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 = 57.296 crad
1 crad = 0.017 FC
例子:
将15 完整的圆圈转换为圆形弧度：
15 FC = 859.436 crad
| 完整的圆圈 | 圆形弧度 |
|---|---|
| 0.01 FC | 0.573 crad |
| 0.1 FC | 5.73 crad |
| 1 FC | 57.296 crad |
| 2 FC | 114.591 crad |
| 3 FC | 171.887 crad |
| 5 FC | 286.479 crad |
| 10 FC | 572.957 crad |
| 20 FC | 1,145.915 crad |
| 30 FC | 1,718.872 crad |
| 40 FC | 2,291.829 crad |
| 50 FC | 2,864.787 crad |
| 60 FC | 3,437.744 crad |
| 70 FC | 4,010.702 crad |
| 80 FC | 4,583.659 crad |
| 90 FC | 5,156.616 crad |
| 100 FC | 5,729.574 crad |
| 250 FC | 14,323.934 crad |
| 500 FC | 28,647.868 crad |
| 750 FC | 42,971.803 crad |
| 1000 FC | 57,295.737 crad |
| 10000 FC | 572,957.367 crad |
| 100000 FC | 5,729,573.672 crad |
规则