Direct conversion
Convert calorie per second [cal/s] to watt [W] instantly with formula, examples, chart, and FAQs.
Quick answer
Use the calculator below for any custom value, then check the formula, examples, chart, and reverse conversion links.
1 calorie per second [cal/s] = 4.184 watt [W]
1 calorie per second [cal/s] = 4.184 watt [W]
Example: 1 calorie per second [cal/s] equals 4.184 watt [W].
Power conversions use watt as the reference unit and include mechanical horsepower, electrical power, and heat-rate units.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-05-21.
The calorie per second (cal/s) is a power unit used to express measurements in this converter.
HistoryThis unit is included because it appears in practical measurement systems, technical references, product specifications, or everyday conversion needs.
Current useUse calorie per second when comparing power values, checking specifications, converting between systems, or preparing quick estimates.
The watt is the SI derived unit of power equal to one joule per second.
HistoryThe watt is named after James Watt and became the standard unit for power output and consumption.
Current useWatts are used for appliances, electronics, lighting, motors, solar panels, and power ratings.
| calorie per second [cal/s] | watt [W] |
|---|---|
| 1 | 4.184 |
| 2 | 8.368 |
| 5 | 20.92 |
| 10 | 41.84 |
| 20 | 83.68 |
| 25 | 104.6 |
| 50 | 209.2 |
| 100 | 418.4 |
| 1000 | 4184 |
Use this formula: 1 calorie per second [cal/s] = 4.184 watt [W] Enter your value in the calculator and the result updates instantly.
1 calorie per second [cal/s] equals 4.184 watt [W].
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.