质量是物理中物质的数量。它是物质的基本特性，以千克（kg）进行测量。
1 dwt = 7.776 ct
1 ct = 0.129 dwt
例子:
将15 轻量级转换为克拉：
15 dwt = 116.638 ct
| 轻量级 | 克拉 |
|---|---|
| 0.01 dwt | 0.078 ct |
| 0.1 dwt | 0.778 ct |
| 1 dwt | 7.776 ct |
| 2 dwt | 15.552 ct |
| 3 dwt | 23.328 ct |
| 5 dwt | 38.879 ct |
| 10 dwt | 77.759 ct |
| 20 dwt | 155.517 ct |
| 30 dwt | 233.276 ct |
| 40 dwt | 311.035 ct |
| 50 dwt | 388.793 ct |
| 60 dwt | 466.552 ct |
| 70 dwt | 544.311 ct |
| 80 dwt | 622.07 ct |
| 90 dwt | 699.828 ct |
| 100 dwt | 777.587 ct |
| 250 dwt | 1,943.967 ct |
| 500 dwt | 3,887.935 ct |
| 750 dwt | 5,831.902 ct |
| 1000 dwt | 7,775.869 ct |
| 10000 dwt | 77,758.692 ct |
| 100000 dwt | 777,586.92 ct |
规则