Sievert is equivalent dose.
Sievert to Milligray
Convert Sievert (Sv) to Milligray (mGy) 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.
Milligray is 0.001 gray units.
mGy = Sv × 1000
Results update instantly for Sievert to Milligray conversions.
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Formula
1 Sievert = 1000 Milligray
mGy = Sv × 1000
Sv = mGy ÷ 1000
Conversion table
| 1 Sv | 1000 mGy |
| 2 Sv | 2000 mGy |
| 5 Sv | 5000 mGy |
| 10 Sv | 10000 mGy |
| 20 Sv | 20000 mGy |
| 50 Sv | 50000 mGy |
| 100 Sv | 100000 mGy |
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Frequently asked questions
How many Milligrays are in one Sievert?
One Sievert equals 1000 Milligrays.
How do I convert Sievert to Milligray?
Multiply the number of Sieverts by 1000 to get Milligrays. To go the other way, multiply Milligrays 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 Milligray, so the result shown is mathematically precise (rounded only for display).
When is Sievert to Milligray 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 Milligray are units used in the radiation family of measurements. Sievert measures equivalent radiation dose (biological risk-weighted dose), while Milligray measures absorbed radiation dose (energy deposited per unit mass). This page provides the direct numeric ratio between the two units. This converter uses the precise relationship 1 Sievert = 1000 Milligrays (equivalently 1 Milligray = 0.001 Sieverts), so results stay accurate for nuclear medicine, radiation safety, health physics, and scientific research.