Joules value.

Yes, this converter is completely free to use. No signup, no download, and no limits. It works directly in your browser.