Friction Calculator

Find Friction Force

Coefficient of Friction (μ)

Normal Force (N)

Find Coefficient (μ)

Friction Force (N)

Normal Force (N)

Object on Incline

Mass (kg)

Incline Angle (degrees)

Coefficient of Friction (μ)

Formula

f = μN | Incline: f = μmg·cos(θ)

Frequently Asked Questions

What is friction?

Friction force = μ × Normal Force, where μ is the coefficient of friction. Static friction (before motion) is usually higher than kinetic friction (during motion). Common μ values: rubber on concrete ~1.0, wood on wood ~0.4, steel on steel ~0.3, ice ~0.03.

You may also need

Force Calculator (F = ma)

Free force calculator. Calculate force, mass, or acceleration using Newton's second law F = ma.

Science

Acceleration Calculator

Free acceleration calculator. Calculate acceleration from velocity change and time, or from force and mass.

Science

Momentum Calculator

Free momentum calculator. Calculate linear momentum (p = mv) and impulse for physics problems.

Science