Pendulum Period Calculator

Enter pendulum length and gravitational acceleration to calculate period, frequency, and angular frequency under the small-angle simple-pendulum model.

Pendulum length

Gravitym/s²

Model

Simple pendulum · small-angle approximation

—T = 2π√(L/g)

—Frequency

—Angular frequency

—Cycles/min

—Length used

Valid for an ideal point mass, massless string, negligible damping, and small oscillation angle. Large amplitudes require a different model.

Connected mechanics workflow

v10.88 connects translational motion, forces, momentum, energy, rotation, gravitation, waves and oscillation while preserving the established v2.3/v4.4/v10.38 physics engines.

State the model before trusting the number

Classical formulas are only as good as their assumptions and units. Air resistance, damping, deformation, non-constant forces and measurement uncertainty are not silently invented when the selected model does not include them.

How to use this Pendulum Period Calculator

Calculate the ideal small-angle period and frequency of a simple pendulum.

Enter, paste, upload, or choose the inputs shown in the tool above.
Adjust the available options for the result you need.
Review the output before copying, downloading, or using it elsewhere.

What this tool does

Enter pendulum length and gravitational acceleration to calculate period, frequency, and angular frequency under the small-angle simple-pendulum model.

Practical tips and limits

Review the inputs and result before using the output elsewhere. Keep the original data when the operation changes or replaces content.