Radius to Circumference
Need to convert Radius to Circumference? Our professional calculator delivers accurate results instantly. Features conversion tables, formulas, and practical...
1 Radius = 6.28319 Circumference (standard conversion factor). · Updated 2026-05-29
Circle Calculator
Radius to Circumference Conversion Table
Common Radius to Circumference conversion values
| Radius | Circumference |
|---|---|
| 1 r | 6.283 C |
| 10 r | 62.832 C |
| 50 r | 314.159 C |
| 100 r | 628.319 C |
| 500 r | 3141.593 C |
| 1000 r | 6283.185 C |
The formula
Circle conversions use π-based geometry (radius, diameter, circumference, area).
Example: 1 Radius = 6.28319 Circumference