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