La massa è la quantità di materia presente in un corpo fisico.
1 mt = 5,000,000 ct 
1 ct = 2.0000e-7 mt 
Esempio: 
Convert 15 Tonnellata metrica in Carati:
15 mt = 75,000,000 ct 
| Tonnellata metrica | Carati | 
|---|---|
| 0.01 mt | 50,000 ct | 
| 0.1 mt | 500,000 ct | 
| 1 mt | 5,000,000 ct | 
| 2 mt | 10,000,000 ct | 
| 3 mt | 15,000,000 ct | 
| 5 mt | 25,000,000 ct | 
| 10 mt | 50,000,000 ct | 
| 20 mt | 100,000,000 ct | 
| 30 mt | 150,000,000 ct | 
| 40 mt | 200,000,000 ct | 
| 50 mt | 250,000,000 ct | 
| 60 mt | 300,000,000 ct | 
| 70 mt | 350,000,000 ct | 
| 80 mt | 400,000,000 ct | 
| 90 mt | 450,000,000 ct | 
| 100 mt | 500,000,000 ct | 
| 250 mt | 1,250,000,000 ct | 
| 500 mt | 2,500,000,000 ct | 
| 750 mt | 3,750,000,000 ct | 
| 1000 mt | 5,000,000,000 ct | 
| 10000 mt | 50,000,000,000 ct | 
| 100000 mt | 500,000,000,000 ct |