Physics

Damped Natural Frequency Calculator

Find damped frequency and damping ratio for a mass–spring–damper system.

SI units shown beside each fieldIdeal model explained below
Physics lab
Physics lab

Use the units beside each input and review the model assumptions.

See the method

Define your system

Runs on your device

Your calculated quantity

Your result

Let’s calculate.

Use the Calculate button to see your result.

Review the method below for assumptions and conventions.

How to use this tool

  1. Enter mass, spring stiffness, viscous damping.
  2. Select Calculate to view the result.
  3. Check the method and assumptions below before using the result.

The method, explained

Natural angular frequency = sqrt(k/m); damping ratio ζ=c/(2sqrt(km)); damped frequency = ωn sqrt(1−ζ²)/(2π) for ζ<1.

A WORKED EXAMPLE

Using mass = 1 kg, spring stiffness = 100 N/m, viscous damping = 2 N·s/m, the result is 1.58357169 Hz. Change these example inputs to match your task; use the method above to check each step.

Understanding your result

Linear viscous damping and free vibration. Critical and overdamped systems do not have an oscillatory damped frequency.

What to keep in mind

Linear viscous damping and free vibration. Critical and overdamped systems do not have an oscillatory damped frequency. An idealized educational model using the stated SI units. Real systems may need additional forces, losses or experimental measurements. Not a safety or equipment specification.

Common questions

How do I use this damped natural frequency calculator?

Find damped frequency and damping ratio for a mass–spring–damper system. Enter mass in kg, spring stiffness in N/m, viscous damping in N·s/m. The starting example is editable; use values for the same system or project.

Which assumptions affect this result?

Linear viscous damping and free vibration. Critical and overdamped systems do not have an oscillatory damped frequency.

Methodology maintained by ClarityKit. How these tools are built and checked.