Period to frequency calculator

Frequency in hertz = 1 ÷ period in seconds.

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Period (s)

Answer

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Frequency in hertz = 1 ÷ period in seconds.

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Precision and calculation record

Decimal places in numeric results and text downloads

Rounding changes displayed numbers, not the calculation. Text, fractions, matrices and CSV schedules keep their own formatting. Automatic keeps up to 12 significant digits, with money shown to cents where applicable.

Step-by-step calculation

Inputs are substituted below. Each line evaluates the next operation; intermediate values are displayed to 12 significant digits while the calculation uses full precision.

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Formula and assumptions

A period must be positive. This relationship assumes a repeating cycle with a meaningful period.

Automatic precision shows numbers to 12 significant digits. Thousands separators such as 1,000 are accepted; use a dot for decimals.

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Updated 2026-09-26

Using Period to frequency calculator

Frequency in hertz = 1 ÷ period in seconds.

A period must be positive. This relationship assumes a repeating cycle with a meaningful period.

Next: Frequency calculator

A worked example

With period (s) = 0.02, the frequency (hz) is 50.

Next: Wavelength calculator

Before you use the result

A period must be positive. This relationship assumes a repeating cycle with a meaningful period.

Example results for period (s)

These examples use the formula above. They are reference calculations, not recommended settings.

Period (s)	Frequency (Hz)
0.01	100
0.02	50
0.04	25

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