Millisievert is 0.001 sievert units.
Millisievert to Sievert
Convert Millisievert (mSv) to Sievert (Sv) 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.
Sievert is equivalent dose.
Sv = mSv × 0.001
Results update instantly for Millisievert to Sievert conversions.
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Formula
1 Millisievert = 0.001 Sievert
Sv = mSv × 0.001
mSv = Sv ÷ 0.001
Conversion table
| 1 mSv | 0.001 Sv |
| 2 mSv | 0.002 Sv |
| 5 mSv | 0.005 Sv |
| 10 mSv | 0.01 Sv |
| 20 mSv | 0.02 Sv |
| 50 mSv | 0.05 Sv |
| 100 mSv | 0.1 Sv |
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Frequently asked questions
How many Sieverts are in one Millisievert?
One Millisievert equals 0.001 Sieverts.
How do I convert Millisievert to Sievert?
Multiply the number of Millisieverts by 0.001 to get Sieverts. To go the other way, multiply Sieverts by 1000 (or divide by 0.001) to get Millisieverts.
Is this conversion exact?
Yes. This conversion uses the exact defined relationship between Millisievert and Sievert, so the result shown is mathematically precise (rounded only for display).
When is Millisievert to Sievert 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
Millisievert and Sievert 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 Millisievert = 0.001 Sieverts (equivalently 1 Sievert = 1000 Millisieverts), so results stay accurate for nuclear medicine, radiation safety, health physics, and scientific research.