Convert BTU to watts
1 BTU per hour equals 0.293071 watts. To convert BTUs per hour to watts, multiply the number of BTUs per hour by 0.293071: for example, 10 BTU/h is 2.93071 W. Ethical Tube's free BTU to watts converter does the math as you type, and the chart below lists common values.
1 BTU/h = 0.293071 W
- 1 BTU/h
- 0.293071 W
- 1 W
- 3.41214 BTU/h
- Formula
- W = BTU/h × 0.293071
- Measures
- Power
- Price
- Free
- Works offline
- Yes
Conversion chart
BTU to watts chart
| BTUs per hour (BTU/h) | Watts (W) |
|---|---|
| 1 BTU/h | 0.293071 W |
| 2 BTU/h | 0.586142 W |
| 3 BTU/h | 0.879213 W |
| 4 BTU/h | 1.17228 W |
| 5 BTU/h | 1.46536 W |
| 6 BTU/h | 1.75843 W |
| 8 BTU/h | 2.34457 W |
| 10 BTU/h | 2.93071 W |
| 12 BTU/h | 3.51685 W |
| 15 BTU/h | 4.39607 W |
| 20 BTU/h | 5.86142 W |
| 25 BTU/h | 7.32678 W |
| 50 BTU/h | 14.6536 W |
| 100 BTU/h | 29.3071 W |
How it works
How to convert BTU to watts
Know the formula
W = BTU/h × 0.293071. In words: multiply the number of BTUs per hour by 0.293071.
Work an example
10 BTU/h → 2.93071 W. Round to two or three decimal places for everyday use.
Or type it in
Enter any value in the converter above and the answer appears instantly, in both directions.
Good to know
About power units
- This converter uses mechanical horsepower (745.7 watts), common for engines in the US and UK. Metric horsepower (PS) is slightly smaller, 735.5 watts.
- Air conditioner ratings in BTU are BTU per hour. A 12,000 BTU unit (one ton of cooling) uses about 3.5 kW of cooling power.
FAQ
Questions, answered
How many watts are in a BTU per hour?
There are 0.293071 watts in 1 BTU per hour. To convert BTUs per hour to watts, multiply the number of BTUs per hour by 0.293071.
What is 10 BTU in watts?
10 BTUs per hour is 2.93071 watts.
How do you convert watts back to BTU?
Multiply the number of watts by 3.41214. 1 watt is 3.41214 BTUs per hour.
Is this BTU to watts converter free?
Yes. It's free and works in any browser, even offline once the page has loaded. The answer updates as you type, and nothing you enter is sent anywhere.
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