Friction Calculator

Force and Coefficient

Calculate friction force and coefficient of friction for various surfaces using F = μN.

Friction Parameters

Static friction coefficient (0-2 typical range)

kg
°

0° = horizontal, 90° = vertical

Friction Formula

F = μN

where: F = friction force, μ = coefficient, N = normal force

Note

Static friction coefficients are typically higher than kinetic (sliding) friction. Values shown are for static friction.

About Friction

Friction is a force that opposes motion between surfaces in contact. It depends on the normal force and the coefficient of friction.

  • Static friction prevents motion
  • Kinetic friction opposes sliding
  • Proportional to normal force

Applications

  • Brake system design
  • Tire and road interaction
  • Machine component design
  • Sports equipment
  • Material selection