Mechanical Horsepower to Foot-pounds per Second Converter
Convert mechanical horsepower (hp) to foot-pounds per second (ft·lbf/s) with the calculator below. Enter a value in either field for an instant result.
10 hp equals 5500 ft·lbf/s.
Mechanical Horsepower to Foot-pounds per Second Conversion Table
Use these common values as a quick reference.
| Mechanical Horsepower (hp) | Foot-pounds per Second (ft·lbf/s) |
|---|---|
| 0.01 hp | 5.5 ft·lbf/s |
| 0.1 hp | 55 ft·lbf/s |
| 1 hp | 550 ft·lbf/s |
| 2 hp | 1100 ft·lbf/s |
| 5 hp | 2750 ft·lbf/s |
| 10 hp | 5500 ft·lbf/s |
| 20 hp | 11000 ft·lbf/s |
| 50 hp | 27500 ft·lbf/s |
| 100 hp | 55000 ft·lbf/s |
| 1000 hp | 550000 ft·lbf/s |
How to Convert Mechanical Horsepower to Foot-pound per Second
Conversion: 1 hp = 550 ft·lbf/s.
Formula: foot-pounds per second = mechanical horsepower × 550
- Enter the mechanical horsepower value.
- Apply the conversion formula shown above.
- Round the result only as much as your use requires.
Example: 10 hp = 5500 ft·lbf/s.
Understanding the Mechanical Horsepower to Foot-pound per Second Conversion
One mechanical horsepower equals 550 ft·lbf/s. Because this factor is greater than one, the numerical value usually becomes larger when converting from hp to ft·lbf/s, even though the measured quantity does not change.
Power measures the rate at which energy is transferred or work is performed. Watts are the SI reference, while horsepower and BTU per hour are common for engines, motors, heating and cooling.
Mechanical Horsepower is commonly used for engines, motors and machinery, while Foot-pound per Second is commonly used for mechanical and engineering calculations. Converting between them makes measurements easier to compare without changing the quantity being described.
Worked Mechanical Horsepower to Foot-pound per Second Examples
These examples show how the conversion works for several practical values.
- 0.5 hp: 0.5 × 550 = 275 ft·lbf/s.
- 3 hp: 3 × 550 = 1650 ft·lbf/s.
- 25 hp: 25 × 550 = 13750 ft·lbf/s.
Accuracy, Precision and Rounding
Everyday Units stores each unit as a factor relative to a shared base unit—Watt. The entered value is converted to that base and then to foot-pound per second.
The calculator normally shows up to ten significant digits and removes unnecessary trailing zeros. This balances accuracy with readability. If the result will be used in engineering, science, medicine, trade or another precision-sensitive setting, follow the rounding and tolerance rules required for that specific use.
Common mistakes to avoid
- Check that the selected symbols match the units shown in the source measurement.
- Do not round the conversion factor before completing the calculation.
- Keep the unit symbol beside the number so the result cannot be mistaken for another measurement.
About the Units
Mechanical Horsepower (hp)
Definition: One mechanical horsepower is equal to 745.6998716 W in the converter’s base system.
History and origin: Mechanical horsepower was developed to compare engines with draft horses.
Current use: This unit is commonly used for engines, motors and machinery.
Foot-pound per Second (ft·lbf/s)
Definition: One foot-pound per second is equal to 1.355817948 W in the converter’s base system.
History and origin: This power unit expresses mechanical work per second.
Current use: This unit is commonly used for mechanical and engineering calculations.
Frequently Asked Questions
How many foot-pounds per second are in one mechanical horsepower?
One mechanical horsepower is 550 ft·lbf/s. The calculator uses this relationship for every value entered.
What is the reverse foot-pound per second to mechanical horsepower conversion?
One foot-pound per second equals 0.001818181818 hp. Use the reverse-conversion link below to open that calculator directly.
Can I convert decimal and very small values?
Yes. Enter integers, decimals, or very small values in either field. Results use sensible precision, with scientific notation only when it improves readability.
How should I round the result?
Keep the full calculator result during intermediate work, then round once at the end. Everyday estimates may need only two or three decimal places, while technical work may require more significant digits.
Is the mechanical horsepower to foot-pound per second conversion accurate?
The calculation uses the centralized conversion constant shown on this page. Everyday Units converts through the category’s base unit and keeps more precision internally than is normally needed for display.
How This Calculator Works
All calculations happen locally in your browser. No conversion request is sent to an external service. The same centralized unit definitions power the calculator, formula, examples and tables, which helps keep the figures consistent across every related page. Read our conversion methodology and sources for standards, assumptions and rounding details.
For a quick check, compare the forward and reverse relationships above: converting a value to ft·lbf/s and back to hp should return the original measurement, apart from normal display rounding.