角度是两个相交线或表面之间旋转的度量。它以程度（°）或弧度（rad）为单位进行测量。
1 FC = 400 gon
1 gon = 0.003 FC
例子:
将15 完整的圆圈转换为Gradian：
15 FC = 6,000 gon
| 完整的圆圈 | Gradian |
|---|---|
| 0.01 FC | 4 gon |
| 0.1 FC | 40 gon |
| 1 FC | 400 gon |
| 2 FC | 800 gon |
| 3 FC | 1,200 gon |
| 5 FC | 2,000 gon |
| 10 FC | 4,000 gon |
| 20 FC | 8,000 gon |
| 30 FC | 12,000 gon |
| 40 FC | 16,000 gon |
| 50 FC | 20,000 gon |
| 60 FC | 24,000 gon |
| 70 FC | 28,000 gon |
| 80 FC | 32,000 gon |
| 90 FC | 36,000 gon |
| 100 FC | 40,000 gon |
| 250 FC | 100,000 gon |
| 500 FC | 200,000 gon |
| 750 FC | 300,000 gon |
| 1000 FC | 400,000 gon |
| 10000 FC | 4,000,000 gon |
| 100000 FC | 40,000,000 gon |
规则