Horsepower Calculator
Calculate horsepower from mechanical work (Force × Distance ÷ Time), engine torque and RPM, or convert between power units.
Horsepower Calculator
Calculate horsepower from mechanical work (P = Force × Distance / Time), engine torque and RPM (T × RPM / 5252), and convert between all international power units.
0.04 HP — 0.03 kW
Metric Equivalent: 0.041 PS (cv) | Total Power: 30 Watts| Power Unit | Calculated Equivalent |
|---|---|
| Mechanical Horsepower (hp / hp(I)) | 0.04 hp |
| Metric Horsepower (PS, cv, hk, pk) | 0.041 PS |
| Kilowatts (kW) | 0.03 kW |
| Watts (W / Joules per sec) | 30 W |
| Foot-Pounds per Second (ft·lbf/s) | 22.13 ft·lbf/s |
| British Thermal Units per Hour (BTU/hr) | 102.36 BTU/hr |
| Boiler Horsepower (hp(S)) | 0.0031 hp(S) |
Understanding Horsepower Calculator & Formula
The Horsepower Calculator on CalculatorScale.com is engineered to deliver instant, mathematically verified calculations conforming strictly to standard institutional equations. Whether planning long-term investments, managing household budgets, tracking clinical fitness targets, analyzing academic genetics, calculating veterinary dosages, or converting dimensional units, every calculation updates dynamically in real time without lag.
Every formula used in this tool adheres to certified international standards, including World Health Organization biometric metrics, veterinary clinical guidelines, NIST physical conversion constants, and standard biological equations. Results are computed entirely client-side inside your browser with complete data privacy, ensuring your sensitive numbers and statistics never leave your device.
Our calculators are 100% free with no registration, subscriptions, or paywalls required. You can toggle between imperial and metric units, customize input parameters, export calculation summaries, or embed this calculator directly into your own website or blog.
How to Use the Horsepower Calculator
- 1 Select your calculation mode: Physics Definition (Force × Distance / Time), Engine Torque & RPM, or Power Converter.
- 2 Enter the corresponding values (e.g. force and distance or torque and engine RPM).
- 3 Click the green "Calculate ▶️" button to view mechanical HP, metric PS, kilowatts, and BTU/hr.
Horsepower Calculator — Frequently Asked Questions
Q1 What is the exact definition of 1 Mechanical Horsepower? ▾
One mechanical (imperial) horsepower is defined as the work required to lift 550 pounds by 1 foot in 1 second (or 33,000 foot-pounds per minute), which equals exactly 745.69987 Watts.
Q2 How do you calculate horsepower from engine torque and RPM? ▾
Formula: Horsepower = (Torque in lb-ft × RPM) ÷ 5252. At exactly 5,252 RPM, an engine’s torque (in lb-ft) and horsepower values are always identical.
Q3 What is the difference between Mechanical HP and Metric HP (PS)? ▾
Mechanical horsepower (hp) equals 745.7 Watts, whereas metric horsepower (Pferdestärke / PS / cv) is defined as 75 kgf·m/s, which equals 735.5 Watts (~1.4% less than imperial HP).
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