Spring Period Calculator
Ideal spring period = 2π × √(mass / stiffness).
Open toolPendulum Period Calculator
Small-angle pendulum period = 2π × √(length / gravity). Simple pendulum, small angular amplitude, no friction.
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Enter your details
Enter the inputs, then select Calculate.
Your result
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Result will appear here
How Pendulum Period Calculator works
Small-angle pendulum period = 2π × √(length / gravity).
Simple pendulum, small angular amplitude, no friction. Large-amplitude correction is excluded. Finite real inputs; output uses up to 12 significant digits. Floating-point results may be rounded.
How to use Pendulum Period Calculator
Follow the labelled inputs.
Enter pendulum length (m)
Replace the example with pendulum length (m). The field labels specify the expected format and units.
Input and settings
Check the remaining inputs
Set gravity (m/s²). Simple pendulum, small angular amplitude, no friction.
Tool result
Run, review and save
Select Calculate. Review the calculated result, then copy it or download the result text.
Review the details
Examples and uses for Pendulum Period Calculator
Check the supplied example
The starting example produces 2.00640929259 s. Small-angle pendulum period = 2π × √(length / gravity).
Use your own inputs
Read the labels for pendulum length (m) and gravity (m/s²). Simple pendulum, small angular amplitude, no friction.
Record a reviewed result
Copy the calculated result into your notes. Keep the formula and assumptions with it if someone else needs to reproduce the calculation.
How to read the result
Read the units and assumptions with the output.
Small-angle pendulum period = 2π × √(length / gravity).
Simple pendulum, small angular amplitude, no friction. Large-amplitude correction is excluded. Finite real inputs; output uses up to 12 significant digits. Floating-point results may be rounded.
Supported input and limits
Check the stated scope before you run it.
Simple pendulum, small angular amplitude, no friction. Large-amplitude correction is excluded. Finite real inputs; output uses up to 12 significant digits. Floating-point results may be rounded.
The input stays in this browser. Copy result and Download save the same displayed text.
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Open toolPendulum Period Calculator: common questions
Answers about using Pendulum Period Calculator and understanding its results.
What assumptions and input limits apply?
Simple pendulum, small angular amplitude, no friction. Large-amplitude correction is excluded. Finite real inputs; output uses up to 12 significant digits. Floating-point results may be rounded.
How can I save the output?
Use Copy result to copy the displayed text, or Download to save it as a text file. The tool runs in your browser and does not require an account.
Calculate with your input
Check the calculated result, then copy or download it.