⚡ Energy
watt-seconds (Ws) to joules Converter
Convert watt-seconds (Ws) to joules instantly with a reference table.
watt-seconds (Ws) to joules
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Common conversions
| watt-seconds (Ws) | joules |
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Formula:
How to convert watt-seconds (Ws) to joules
1
Enter your value
Type the number of watt-seconds (ws) you want to convert into the left box. The result in joules 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 to watt-seconds (Ws). Your current value carries across so you don't have to re-enter anything.
3
About watt-seconds (Ws) and joules
watt-seconds (Ws) and joules are both energy measurements.
💡 Did you know?
1 J = 1 W·s. A bolt of lightning: ~1 billion J = 1 GJ, released in about 0.2 seconds = ~5 billion W average. A camera flash: ~0.001 J. A charged capacitor in a defibrillator: 200-360 J delivered to restart the heart.
Reviewed for 2026. watt-seconds (Ws) ↔ joules 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.