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 = 6.35 kg
1 kg = 0.157 st
例子:
将15 石头转换为公斤：
15 st = 95.254 kg
| 石头 | 公斤 |
|---|---|
| 0.01 st | 0.064 kg |
| 0.1 st | 0.635 kg |
| 1 st | 6.35 kg |
| 2 st | 12.701 kg |
| 3 st | 19.051 kg |
| 5 st | 31.751 kg |
| 10 st | 63.503 kg |
| 20 st | 127.006 kg |
| 30 st | 190.509 kg |
| 40 st | 254.012 kg |
| 50 st | 317.515 kg |
| 60 st | 381.017 kg |
| 70 st | 444.52 kg |
| 80 st | 508.023 kg |
| 90 st | 571.526 kg |
| 100 st | 635.029 kg |
| 250 st | 1,587.573 kg |
| 500 st | 3,175.145 kg |
| 750 st | 4,762.718 kg |
| 1000 st | 6,350.29 kg |
| 10000 st | 63,502.9 kg |
| 100000 st | 635,029 kg |
规则