Gradian to Turn (gon to turn)
Result
0.0025 Turn
Formula
turn = gon × 0.0025
1 gon = 0.0025 turn, and 1 turn = 400 gon.
A full turn is 360°, 2π radians or 400 gradians, so 1 rad = 180/π ° (about 57.29578°) and 1 gradian = 0.9°.
Worked examples
- 1 gon × 0.0025 = 0.0025 turn
- 10 gon × 0.0025 = 0.025 turn
- 100 gon × 0.0025 = 0.25 turn
Common mistakes
- Calculators and spreadsheet trigonometry functions usually expect radians: sin(30) in radian mode is −0.988, not 0.5.
- Compass bearings run clockwise from north; mathematical angles run anticlockwise from the positive x-axis.
Gradian to Turn table
| Gradian (gon) | Turn (turn) |
|---|---|
| 1 | 0.0025 |
| 2 | 0.005 |
| 5 | 0.0125 |
| 10 | 0.025 |
| 20 | 0.05 |
| 50 | 0.125 |
| 100 | 0.25 |
| 1,000 | 2.5 |
The units
- Gradian (gon)
- 1 Gradian = 0.9 Degree.
- Turn (turn)
- 1 Turn = 360 Degree.
Sources for these factors
- The International System of Units (SI Brochure), 9th edition — BIPM
- Guide for the Use of the International System of Units (SP 811), Appendix B: conversion factors — NIST
Last reviewed against these sources. An automated check recomputes every factor from its definition on each build. How we check accuracy