El ángulo es una medida de rotación entre dos líneas o superficies de intersección.Se mide en grados (°) o radianes (rad).
1 TC = 19.099 crad 
1 crad = 0.052 TC 
Ejemplo: 
Convertir 15 Tercer círculo a Radiano circular:
15 TC = 286.479 crad 
| Tercer círculo | Radiano circular | 
|---|---|
| 0.01 TC | 0.191 crad | 
| 0.1 TC | 1.91 crad | 
| 1 TC | 19.099 crad | 
| 2 TC | 38.197 crad | 
| 3 TC | 57.296 crad | 
| 5 TC | 95.493 crad | 
| 10 TC | 190.986 crad | 
| 20 TC | 381.972 crad | 
| 30 TC | 572.957 crad | 
| 40 TC | 763.943 crad | 
| 50 TC | 954.929 crad | 
| 60 TC | 1,145.915 crad | 
| 70 TC | 1,336.901 crad | 
| 80 TC | 1,527.886 crad | 
| 90 TC | 1,718.872 crad | 
| 100 TC | 1,909.858 crad | 
| 250 TC | 4,774.645 crad | 
| 500 TC | 9,549.289 crad | 
| 750 TC | 14,323.934 crad | 
| 1000 TC | 19,098.579 crad | 
| 10000 TC | 190,985.789 crad | 
| 100000 TC | 1,909,857.891 crad |