Power conversion
1 mechanical horsepower (hp(I)) equals 550 foot-pound per second (ft·lb/s). Enter any value below to convert from hp(I) to ft·lb/s.
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1 hp(I) = 550 ft·lb/s
| Unit | Value |
|---|---|
| Watt W | 745.6998715823 |
| Kilowatt kW | 0.7456998716 |
| Megawatt MW | 0.0007456999 |
| Milliwatt mW | 745,699.8715822703 |
| Mechanical horsepower hp(I) | 1 |
| Metric horsepower PS | 1.0138696654 |
| BTU (IT) per hour BTU/h | 2,544.433577644 |
| Foot-pound per second ft·lb/s | 550 |
Formula
Use this relationship for a direct conversion:
2 hp(I) = 1,100 ft·lb/s.
Horsepower type is always identified because mechanical and metric horsepower differ by about 1.4 percent.
Quick reference
| Mechanical horsepower (hp(I)) | Foot-pound per second (ft·lb/s) |
|---|---|
| 0.01 | 5.5 |
| 0.1 | 55 |
| 1 | 550 |
| 2 | 1,100 |
| 5 | 2,750 |
| 10 | 5,500 |
| 25 | 13,750 |
| 50 | 27,500 |
| 100 | 55,000 |
| 1,000 | 550,000.0000000002 |
From unit
Exactly 550 foot-pounds force per second.
Symbol: hp(I)
To unit
One foot-pound of work per second.
Symbol: ft·lb/s
Keep converting
Source
Definitions are checked against NIST SP 811: Power units. Calculations use full internal precision before display rounding.
View the complete power converterQuestions
Use the formula ft·lb/s = hp(I) x 550. 1 mechanical horsepower (hp(I)) equals 550 foot-pound per second (ft·lb/s).
Horsepower type is always identified because mechanical and metric horsepower differ by about 1.4 percent.
