BTUs per Hour to Watts (BTU/h to W) Converter
1 BTU per hour (BTU/h) = 0.293071 watts (W). To convert BTUs per hour to watts, multiply by 0.293071: 12000 BTU/h × 0.293071 = 3,516.85 W.
Quick facts
- 1 BTU/h = 0.293071 W
- 1 W = 3.41214 BTU/h
- Formula: W = BTU/h × 0.293071
- Quick estimate: multiply by about 0.29
How to convert BTUs per hour to watts
- Take the value in BTUs per hour.
- Multiply it by 0.293071 (the number of watts in one BTU per hour).
- Round the result to the precision you need.
Worked example (a one-ton air conditioner): 12000 BTU/h × 0.293071 = 3516.85 W.
To convert watts back to BTUs per hour, multiply by 3.41214, or divide by 0.293071.
Source: NIST SP 811 (2008), Appendix B (mechanical horsepower and international-table BTU).
BTUs per Hour to Watts conversion table
| BTUs per Hour [BTU/h] | Watts [W] |
|---|---|
| 0.01 BTU/h | 0.0029307107 W |
| 0.1 BTU/h | 0.029307107 W |
| 1 BTU/h | 0.2930710702 W |
| 2 BTU/h | 0.5861421404 W |
| 3 BTU/h | 0.8792132106 W |
| 5 BTU/h | 1.465355351 W |
| 10 BTU/h | 2.930710702 W |
| 20 BTU/h | 5.861421404 W |
| 50 BTU/h | 14.65355351 W |
| 100 BTU/h | 29.30710702 W |
| 1000 BTU/h | 293.0710702 W |
BTU/h to W chart from 1 to 100
- 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
- 7 BTU/h 2.0515 W
- 8 BTU/h 2.34457 W
- 9 BTU/h 2.63764 W
- 10 BTU/h 2.93071 W
- 11 BTU/h 3.22378 W
- 12 BTU/h 3.51685 W
- 13 BTU/h 3.80992 W
- 14 BTU/h 4.10299 W
- 15 BTU/h 4.39607 W
- 16 BTU/h 4.68914 W
- 17 BTU/h 4.98221 W
- 18 BTU/h 5.27528 W
- 19 BTU/h 5.56835 W
- 20 BTU/h 5.86142 W
- 25 BTU/h 7.32678 W
- 30 BTU/h 8.79213 W
- 35 BTU/h 10.2575 W
- 40 BTU/h 11.7228 W
- 45 BTU/h 13.1882 W
- 50 BTU/h 14.6536 W
- 55 BTU/h 16.1189 W
- 60 BTU/h 17.5843 W
- 65 BTU/h 19.0496 W
- 70 BTU/h 20.515 W
- 75 BTU/h 21.9803 W
- 80 BTU/h 23.4457 W
- 85 BTU/h 24.911 W
- 90 BTU/h 26.3764 W
- 95 BTU/h 27.8418 W
- 100 BTU/h 29.3071 W
Watts to BTUs per Hour conversion table
| Watts [W] | BTUs per Hour [BTU/h] |
|---|---|
| 0.01 W | 0.0341214163 BTU/h |
| 0.1 W | 0.3412141633 BTU/h |
| 1 W | 3.4121416328 BTU/h |
| 2 W | 6.8242832656 BTU/h |
| 3 W | 10.2364248984 BTU/h |
| 5 W | 17.060708164 BTU/h |
| 10 W | 34.121416328 BTU/h |
| 20 W | 68.2428326561 BTU/h |
| 50 W | 170.6070816402 BTU/h |
| 100 W | 341.2141632805 BTU/h |
| 1000 W | 3412.1416328045 BTU/h |
BTUs per Hour vs Watts
| BTU per Hour | Watt | |
|---|---|---|
| Symbol | BTU/h | W |
| Equals | 1 BTU/h = 0.293071 W | 1 W = 3.41214 BTU/h |
What is a BTU per hour?
The rate of one British thermal unit of heat transfer per hour. Used in the US for air conditioner and heater ratings.
What is a watt?
The SI derived unit of power, equal to one joule per second. Used for electrical appliance and device power ratings.
Frequently asked questions
How many watts are in a BTU per hour?
There are 0.293071 watts in 1 BTU per hour (1 BTU/h = 0.2930710702 W).
How many BTUs per hour are in a watt?
There are 3.41214 BTUs per hour in 1 watt (1 W = 3.4121416328 BTU/h).
How do I convert BTUs per hour to watts?
Multiply the number of BTUs per hour by 0.293071. For example, 10 BTU/h × 0.293071 = 2.93071 W. To convert back, multiply by 3.41214.
What is 10 BTU/h in watts?
10 BTU/h = 2.93071 W.
What is 100 BTU/h in watts?
100 BTU/h = 29.3071 W.
Is the conversion exact?
Yes. The factor comes from the official definitions of both units (NIST SP 811 (2008), Appendix B (mechanical horsepower and international-table BTU)). Results are shown to up to 10 decimal places; round them to suit your purpose.
Related conversions
Popular power conversions
- Horsepower to Kilowatts
- Kilowatts to Horsepower
- Horsepower to Watts
- Watts to Horsepower
- BTUs per Hour to Kilowatts
- Kilowatts to BTUs per Hour
- Megawatts to Kilowatts
- Kilowatts to Watts
Convert BTUs per hour to other units
Convert other units to watts
Open the full power converter with every unit →