Convert Rems to Millisieverts
Convert Rems (rem) to Millisieverts (mSv) instantly and accurately.
Conversion Formula
mSv = rem × 10
About Rems
The rem (roentgen equivalent man) equals exactly 0.01 Sv = 1 cSv. The pre-SI unit of equivalent dose, still dominant in US regulation: NRC occupational whole-body limit 5 rem/year; 10 CFR Part 20 exposure limits cited in rem; US military personnel dose records maintained in rem. 1 rem = 0.01 Sv = 1 cSv.
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.
Quick Reference Table
| Rems (rem) | Millisieverts (mSv) |
|---|---|
| 1 rem | 10 mSv |
| 2 rem | 20 mSv |
| 5 rem | 50 mSv |
| 10 rem | 100 mSv |
| 25 rem | 250 mSv |
| 50 rem | 500 mSv |
| 100 rem | 1000 mSv |