Watts to BTU per hour Converter
Convert watts (W) to btu per hour (BTU/h) instantly. Power conversions help compare car engines in hp and kW, and air-con units rated in BTU/h against their electrical draw in watts.
Result
- BTU per hour
- 3.4121 BTU/h
How to use the watts to btu per hour converter
- Enter the watts (W).
- The results update as you type, or press Calculate.
- Read the btu per hour first, then the supporting figures below it.
Formula
BTU per hour = watts × 3.4121416351
Worked example
For example, with these inputs:
- Watts (W): 1
the calculator returns:
- BTU per hour: 3.4121 BTU/h
Watts to BTU per hour table
| Watts | BTU per hour |
|---|---|
| 1 W | 3.4121 BTU/h |
| 2 W | 6.8243 BTU/h |
| 5 W | 17.0607 BTU/h |
| 10 W | 34.1214 BTU/h |
| 20 W | 68.2428 BTU/h |
| 25 W | 85.3035 BTU/h |
| 50 W | 170.6071 BTU/h |
| 100 W | 341.2142 BTU/h |
| 250 W | 853.0354 BTU/h |
| 500 W | 1,706.07 BTU/h |
| 1,000 W | 3,412.14 BTU/h |
About this conversion
Power conversions help compare car engines in hp and kW, and air-con units rated in BTU/h against their electrical draw in watts.
For everyday use, three or four significant figures are usually enough. Engineering, science and trade documents may need more, and rounding should happen only at the end of a calculation.
Many conversion factors are exact by definition. The inch has been defined as exactly 2.54 centimetres since 1959, and the pound as exactly 0.45359237 kilograms, so conversions involving them can be as precise as you need.
Frequently asked questions
How many btu per hour are in one watt?
1 W = 3.4121 BTU/h.
How do I convert W to BTU/h?
BTU per hour = watts × 3.4121416351.