UnitConWatts to BTU/hr Converter
Convert watts to BTU per hour when sizing US HVAC systems, comparing heat pump output with air conditioner capacity, or interpreting heating element specifications in US building codes.
Formula
Multiply watts by 3.41214 to get BTU per hour. To reverse, divide BTU/hr by 3.41214 to get watts.
Quick reference
| Watt (W) | BTU per Hour (BTU/h) |
|---|---|
| 100 | 341.2142 |
| 500 | 1,706.071 |
| 1000 | 3,412.142 |
| 2000 | 6,824.283 |
| 3500 | 11,942.5 |
| 5000 | 17,060.71 |
| 7000 | 23,884.99 |
| 10000 | 34,121.42 |
| 15000 | 51,182.12 |
| 30000 | 102,364.2 |
About these units
Watt
The watt became the SI unit of power in 1948. It is the universal measure for electrical and mechanical power in science and increasingly in building systems worldwide.
BTU per Hour
BTU per hour is the entrenched US HVAC unit, used by contractors, manufacturers, and code requirements. Despite SI standardization elsewhere, BTU/hr persists in the US heating and cooling industry.