/convert/watts-to-joules-per-sec/ Convert watts to joules per second instantly with a reference conversion table. article watts to joules per second Converter — 247QuickTools
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watts to joules per second Converter

Convert watts to joules per second instantly with a reference conversion table.

watts to joules per second
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Common conversions
watts joules per second
Formula:

How to convert watts to joules per second

1

Enter your value

Type the number of watts you want to convert into the left box. The result in joules per second appears instantly in the right box. You can also type into the right box to convert in the other direction.

2

Use the swap button

Click the ⇄ Swap button to reverse the conversion — joules per second to watts. Your current value carries across so you don't have to re-enter anything.

3

About watts and joules per second

watts and joules per second are common power measurements.

Reviewed for 2026. watts ↔ joules per second conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.

Frequently asked questions

How do I convert watts to joules per second?

Use the calculator above to convert watts to joules per second instantly.

How many joules per second are in 1 watts?

Use the calculator above to find the exact conversion.

Is the watts to joules per second converter free?

Yes, the watts to joules per second converter is completely free with no sign-up required, no downloads, and it works offline once the page has loaded.