⚡ Power
watts to joules per second Converter
Convert watts to joules per second instantly with a reference conversion table.
watts to joules per second
→
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.