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 qtr = 1,570.796 mrad
1 mrad = 0.001 qtr
例子:
将15 象限转换为Milliradian：
15 qtr = 23,561.936 mrad
| 象限 | Milliradian |
|---|---|
| 0.01 qtr | 15.708 mrad |
| 0.1 qtr | 157.08 mrad |
| 1 qtr | 1,570.796 mrad |
| 2 qtr | 3,141.592 mrad |
| 3 qtr | 4,712.387 mrad |
| 5 qtr | 7,853.979 mrad |
| 10 qtr | 15,707.958 mrad |
| 20 qtr | 31,415.915 mrad |
| 30 qtr | 47,123.873 mrad |
| 40 qtr | 62,831.831 mrad |
| 50 qtr | 78,539.788 mrad |
| 60 qtr | 94,247.746 mrad |
| 70 qtr | 109,955.704 mrad |
| 80 qtr | 125,663.661 mrad |
| 90 qtr | 141,371.619 mrad |
| 100 qtr | 157,079.577 mrad |
| 250 qtr | 392,698.941 mrad |
| 500 qtr | 785,397.883 mrad |
| 750 qtr | 1,178,096.824 mrad |
| 1000 qtr | 1,570,795.765 mrad |
| 10000 qtr | 15,707,957.651 mrad |
| 100000 qtr | 157,079,576.513 mrad |
规则