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 st = 1 st
1 st = 1 st
例子:
将15 石头转换为石头：
15 st = 15 st
| 石头 | 石头 |
|---|---|
| 0.01 st | 0.01 st |
| 0.1 st | 0.1 st |
| 1 st | 1 st |
| 2 st | 2 st |
| 3 st | 3 st |
| 5 st | 5 st |
| 10 st | 10 st |
| 20 st | 20 st |
| 30 st | 30 st |
| 40 st | 40 st |
| 50 st | 50 st |
| 60 st | 60 st |
| 70 st | 70 st |
| 80 st | 80 st |
| 90 st | 90 st |
| 100 st | 100 st |
| 250 st | 250 st |
| 500 st | 500 st |
| 750 st | 750 st |
| 1000 st | 1,000 st |
| 10000 st | 10,000 st |
| 100000 st | 100,000 st |
规则