Angle is a measure of rotation between two intersecting lines or surfaces. It is measured in degrees (°) or radians (rad).
1 TEC = 0.375 FC 
1 FC = 2.667 TEC 
उदाहरण: 
कन्वर्ट 15 Three Eighth Circle से Full Circle:
15 TEC = 5.625 FC 
| Three Eighth Circle | Full Circle | 
|---|---|
| 0.01 TEC | 0.004 FC | 
| 0.1 TEC | 0.038 FC | 
| 1 TEC | 0.375 FC | 
| 2 TEC | 0.75 FC | 
| 3 TEC | 1.125 FC | 
| 5 TEC | 1.875 FC | 
| 10 TEC | 3.75 FC | 
| 20 TEC | 7.5 FC | 
| 30 TEC | 11.25 FC | 
| 40 TEC | 15 FC | 
| 50 TEC | 18.75 FC | 
| 60 TEC | 22.5 FC | 
| 70 TEC | 26.25 FC | 
| 80 TEC | 30 FC | 
| 90 TEC | 33.75 FC | 
| 100 TEC | 37.5 FC | 
| 250 TEC | 93.75 FC | 
| 500 TEC | 187.5 FC | 
| 750 TEC | 281.25 FC | 
| 1000 TEC | 375 FC | 
| 10000 TEC | 3,750 FC | 
| 100000 TEC | 37,500 FC |