Rem is 0.01 sievert.
Rem to Millisievert
Convert Rem (rem) to Millisievert (mSv) instantly. Free online radiation converter with formulas, tables and examples.
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Radiation Converter
Convert radioactivity, absorbed dose, and equivalent dose units by compatible radiation family.
Context values
Some unit families need one extra value for a physically accurate result.
Millisievert is 0.001 sievert units.
mSv = rem × 10
Results update instantly for Rem to Millisievert conversions.
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Formula
1 Rem = 10 Millisievert
mSv = rem × 10
rem = mSv ÷ 10
Conversion table
| 1 rem | 10 mSv |
| 2 rem | 20 mSv |
| 5 rem | 50 mSv |
| 10 rem | 100 mSv |
| 20 rem | 200 mSv |
| 50 rem | 500 mSv |
| 100 rem | 1000 mSv |
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Frequently asked questions
How many Millisieverts are in one Rem?
One Rem equals 10 Millisieverts.
How do I convert Rem to Millisievert?
Multiply the number of Rems by 10 to get Millisieverts. To go the other way, multiply Millisieverts by 0.1 (or divide by 10) to get Rems.
Is this conversion exact?
Yes. This conversion uses the exact defined relationship between Rem and Millisievert, so the result shown is mathematically precise (rounded only for display).
When is Rem to Millisievert conversion commonly used?
It is commonly used in nuclear medicine, radiation safety, health physics, and scientific research involving radioactivity and radiation dose.
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About this conversion
Rem and Millisievert are units used in the radiation family of measurements. Both units measure equivalent radiation dose (biological risk-weighted dose). This converter uses the precise relationship 1 Rem = 10 Millisieverts (equivalently 1 Millisievert = 0.1 Rems), so results stay accurate for nuclear medicine, radiation safety, health physics, and scientific research.