BTU to Watts Converter
Convert between BTU/hr and watts instantly. One watt equals approximately 3.412 BTU/hr.
Operated by: Cloudtopia Maintenance: Updated when formulas, supplier packaging, or guidance change.
BTU/hr
W
1 BTU/hr = 0.29 Watts
Type in either field — the other updates instantly.
The Conversion Formula
Watts = BTU/hr × 0.29307
The reverse: BTU/hr = Watts × 3.41214. BTU (British Thermal Unit) per hour is the standard unit for heating and cooling capacity in North America, while watts (and kilowatts) are used internationally.
Quick Reference Table
| BTU/hr | Watts | kW | Typical Use |
|---|---|---|---|
| 5,000 | 1,465 | 1.47 | Small window AC |
| 8,000 | 2,345 | 2.34 | Medium window AC |
| 12,000 | 3,517 | 3.52 | 1 ton AC / mini-split |
| 24,000 | 7,034 | 7.03 | 2 ton AC |
| 60,000 | 17,584 | 17.58 | Residential furnace |
| 100,000 | 29,307 | 29.31 | Large furnace |
HVAC Sizing
Air conditioners are often rated in "tons." One ton of cooling equals 12,000 BTU/hr (or about 3,517 watts). When comparing HVAC units from North American manufacturers (BTU ratings) with international brands (watt or kW ratings), this conversion is essential for apples-to-apples comparison.
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