Power and Energy
WtoJ/s
Convert watts (W) to joules per second (J/s).
Factor1 W = 1 J/s
Converter
W
Accepts numbers or expressions, e.g. 150 + 14.7
Result
J/s
Rendered to 6 significant figures.
Formula
Formula
J/s = W × 1
Multiply any value in watts by 1 to obtain the value in joules per second.
Worked example
Convert 1000 W to J/s.
- 01Start with 1000 W.
- 02Multiply by the conversion factor: 1000 × 1 = 1000 J/s.
Result1000 W = 1000 J/s
Conversion table
| W | J/s |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 5 | 5 |
| 10 | 10 |
| 20 | 20 |
| 50 | 50 |
| 100 | 100 |
| 200 | 200 |
| 500 | 500 |
| 1000 | 1000 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from W to J/s?
1 W equals 1 J/s. To convert, multiply the value in watts by 1.
How do I convert 1 W to J/s?
1 W = 1 J/s. For any value, multiply by 1.
How do I convert J/s back to W?
Divide by the same factor — or equivalently, multiply by 1. So 1 J/s = 1 W.
When would I need to convert watt to joule per second?
Power conversions are common when comparing motor ratings (often kW or hp), thermal duty (BTU/hr or kW), and utility consumption in mixed-unit projects.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).