Convert Millisieverts to Megasieverts
Convert Millisieverts (mSv) to Megasieverts (MSv) instantly and accurately.
Conversion Formula
MSv = mSv × 1.000000000e-9
About Millisieverts
The millisievert (mSv) equals 10⁻³ Sv and is the primary international radiation protection unit. ICRP 103 occupational limit 20 mSv/year averaged over 5 years; worldwide average background ~2.4 mSv/year; abdominal CT ~10 mSv; EU medical exposure directive and IAEA dose limits are quoted in mSv. 1 mSv = 10⁻³ Sv = 100 mrem.
About Megasieverts
The megasievert (MSv) equals 10⁶ Sv. Entirely theoretical for biological contexts - severe radiation damage occurs well below 1 MSv. Appears in materials science modelling of extreme radiation environments, theoretical nuclear detonation effects at point of burst, and advanced reactor pressure vessel damage accumulation calculations. 1 MSv = 10⁶ Sv = 10⁸ rem.
Quick Reference Table
| Millisieverts (mSv) | Megasieverts (MSv) |
|---|---|
| 1 mSv | 1 × 10-9 MSv |
| 2 mSv | 2 × 10-9 MSv |
| 5 mSv | 5 × 10-9 MSv |
| 10 mSv | 1 × 10-8 MSv |
| 25 mSv | 2.5 × 10-8 MSv |
| 50 mSv | 5 × 10-8 MSv |
| 100 mSv | 1 × 10-7 MSv |