Pendulum Period Table: Period by Pendulum length
Reference table of period for Pendulum Period across a range of pendulum length values — exact, engine-computed figures you can read off at a glance.
Pendulum Period Calculator
Verified formula Updated Jun 2026 Private — runs on your device
Verified formula
Private
Period
2.0061
- Frequency
- 0.4985
For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.
How to use the Pendulum Period Calculator
The Pendulum Period Calculator works out your period, along with 1 related figure in an instant. Enter pendulum length and gravity and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.
- Enter the pendulum length.
- Enter the gravity.
- Read off your period, together with frequency — the calculator updates automatically, with no button to press.
Formula
The Pendulum Period Calculator uses the formula:
Period = 2 × 3.141592653589793 × √(Pendulum length ÷ Gravity)
Worked example
For example, with pendulum length of 1 m and gravity of 9.81 m/s², the period is 2.0061.
| Pendulum length | 1 m |
|---|---|
| Gravity | 9.81 m/s² |
| Period | 2.0061 |
|---|---|
| Frequency | 0.4985 |
Results are estimates for educational use, not professional advice.
Frequently asked questions
It is the time for one full swing: T = 2π√(L ÷ g). A 1 m pendulum on Earth has a period of about 2 seconds.
No. For a simple pendulum with small swings, the period depends only on length and gravity, not mass.
The period grows with the square root of length, so a four-times-longer pendulum swings twice as slowly.
The formula assumes small angles. For wide swings the real period is slightly longer.
The Pendulum Period Calculator uses the formula: Period = 2 × 3.141592653589793 × √(Pendulum length ÷ Gravity). For example, with pendulum length of 1 m and gravity of 9.81 m/s², the period is 2.0061.
Enter the pendulum length. Enter the gravity. Read off your period, together with frequency — the calculator updates automatically, with no button to press.
Related guides
How to Calculate Pendulum Period: Formula, Steps & Examples
Learn how to calculate Pendulum Period — the formula explained step by step, with worked examples and a free calculator to check your answer.