Watt-hours to joules Converter

Enter the watt-hours, then press Calculate. The joules stay hidden while you type.

Press Calculate after the entries are in.

What this energy conversion is for

Use this page when a measurement is written in watt-hours and the next step needs joules. The number stays blank until you press Calculate, so a half-typed entry is never mistaken for the answer.

The factor

Multiply by the factor: 1 watt-hour = 3,600 joules.

A worked example

10 watt-hours are 36,000 joules. Multiply the result by the reverse factor if you want the original number back.

How to check it

Write the factor down, do the multiply on paper, and compare it with the result card. If you change a sentence on this page, edit the HTML file and reload. The form and this note live in the same file.

The reverse conversion is joules to watt-hours. A nearby pair in the same units is kilojoules to joules. When the converted number is the input to a job, continue with the what the power costs.