Sievert is equivalent dose.
Sievert to Millisievert
Convert Sievert (Sv) 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 = Sv × 1000
Results update instantly for Sievert to Millisievert conversions.
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Formula
1 Sievert = 1000 Millisievert
mSv = Sv × 1000
Sv = mSv ÷ 1000
Conversion table
| 1 Sv | 1000 mSv |
| 2 Sv | 2000 mSv |
| 5 Sv | 5000 mSv |
| 10 Sv | 10000 mSv |
| 20 Sv | 20000 mSv |
| 50 Sv | 50000 mSv |
| 100 Sv | 100000 mSv |
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Frequently asked questions
How many Millisieverts are in one Sievert?
One Sievert equals 1000 Millisieverts.
How do I convert Sievert to Millisievert?
Multiply the number of Sieverts by 1000 to get Millisieverts. To go the other way, multiply Millisieverts by 0.001 (or divide by 1000) to get Sieverts.
Is this conversion exact?
Yes. This conversion uses the exact defined relationship between Sievert and Millisievert, so the result shown is mathematically precise (rounded only for display).
When is Sievert 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
Sievert 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 Sievert = 1000 Millisieverts (equivalently 1 Millisievert = 0.001 Sieverts), so results stay accurate for nuclear medicine, radiation safety, health physics, and scientific research.