Convert Radian to Gradian
Use this free converter to change radians (rad) into gradians (grad). Radian and gradian both measure angle. As a quick reference, 1 rad equals 63.661977 grad, and 1 grad equals 0.015707963 rad.
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Gradian (grad)
63.661977
1 rad = 63.661977 grad
Angle conversion table
| Radian | Gradian |
|---|---|
| 0.01 | 0.63661977 |
| 0.1 | 6.3661977 |
| 0.5 | 31.830989 |
| 1 | 63.661977 |
| 2 | 127.32395 |
| 3 | 190.98593 |
| 5 | 318.30989 |
| 10 | 636.61977 |
| 20 | 1273.2395 |
| 25 | 1591.5494 |
| 50 | 3183.0989 |
| 100 | 6366.1977 |
| 1,000 | 63661.977 |
How to convert Radian to Gradian
Multiply the radian value by 63.661977 to get gradians.
- Enter the number of radians you want to convert.
- The converter instantly shows the equivalent value in gradians.
- Worked example: 15 rad × 63.661977 = 954.92966 grad.
- Use the swap button to reverse the conversion (gradian to radian).
About these units
Radian (rad)
- Definition
- A radian (rad) is the SI angle for which the arc length equals the radius; a full circle is 2π radians.
- History
- The concept was formalised in the 19th century and named in 1873.
- Current use
- Radians are the standard angle unit in mathematics and physics.
Gradian (grad)
- Definition
- A gradian (grad) divides a right angle into 100 parts, so a full circle is 400 gradians.
- History
- It was introduced in France around the time of the metric system to decimalise angles.
- Current use
- Gradians are used in some surveying and civil-engineering contexts.
Frequently asked questions
How many gradians are in a radian?
There are 63.661977 grad in 1 rad. To convert, multiply the number of radians by 63.661977.
How do I convert radians to gradians?
Multiply the radian value by 63.661977 to get gradians. For example, 10 rad = 636.61977 grad.
Is this radian-to-gradian converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Radian to other angle units
| Unit | 1 Radian equals |
|---|---|
| Degree (°) | 57.29578 ° |
| Gradian (grad) | 63.661977 grad |
| Arcminute (') | 3437.7468 ' |
| Arcsecond (") | 206264.81 " |
| Turn (turn) | 0.15915494 turn |