Direct conversion
Convert radian [rad] to gradian [gon] instantly with formula, examples, chart, and FAQs.
Quick answer
Use the calculator below for any custom value, then check the formula, examples, chart, and reverse conversion links.
1 radian [rad] = 63.661977 gradian [gon]
1 radian [rad] = 63.661977 gradian [gon]
Example: 1 radian [rad] equals 63.661977 gradian [gon].
Angle conversions use radian as the reference unit. Degree, arcminute, arcsecond, turn, and surveying units are converted through fixed factors.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-05-21.
The radian is the SI angle unit based on the radius and arc length of a circle.
HistoryRadians became standard in mathematics because they simplify trigonometric formulas and calculus.
Current useRadians are used in mathematics, physics, engineering, programming, rotation, and angular velocity calculations.
The gradian (gon) is a angle unit used to express measurements in this converter.
HistoryThis unit is included because it appears in practical measurement systems, technical references, product specifications, or everyday conversion needs.
Current useUse gradian when comparing angle values, checking specifications, converting between systems, or preparing quick estimates.
| radian [rad] | gradian [gon] |
|---|---|
| 1 | 63.661977 |
| 2 | 127.323954 |
| 5 | 318.309886 |
| 10 | 636.619772 |
| 20 | 1273.239545 |
| 25 | 1591.549431 |
| 50 | 3183.098862 |
| 100 | 6366.197724 |
| 1000 | 63661.977237 |
Use this formula: 1 radian [rad] = 63.661977 gradian [gon] Enter your value in the calculator and the result updates instantly.
1 radian [rad] equals 63.661977 gradian [gon].
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.