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 QC = 2 oct
1 oct = 0.5 QC
例子:
将15 四分之一圈转换为八分之一：
15 QC = 30 oct
| 四分之一圈 | 八分之一 |
|---|---|
| 0.01 QC | 0.02 oct |
| 0.1 QC | 0.2 oct |
| 1 QC | 2 oct |
| 2 QC | 4 oct |
| 3 QC | 6 oct |
| 5 QC | 10 oct |
| 10 QC | 20 oct |
| 20 QC | 40 oct |
| 30 QC | 60 oct |
| 40 QC | 80 oct |
| 50 QC | 100 oct |
| 60 QC | 120 oct |
| 70 QC | 140 oct |
| 80 QC | 160 oct |
| 90 QC | 180 oct |
| 100 QC | 200 oct |
| 250 QC | 500 oct |
| 500 QC | 1,000 oct |
| 750 QC | 1,500 oct |
| 1000 QC | 2,000 oct |
| 10000 QC | 20,000 oct |
| 100000 QC | 200,000 oct |
规则