How to convert watts to BTU per Hour
To convert watts to BTU per Hour, multiply the value by the conversion factor 3.412141633. To go the other way, multiply by 0.2930710702 (or divide by 3.412141633).
Worked example: 25 W to BTU/h
- Write the value: 25 W
- Multiply by 3.412141633: 25 × 3.412141633
- Result: 85.3035 BTU/h
Watt to BTU per Hour conversion table
Quick reference values, rounded to 6 significant digits.
| Watt (W) | BTU per Hour (BTU/h) |
|---|---|
| 0.1 W | 0.341214 BTU/h |
| 0.25 W | 0.853035 BTU/h |
| 0.5 W | 1.70607 BTU/h |
| 1 W | 3.41214 BTU/h |
| 2 W | 6.82428 BTU/h |
| 3 W | 10.2364 BTU/h |
| 4 W | 13.6486 BTU/h |
| 5 W | 17.0607 BTU/h |
| 6 W | 20.4728 BTU/h |
| 7 W | 23.885 BTU/h |
| 8 W | 27.2971 BTU/h |
| 9 W | 30.7093 BTU/h |
| 10 W | 34.1214 BTU/h |
| 12 W | 40.9457 BTU/h |
| 15 W | 51.1821 BTU/h |
| 20 W | 68.2428 BTU/h |
| 25 W | 85.3035 BTU/h |
| 30 W | 102.364 BTU/h |
| 40 W | 136.486 BTU/h |
| 50 W | 170.607 BTU/h |
| 75 W | 255.911 BTU/h |
| 100 W | 341.214 BTU/h |
| 250 W | 853.035 BTU/h |
| 500 W | 1,706.07 BTU/h |
| 1,000 W | 3,412.14 BTU/h |
BTU per Hour to Watt
| BTU/h | W |
|---|---|
| 1 BTU/h | 0.293071 W |
| 5 BTU/h | 1.46536 W |
| 10 BTU/h | 2.93071 W |
| 50 BTU/h | 14.6536 W |
| 100 BTU/h | 29.3071 W |
1 Watt in other power units
About Watt and BTU per Hour
What is a watt (W)?
The watt is the SI unit of power, one joule per second.
What is a btu per hour (BTU/h)?
BTU per hour measures heating and cooling capacity of air conditioners.
Air-conditioner tip: a 1-ton AC provides 12,000 BTU/h of cooling. A rough rule for Bangladesh is 1 ton per 100–120 sq ft of room area, more for top floors and west-facing rooms.
Where watt to btu per hour conversion is used
Power conversions are needed for choosing air conditioners, generators, IPS/UPS, motors and solar panels. Converting between watts and BTU per Hour is especially common when you compare products, read foreign specifications, or fill in forms that expect a specific unit.
Need every unit at once? Use the full Power Converter.
Frequently asked questions
How many BTU per Hour are in 1 watt?
1 Watt equals 3.41214 BTU/h.
How do I convert watts to BTU per Hour?
Multiply the number of watts by 3.412141633. For example, 25 W × 3.412141633 = 85.3035 BTU/h.
What is 25 W in BTU/h?
25 W = 85.3035 BTU/h.
How many watts are in 1 btu per hour?
1 BTU per Hour equals 0.293071 W. Use the Btu Hr to Watts converter for the reverse direction.
Is this Watt to BTU per Hour converter accurate?
Yes. It uses exact internationally defined conversion factors, calculated with full floating-point precision. Results are displayed rounded for readability.