Btus Per Hour to Watts
BTU per hour measures heating and cooling power, the standard rating unit for air conditioners and furnaces in the US. The watt is the SI unit of power, equal to one joule per second, used to rate everything from light bulbs to engines. 1 BTU/h equals ≈0.293071 W, so converting between them is a matter of multiplying by that fixed factor — type any value into the converter below and both sides update instantly as you type.
Both units belong to power, measured here against power's base unit (W) — every other power unit on this site converts through that same reference point, which is why the table below can also be read as a quick cross-check against nearby values.
Formula
W = BTU/h × ≈0.293071
BTU/h = W × ≈3.41214
Worked example: 5 BTU/h × ≈0.293071 = ≈1.46536 W.
Conversion table
| BTU per hour (BTU/h) | Watt (W) |
|---|---|
| 1 BTU/h | ≈0.293071 W |
| 2 BTU/h | ≈0.586142 W |
| 3 BTU/h | ≈0.879213 W |
| 5 BTU/h | ≈1.46536 W |
| 10 BTU/h | ≈2.93071 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 |
| 250 BTU/h | ≈73.2678 W |
| 500 BTU/h | ≈146.536 W |
| 1,000 BTU/h | ≈293.071 W |
Frequently asked
- How many Watts in a btu per hour?
- 1 BTU/h equals ≈0.293071 W.
- How do I convert BTUs per hour to Watts?
- Multiply the value in BTU/h by ≈0.293071 to get W. The converter above does this instantly as you type.
- Is the conversion exact?
- Yes — BTU per hour and Watt are both defined by a fixed conversion factor to power's base unit (W), so the result shown is exact to the precision displayed, not an approximation.