Watt-hour to Joule Converter

Type in either field — conversion updates instantly in both directions.

Formula: J = Wh × 3600
Quick conversion table
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How to convert Watt-hour to Joule

Watt-hours and Joules are energy units used in physics, nutrition, and electrical engineering. One Wh equals 3600 J. Use this converter for electricity bills, dietary calorie counts, and scientific calculations.

Formula: J = Wh × 3600
Reverse: Wh = J × 0.000278