Pendulum Calculator

Ignored in 'Length' mode — it is the value being solved for. Length is pivot to centre of mass.
Ignored in 'Period' mode — it is the value being solved for.
Worked example result
Period2.0064 s
Frequency0.4984 Hz
Length1.0000 m

A 1 m pendulum has a period of about 2.006 s and frequency 0.498 Hz — the principle behind longcase (grandfather) clocks.

T = 2π √(L ÷ g); L = g × (T ÷ 2π)²; f = 1 ÷ T · Powered by CalcHub — Pendulum Calculator