Power and Energy
kWtoJ/s
Convert kilowatts (kW) to joules per second (J/s).
Factor1 kW = 1000 J/s
Converter
kW
Accepts numbers or expressions, e.g. 150 + 14.7
Result
J/s
Rendered to 6 significant figures.
Formula
Formula
J/s = kW × 1000
Multiply any value in kilowatts by 1000 to obtain the value in joules per second.
Worked example
Convert 10 kW to J/s.
- 01Start with 10 kW.
- 02Multiply by the conversion factor: 10 × 1000 = 10000 J/s.
Result10 kW = 10000 J/s
Conversion table
| kW | J/s |
|---|---|
| 1 | 1000 |
| 2 | 2000 |
| 5 | 5000 |
| 10 | 10000 |
| 20 | 20000 |
| 50 | 50000 |
| 100 | 1.0000e+5 |
| 200 | 2.0000e+5 |
| 500 | 5.0000e+5 |
| 1000 | 1.0000e+6 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from kW to J/s?
1 kW equals 1000 J/s. To convert, multiply the value in kilowatts by 1000.
How do I convert 1 kW to J/s?
1 kW = 1000 J/s. For any value, multiply by 1000.
How do I convert J/s back to kW?
Divide by the same factor — or equivalently, multiply by 0.001. So 1 J/s = 0.001 kW.
When would I need to convert kilowatt 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).