This circle radius from area reference table shows the radius for a range of circle area values. Every figure is computed with the same engine that powers our Circle Radius from Area Calculator, so the numbers are exact.
| Circle area | Radius | Diameter |
|---|---|---|
| 20 | 2.523133 | 5.0463 |
| 39 | 3.523363 | 7.0467 |
| 59 | 4.333622 | 8.6672 |
| 79 | 5.014627 | 10.0293 |
| 120 | 6.180387 | 12.3608 |
| 160 | 7.136496 | 14.2730 |
| 240 | 8.740387 | 17.4808 |
| 390 | 11.141852 | 22.2837 |
| 550 | 13.231419 | 26.4628 |
| 790 | 15.857642 | 31.7153 |
How to use this table
Find the row closest to your circle area and read across to the radius. For a value between two rows, the real figure sits between them — or enter your exact numbers in the Circle Radius from Area Calculator for a precise answer.
Need a value that is not in the table? — the Circle Radius from Area Calculator does it instantly, for free, with the formula and a worked example built in.
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