Power and Energy
cal/stokW
Convert calories per second (cal/s) to kilowatts (kW).
Factor1 cal/s = 0.004184 kW
Converter
cal/s
Accepts numbers or expressions, e.g. 150 + 14.7
Result
kW
Rendered to 6 significant figures.
Formula
Formula
kW = cal/s × 0.004184
Multiply any value in calories per second by 0.004184 to obtain the value in kilowatts.
Worked example
Convert 1000 cal/s to kW.
- 01Start with 1000 cal/s.
- 02Multiply by the conversion factor: 1000 × 0.004184 = 4.184 kW.
Result1000 cal/s = 4.184 kW
Conversion table
| cal/s | kW |
|---|---|
| 1 | 0.004184 |
| 2 | 0.008368 |
| 5 | 0.02092 |
| 10 | 0.04184 |
| 20 | 0.08368 |
| 50 | 0.2092 |
| 100 | 0.4184 |
| 200 | 0.8368 |
| 500 | 2.092 |
| 1000 | 4.184 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from cal/s to kW?
1 cal/s equals 0.004184 kW. To convert, multiply the value in calories per second by 0.004184.
How do I convert 1 cal/s to kW?
1 cal/s = 0.004184 kW. For any value, multiply by 0.004184.
How do I convert kW back to cal/s?
Divide by the same factor — or equivalently, multiply by 239.0057. So 1 kW = 239.006 cal/s.
When would I need to convert calorie per second to kilowatt?
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).