Belts & Pulleys
Belt Power Calculator
Enter the effective belt tension difference and belt speed to estimate the corresponding transmitted mechanical power.
Inputs
Formula
Belt power from effective pull
Worked example
Using the default values shown in the calculator, the same formula gives the following result. This is a quick sanity check for the calculation, not a design recommendation.
Inputs
- Effective belt tension
- 500 N
- Belt speed
- 10 m/s
Result
- Transmitted power
- 5 kW
Related calculators
Continue your workflow with a related calculation.
Belts & Pulleys
Belt Effective Tension Calculator
Calculate effective belt pull from transmitted mechanical power and belt linear speed.
Belts & Pulleys
Belt Speed Calculator
Calculate belt linear speed from pulley diameter and rotational speed.
Power, Torque & Speed
Power from Torque and RPM Calculator
Calculate mechanical shaft power from torque and rotational speed.
Frequently asked questions
What tension value should I enter?
Use the effective pull, meaning tight-side tension minus slack-side tension, when applying the simple P = Fv relationship.
Does this select a belt size?
No. Belt selection also requires service factors, pulley size, wrap, speed limits, installation tension, and manufacturer ratings.