Millisievert is 0.001 sievert units.
Millisievert to Attogray
Convert Millisievert (mSv) to Attogray (aGy) instantly. Free online radiation converter with formulas, tables and examples.
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Convert radioactivity, absorbed dose, and equivalent dose units by compatible radiation family.
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Attogray is 1e-18 gray units.
aGy = mSv × 1e+15
Results update instantly for Millisievert to Attogray conversions.
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Formula
1 Millisievert = 1e+15 Attogray
aGy = mSv × 1e+15
mSv = aGy ÷ 1e+15
Conversion table
| 1 mSv | 1e+15 aGy |
| 2 mSv | 2e+15 aGy |
| 5 mSv | 5e+15 aGy |
| 10 mSv | 1e+16 aGy |
| 20 mSv | 2e+16 aGy |
| 50 mSv | 5e+16 aGy |
| 100 mSv | 1e+17 aGy |
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Frequently asked questions
How many Attograys are in one Millisievert?
One Millisievert equals 1e+15 Attograys.
How do I convert Millisievert to Attogray?
Multiply the number of Millisieverts by 1e+15 to get Attograys. To go the other way, multiply Attograys by 1e-15 (or divide by 1e+15) to get Millisieverts.
Is this conversion exact?
Yes. This conversion uses the exact defined relationship between Millisievert and Attogray, so the result shown is mathematically precise (rounded only for display).
When is Millisievert to Attogray 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 Attogray are units used in the radiation family of measurements. Millisievert measures equivalent radiation dose (biological risk-weighted dose), while Attogray 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 Millisievert = 1e+15 Attograys (equivalently 1 Attogray = 1e-15 Millisieverts), so results stay accurate for nuclear medicine, radiation safety, health physics, and scientific research.