Pendulum Period Calculator
Small-angle pendulum period = 2π × √(length / gravity).
Open toolFind a periodic wave period as reciprocal frequency. Positive constant frequency, with period in seconds.
Enter the inputs, then select Calculate.
Result will appear here
Find a periodic wave period as reciprocal frequency.
Positive constant frequency, with period in seconds. Inputs and results use floating-point numbers and may be rounded. Results show up to 12 significant digits.
Follow the labelled inputs.
Replace the example with wave frequency (hz). The field labels specify the expected format and units.
This tool uses one input. Check the supported range before running it. Positive constant frequency, with period in seconds.
Select Calculate. Review the calculated result, then copy it or download the result text.
The starting example produces 0.02 s. Find a periodic wave period as reciprocal frequency.

Read the labels for wave frequency (hz). Positive constant frequency, with period in seconds.

Copy the calculated result into your notes. Keep the formula and assumptions with it if someone else needs to reproduce the calculation.

Read the units and assumptions with the output.
Check the stated scope before you run it.
Positive constant frequency, with period in seconds. Inputs and results use floating-point numbers and may be rounded. Results show up to 12 significant digits.
The input stays in this browser. Copy result and Download save the same displayed text.

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Positive constant frequency, with period in seconds. Inputs and results use floating-point numbers and may be rounded. Results show up to 12 significant digits.
Copy result copies the displayed text. Download saves the same text as a TXT file. Processing runs in this browser without an account.
Check the calculated result, then copy or download it.