放射性是不稳定原子核因辐射失去能量的过程。它以Becquerels（BQ）进行测量。
1 μSv = 0.001 mSv
1 mSv = 1,000 μSv
例子:
将15 Microsievert转换为毫米：
15 μSv = 0.015 mSv
| Microsievert | 毫米 |
|---|---|
| 0.01 μSv | 1.0000e-5 mSv |
| 0.1 μSv | 0 mSv |
| 1 μSv | 0.001 mSv |
| 2 μSv | 0.002 mSv |
| 3 μSv | 0.003 mSv |
| 5 μSv | 0.005 mSv |
| 10 μSv | 0.01 mSv |
| 20 μSv | 0.02 mSv |
| 30 μSv | 0.03 mSv |
| 40 μSv | 0.04 mSv |
| 50 μSv | 0.05 mSv |
| 60 μSv | 0.06 mSv |
| 70 μSv | 0.07 mSv |
| 80 μSv | 0.08 mSv |
| 90 μSv | 0.09 mSv |
| 100 μSv | 0.1 mSv |
| 250 μSv | 0.25 mSv |
| 500 μSv | 0.5 mSv |
| 750 μSv | 0.75 mSv |
| 1000 μSv | 1 mSv |
| 10000 μSv | 10 mSv |
| 100000 μSv | 100 mSv |
规则