Power rate using BTU per hour.
BTU per hour to Watts Converter — BTU/h to W
Convert BTU per hour (BTU/h) to Watt (W) using the exact conversion factor (1 btu per hour = 0.2930710702 watt). See the formula, worked examples, conversion table, history, and common uses.
BTU per hour to Watts converter
Converter
Power Converter
Convert watts, horsepower, refrigeration tons, BTU per hour, and engineering power units.
Context values
Some unit families need one extra value for a physically accurate result.
The watt is one joule per second.
Result = input x 0.2930710702 / 1.
Power uses the watt as the base unit.
Reserved above the conversion cards and below the converter.
About Converting BTU per hour to Watts
BTU per hour and Watt both describe power output, and the conversion is a routine part of comparing an engine or motor's spec sheet across countries that use different power units. Specifically: Power rate using BTU per hour, and the watt is one joule per second.
Formula
watts = btu per hour × 0.293071070172
This factor comes from each unit's defined relationship to the category's base unit: 1 btu per hour equals 0.293071070172 base units, and 1 watt equals 1 base unit, so dividing one by the other gives the direct btu per hour-to-watt factor of 0.293071070172.
Simple example
1 BTU/h × 0.2930710702 = 0.2930710702 W
1 btu per hour = 0.2930710702 watts.
Real-world example
100 BTU/h × 0.2930710702 = 29.30710702 W
100 btu per hour = 29.30710702 watts.
Conversion table
| BTU per hour (BTU/h) | Watt (W) |
|---|---|
| 1 BTU/h | 0.2930710702 W |
| 10 BTU/h | 2.930710702 W |
| 100 BTU/h | 29.30710702 W |
| 500 BTU/h | 146.5355351 W |
| 1,000 BTU/h | 293.0710702 W |
| 5,000 BTU/h | 1,465.355351 W |
Reverse conversion: Watt to BTU per hour
0.2930710702 W × 3.412141633 = 1 BTU/h
0.2930710702 watts = 1 btu per hour.
btu per hour = watts × 3.41214163313
For a page dedicated to this direction, see Watt to BTU per hour.
Understanding the BTU per hour (BTU/h)
Power rate using BTU per hour.
Understanding the Watt
Watt (W) measures power. The watt is the SI derived unit of power: one joule of energy per second. It is classified as a SI derived unit.
Where it's used: Standard scientific and everyday power unit worldwide
Uses of the Watt today
- Electrical appliance power ratings worldwide
- Light bulb brightness-equivalent labeling
- Engine and motor power specifications (alongside horsepower)
History of the Watt
The watt is named after James Watt, whose improvements to the steam engine in the late 18th century were commercially pivotal; ironically, Watt himself used horsepower (a unit he helped popularize) to market his engines. The watt was formally adopted as a unit at the 1889 General Conference on Weights and Measures and became the SI derived unit of power in the 20th century.
Historical origin. Watt was not the invention of a single named person; it developed through the process described above.
Watt — sources
- BIPM SI Brochure — Coherent derived units — Defines the watt as the SI unit of power.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many watts are in 1 btu per hour?
1 btu per hour equals 0.2930710702 watts, using the exact defined conversion factor rather than an estimate.
How do I convert btu per hour to watt?
Multiply the btu per hour value by 0.2930710702. The converter above does this instantly to whatever precision you set.
How do I convert watt back to btu per hour?
Use the reverse factor: 1 watt equals 3.412141633 btu per hour. You can also use the swap control in the converter above to flip the direction instantly.
What is a btu per hour?
BTU per hour (BTU/h) is a unit of power.
What is a watt?
Watt (W) measures power. The watt is the SI derived unit of power: one joule of energy per second. It is classified as a SI derived unit.
Is the btu per hour to watt conversion exact?
Yes. Both btu per hour and watt are defined by fixed standards rather than physical artifacts, so the factor of 0.2930710702 used above is exact to as many digits as you choose to display.