This pendulum period reference table shows the period for a range of pendulum length values, assuming a gravity of 9.81 m/s². Every figure is computed with the same engine that powers our Pendulum Period Calculator, so the numbers are exact.
| Pendulum length | Period | Frequency |
|---|---|---|
| 0.25 m | 1.0030 | 0.9970 |
| 0.5 m | 1.4185 | 0.7050 |
| 0.75 m | 1.7373 | 0.5756 |
| 1 m | 2.0061 | 0.4985 |
| 1.5 m | 2.4569 | 0.4070 |
| 2 m | 2.8370 | 0.3525 |
| 3 m | 3.4746 | 0.2878 |
| 5 m | 4.4857 | 0.2229 |
| 7 m | 5.3076 | 0.1884 |
| 10 m | 6.3437 | 0.1576 |
How to use this table
Find the row closest to your pendulum length and read across to the period. For a value between two rows, the real figure sits between them — or enter your exact numbers in the Pendulum Period Calculator for a precise answer.
Need a value that is not in the table? — the Pendulum Period Calculator does it instantly, for free, with the formula and a worked example built in.
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