Mechanical Horsepower to BTU per Hour Converter
1 mechanical horsepower ≈ 2,544.43358 BTU per hour
Metric horsepower (PS) is a different unit, about 1.4% smaller.
1 mechanical horsepower equals 2,544.43 BTU per hour
How to convert mechanical horsepower to BTU per hour
Power is energy transferred per time: 1 W = 1 J/s. Mechanical, metric and electrical horsepower have different definitions; select the version stated on the equipment rating.
BTU/h = hp × 2544.433578One mechanical horsepower is 2544.433578 BTU per hour, so a single multiplication converts any value.
25,444.3 BTU/h ≈ 10 × 2544.433578Metric horsepower (PS) is a different unit, about 1.4% smaller.
Mechanical horsepower to BTU per hour conversion table
Common values in mechanical horsepower, converted to BTU per hour.
| Mechanical horsepower (hp) | BTU per hour (BTU/h) |
|---|---|
| 1 | 2,544.4336 |
| 2 | 5,088.8672 |
| 3 | 7,633.3007 |
| 4 | 10,177.734 |
| 5 | 12,722.168 |
| 10 | 25,444.336 |
| 20 | 50,888.672 |
| 25 | 63,610.839 |
| 50 | 127,221.68 |
| 100 | 254,443.36 |
| 250 | 636,108.39 |
| 500 | 1,272,216.8 |
| 1,000 | 2,544,433.6 |
About these units
mechanical horsepowerhp
Exactly 550 foot-pounds per second: about 745.7 watts. The US and UK engine unit.
BTU per hourBTU/h
The US rating unit for heating and air-conditioning capacity.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.