Radiation Equivalent Dose / rem → mSv
Convert Rem to Millisieverts
Convert already-weighted equivalent dose in sieverts and rem. Convert Rem (rem) to Millisieverts (mSv). Find the formula, worked examples, unit definitions, and practical guidance below.
Reverse: Millisieverts to Rem →
How to convert rem to millisieverts
This converts units of an equivalent dose that has already been determined. It does not infer sieverts from grays or estimate individual health risk. Radiation and tissue weighting are not unit factors.
Use x for the value in rem, b for the intermediate value in Sv, and y for the result in mSv.
mSv = rem × 0.01 ÷ 0.001
Worked examples
10 rem ≈ 100 mSv
Step 1: (10 × 0.01) ≈ 0.1 Sv.
Step 2: 0.1 ÷ 0.001 ≈ 100 mSv.20 rem ≈ 200 mSv
Step 1: (20 × 0.01) ≈ 0.2 Sv.
Step 2: 0.2 ÷ 0.001 ≈ 200 mSv.
Results are rounded to 12 significant digits. Converting units does not increase the precision of the original measurement. Very large or small values outside JavaScript’s finite numeric range are rejected.
About Rem
Rem (rem) measures radiation equivalent dose under the conventions above. The base value in Sv is (x × 0.01), where x is the numerical value in rem. Factors shown here are rounded for display; calculations use the stored factor.
About Millisieverts
Millisieverts (mSv) measures radiation equivalent dose under the conventions above. The base value in Sv is (x × 0.001), where x is the numerical value in mSv. Factors shown here are rounded for display; calculations use the stored factor.
Definitions and sources
Carry the same physical assumptions into subsequent physics calculations.
Rem to millisieverts reference table
| Rem (rem) | Millisieverts (mSv) |
|---|---|
| 1 | 10 |
| 5 | 50 |
| 10 | 100 |
| 25 | 250 |
| 50 | 500 |
| 100 | 1000 |
| 1000 | 10000 |
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