Convert gradians (gon) to degrees, radians, and other angle measurement units.
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A gradian, or gon, is a unit of plane angle equal to 1/400 of a full rotation. A full circle is 400 gradians, and a right angle is exactly 100 gradians — which simplifies surveying calculations.
Common Gradian Conversions
- 1 grad = 0.9° — multiply by 9/10 to convert to degrees.
- 1 grad = π/200 rad ≈ 0.01571 rad — multiply by π/200 to convert to radians.
- 100 gradians = 90° — a right angle.
- 200 gradians = 180° — a straight angle.
- 400 gradians = 360° — a full rotation.
Gradians are primarily used in surveying, cartography, and construction — especially in Europe. In everyday life and most other fields, degrees are the standard.