Frequency calculator

Frequency = cycle count ÷ time in seconds.

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Cycles

Elapsed time (s)

Answer

…

Frequency = cycle count ÷ time in seconds.

More results

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.

Saved scenario

Save the current answer, then change an input to compare. This clears when you leave.

Formula and assumptions

Use complete or measured fractional cycles over a known time; a changing signal gives only average frequency.

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 Frequency calculator

Frequency = cycle count ÷ time in seconds.

Use complete or measured fractional cycles over a known time; a changing signal gives only average frequency.

Next: Wave speed calculator

A worked example

With cycles = 120, elapsed time (s) = 2, the frequency (hz) is 60.

Next: Period to frequency calculator

Before you use the result

Use complete or measured fractional cycles over a known time; a changing signal gives only average frequency.

Example results for cycles

These examples use Elapsed time (s): 2. They are reference calculations, not recommended settings.

Cycles	Frequency (Hz)
60	30
120	60
240	120

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ToolOctopus. “Frequency calculator.” Updated 2026-09-26. https://tooloctopus.com/frequency-calculator.

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