watt-seconds (Ws) to joules Converter
Convert watt-seconds (Ws) to joules instantly with a reference table.
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How to convert watt-seconds (Ws) to joules
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.
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.
About watt-seconds (Ws) and joules
watt-seconds (Ws) and joules are both energy measurements.
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.
Frequently asked questions
How do I convert watt-seconds (Ws) to joules?
Use the calculator above to convert watt-seconds (Ws) to joules instantly.
How many joules are in 1 watt-seconds (Ws)?
Use the calculator above to find the exact conversion.
Is the watt-seconds (Ws) to joules converter free?
Yes, the watt-seconds (Ws) to joules converter is completely free with no sign-up required, no downloads, and it works offline once the page has loaded.