Calculate horsepower from torque and RPM. Understand your engine's power output and performance characteristics.
Advertisement
Enter Your Measurements
Results
Horsepower
238.00
hp
Advertisement
Formula
Horsepower = (Torque × RPM) / 5252
How to Use This Calculator
How to Use
- 1
Enter your engine's torque rating in lb-ft.
- 2
Enter the RPM at which peak torque is produced.
- 3
Get the horsepower output.
Frequently Asked Questions
Frequently Asked Questions
What's the difference between horsepower and torque?
Torque is rotational force (how hard the engine pulls). Horsepower is how quickly it does that work. Torque accelerates you; HP determines top speed.
Why the 5252 number?
5252 is a constant that comes from unit conversion. It converts (torque in lb-ft × RPM) to horsepower.
Advertisement
Related Calculators
Related Calculators
About This Calculator
This calculator uses the formula: Horsepower = (Torque × RPM) / 5252. All calculations follow industry-standard methods. Results are estimates — always verify with a licensed professional for structural or code-compliant work.
Built and maintained by the CalcSmart team. Last updated March 2026.
▶Embed this calculator on your website
Copy and paste this code into your page:
<iframe src="https://calcsmart.io/embed/horsepower-calculator" width="100%" height="520" frameborder="0" style="border-radius:8px;border:1px solid #e5e7eb" title="Horsepower Calculator"></iframe>Free to embed. Attribution link included automatically.