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Period of a pendulum (T) in Seconds is:

T = 2 * PI * (L/g)1/2

L = Length of Pendulum in Meters

g = Acceleration due to gravity = 9.81 m/s2

PI = 3.14

The period is independent of the mass or travel (angle) of the pendulum.

The frequency (f) of a pendulum in Hertz is the inverse of the Period.

f = 1/T

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