Calorie Per Second (cal/s)
Exactly 4.184 watts.
1 calorie per second = 4.184 watts (exactly).
About the calorie per second
Pairing the small calorie with the second yields a unit that fits laboratory work, where heat flows are modest and timed in seconds. With the thermochemical calorie, defined as exactly 4.184 joules, one calorie per second is exactly 4.184 watts. NIST lists the thermochemical calorie per second at 4.184 watts as an exact factor, and the same list gives the kilocalorie per second as 4,184 watts.
The 15 degree calorie is a little different at about 4.1855 joules, and the International Table calorie of 1956 is 4.1868 joules, so a rate quoted in calories per second without a qualifier can differ by a few parts in ten thousand. The calorie itself is regarded as obsolete since the joule became the official SI unit of energy in 1948, and the watt, one joule per second, has replaced this rate in current work.
Sources: NIST SP 811, Appendix B.8; Wikipedia: Calorie
Calorie Per Second conversion chart
1 calorie per second expressed in every other power unit:
| Unit | 1 calorie per second |
|---|---|
| Watts | 4.184 |
| Kilowatts | 0.004184 |
| Horsepower | 0.005610836423 |
| Megawatts | 0.000004184 |
| Gigawatts | 4.184×10⁻⁹ |
| Metric Horsepower | 0.005688656847 |
| BTU Per Hour | 14.27640059 |
| Milliwatts | 4,184 |
| Electrical Horsepower | 0.005608579088 |
| Foot-pounds Per Second | 3.085960033 |
| Tons Of Refrigeration | 0.001189700049 |
| Kilocalories Per Hour | 3.6 |
| Ergs Per Second | 41,840,000 |
| Poncelets | 0.004266492635 |
More Scientific units
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