Convert microsieverts to millisieverts
1 µSv = 0.001 mSv — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
0.001mSv
As a fraction: 1/1000
1 µSv = 0.001 mSv
How to convert microsieverts to millisieverts
Multiply the number of microsieverts by 0.001 to get millisieverts.
The exact factor is 0.001 — as a fraction, 1/1000.
Microsievert to Millisievert conversion table
| Microsieverts (µSv) | Millisieverts (mSv) |
|---|---|
| 1 µSv | 0.001 |
| 2 µSv | 0.002 |
| 3 µSv | 0.003 |
| 5 µSv | 0.005 |
| 10 µSv | 0.01 |
| 20 µSv | 0.02 |
| 25 µSv | 0.025 |
| 50 µSv | 0.05 |
| 100 µSv | 0.1 |
| 250 µSv | 0.25 |
| 500 µSv | 0.5 |
| 1000 µSv | 1 |
Millisievert to Microsievert conversion table
| Millisieverts (mSv) | Microsieverts (µSv) |
|---|---|
| 1 mSv | 1000 |
| 2 mSv | 2000 |
| 3 mSv | 3000 |
| 5 mSv | 5000 |
| 10 mSv | 10 000 |
| 20 mSv | 20 000 |
| 25 mSv | 25 000 |
| 50 mSv | 50 000 |
| 100 mSv | 100 000 |
| 250 mSv | 250 000 |
| 500 mSv | 500 000 |
| 1000 mSv | 1 000 000 |
Frequently asked
How many millisieverts are in a microsievert?
One microsievert equals 0.001 millisieverts (µSv → mSv). That figure is exact, not rounded.
How do you convert microsieverts to millisieverts?
Multiply the number of microsieverts by 0.001 to get millisieverts.
What is 1 mSv in microsieverts?
One millisievert is 1000 microsieverts.
What is 10 µSv in mSv?
10 µSv = 0.01 mSv.