This circle area from diameter reference table shows the area for a range of diameter values. Every figure is computed with the same engine that powers our Circle Area from Diameter Calculator, so the numbers are exact.
| Diameter | Area | Circumference |
|---|---|---|
| 2.5 | 4.9087 | 7.8540 |
| 5 | 19.6350 | 15.7080 |
| 7.5 | 44.1786 | 23.5619 |
| 10 | 78.5398 | 31.4159 |
| 15 | 176.7146 | 47.1239 |
| 20 | 314.1593 | 62.8319 |
| 30 | 706.8583 | 94.2478 |
| 50 | 1,963.4954 | 157.0796 |
| 70 | 3,848.4510 | 219.9115 |
| 100 | 7,853.9816 | 314.1593 |
How to use this table
Find the row closest to your diameter and read across to the area. For a value between two rows, the real figure sits between them — or enter your exact numbers in the Circle Area from Diameter Calculator for a precise answer.
Need a value that is not in the table? — the Circle Area from Diameter Calculator does it instantly, for free, with the formula and a worked example built in.
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