Power and Energy
cal/stokcal/hr
Convert calories per second (cal/s) to kilocalories per hour (kcal/hr).
Factor1 cal/s = 3.597592 kcal/hr
Converter
cal/s
Accepts numbers or expressions, e.g. 150 + 14.7
Result
kcal/hr
Rendered to 6 significant figures.
Formula
Formula
kcal/hr = cal/s × 3.597592
Multiply any value in calories per second by 3.597592 to obtain the value in kilocalories per hour.
Worked example
Convert 1 cal/s to kcal/hr.
- 01Start with 1 cal/s.
- 02Multiply by the conversion factor: 1 × 3.597592 = 3.59759 kcal/hr.
Result1 cal/s = 3.59759 kcal/hr
Conversion table
| cal/s | kcal/hr |
|---|---|
| 1 | 3.5976 |
| 2 | 7.1952 |
| 5 | 17.988 |
| 10 | 35.976 |
| 20 | 71.952 |
| 50 | 179.88 |
| 100 | 359.76 |
| 200 | 719.52 |
| 500 | 1798.8 |
| 1000 | 3597.6 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from cal/s to kcal/hr?
1 cal/s equals 3.597592 kcal/hr. To convert, multiply the value in calories per second by 3.597592.
How do I convert 1 cal/s to kcal/hr?
1 cal/s = 3.59759 kcal/hr. For any value, multiply by 3.597592.
How do I convert kcal/hr back to cal/s?
Divide by the same factor — or equivalently, multiply by 0.2779637. So 1 kcal/hr = 0.277964 cal/s.
When would I need to convert calorie per second to kilocalorie per hour?
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).