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 = 6,350,290 mg
1 mg = 1.5747e-7 st
例子:
将15 石头转换为毫克：
15 st = 95,254,350 mg
| 石头 | 毫克 |
|---|---|
| 0.01 st | 63,502.9 mg |
| 0.1 st | 635,029 mg |
| 1 st | 6,350,290 mg |
| 2 st | 12,700,580 mg |
| 3 st | 19,050,870 mg |
| 5 st | 31,751,450 mg |
| 10 st | 63,502,900 mg |
| 20 st | 127,005,800 mg |
| 30 st | 190,508,700 mg |
| 40 st | 254,011,600 mg |
| 50 st | 317,514,500 mg |
| 60 st | 381,017,400 mg |
| 70 st | 444,520,300 mg |
| 80 st | 508,023,200 mg |
| 90 st | 571,526,100 mg |
| 100 st | 635,029,000 mg |
| 250 st | 1,587,572,500 mg |
| 500 st | 3,175,145,000 mg |
| 750 st | 4,762,717,500 mg |
| 1000 st | 6,350,290,000 mg |
| 10000 st | 63,502,900,000 mg |
| 100000 st | 635,029,000,000 mg |
规则