Angle / gon → °
Convert Gradians to Degrees
Convert plane angles in radians, degrees, turns, and survey grads. Convert Gradians (gon) to Degrees (°). Find the formula, worked examples, unit definitions, and practical guidance below.
Reverse: Degrees to Gradians →
How to convert gradians to degrees
A full turn is 2π radians, 360 degrees, or 400 gradians. Decimal degrees are not degrees-minutes-seconds notation. Angular minutes and seconds are not time units.
Use x for the value in gon, b for the intermediate value in rad, and y for the result in °.
° = gon × 0.015707963267948967 ÷ 0.017453292519943295
Worked examples
10 gon ≈ 9 °
Step 1: (10 × 0.0157079632679) ≈ 0.157079632679 rad.
Step 2: 0.157079632679 ÷ 0.0174532925199 ≈ 9 °.20 gon ≈ 18 °
Step 1: (20 × 0.0157079632679) ≈ 0.314159265359 rad.
Step 2: 0.314159265359 ÷ 0.0174532925199 ≈ 18 °.
Results are rounded to 12 significant digits. Converting units does not increase the precision of the original measurement. Very large or small values outside JavaScript’s finite numeric range are rejected.
About Gradians
Gradians (gon) measures angle under the conventions above. The base value in rad is (x × 0.0157079632679), where x is the numerical value in gon. Factors shown here are rounded for display; calculations use the stored factor.
About Degrees
Degrees (°) measures angle under the conventions above. The base value in rad is (x × 0.0174532925199), where x is the numerical value in °. Factors shown here are rounded for display; calculations use the stored factor.
Definitions and sources
Carry the same physical assumptions into subsequent physics calculations.
Gradians to degrees reference table
| Gradians (gon) | Degrees (°) |
|---|---|
| 1 | 0.9 |
| 5 | 4.5 |
| 10 | 9 |
| 25 | 22.5 |
| 50 | 45 |
| 100 | 90 |
| 1000 | 900 |
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