Quick Answer
1 gradian equals 0.015708 radians. To convert gradians to radians, multiply the value by this factor.
Key Facts
- Reverse: 1 radian = 63.662 gradians.
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1 grad = 0.015708 radians
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1 gradian equals 0.015708 radians. To convert gradians to radians, multiply the value by this factor.
Formula: value ÷ 63.662
Prefer to skip the math? Type any value in the converter above and it converts instantly.
| Gradians (grad) | Radians (rad) |
|---|---|
| 1 grad | 0.015708 rad |
| 2 grad | 0.0314159 rad |
| 5 grad | 0.0785398 rad |
| 10 grad | 0.15708 rad |
| 25 grad | 0.392699 rad |
| 50 grad | 0.785398 rad |
| 100 grad | 1.5708 rad |
| 250 grad | 3.92699 rad |
| 500 grad | 7.85398 rad |
| 1,000 grad | 15.708 rad |
Enter the value above and the result appears instantly — the calculation runs entirely in your browser. Formula: value ÷ 63.662.
1 gradian = 0.015708 radians (shown to 6 significant figures — the converter itself computes at full precision). The reverse factor is 1 radian = 63.662 gradians.
1 grad = 0.015708 rad; 10 grad = 0.15708 rad; 100 grad = 1.5708 rad. Use the full conversion table below for more reference values.
The gradian was defined during the French metrication effort so a right angle equals exactly 100 gradians, making a full turn 400 — nicer for decimal math, less aligned with astronomy and timekeeping (360 divides evenly by 2, 3, 4, 5, 6, 8, 9, 10, 12…). Engineering in most countries still uses degrees; gradians survive mainly in surveying and some European calculators.