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 β = 1,000,000,000 nSv
1 nSv = 1.0000e-9 β
例子:
将15 beta颗粒转换为nanosevert：
15 β = 15,000,000,000 nSv
| beta颗粒 | nanosevert |
|---|---|
| 0.01 β | 10,000,000 nSv |
| 0.1 β | 100,000,000 nSv |
| 1 β | 1,000,000,000 nSv |
| 2 β | 2,000,000,000 nSv |
| 3 β | 3,000,000,000 nSv |
| 5 β | 5,000,000,000 nSv |
| 10 β | 10,000,000,000 nSv |
| 20 β | 20,000,000,000 nSv |
| 30 β | 30,000,000,000 nSv |
| 40 β | 40,000,000,000 nSv |
| 50 β | 50,000,000,000 nSv |
| 60 β | 60,000,000,000 nSv |
| 70 β | 70,000,000,000 nSv |
| 80 β | 80,000,000,000 nSv |
| 90 β | 90,000,000,000 nSv |
| 100 β | 100,000,000,000 nSv |
| 250 β | 250,000,000,000 nSv |
| 500 β | 500,000,000,000 nSv |
| 750 β | 750,000,000,000 nSv |
| 1000 β | 1,000,000,000,000 nSv |
| 10000 β | 9,999,999,999,999.998 nSv |
| 100000 β | 99,999,999,999,999.98 nSv |
规则