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Pendulum Period Calculator
Find the swing period of a simple pendulum from its length and gravity, or the length that gives a chosen period of swing.
T = 2ฯ ร โ(L รท g)
A pendulum's period depends on its length and gravity only, not on the bob's mass or the size of a small swing.
Period
โ s
The calculation runs entirely in your browser โ no data leaves your device. Change any number and the answer updates instantly.