Sievert is equivalent dose.
Sievert to Attogray
Convert Sievert (Sv) 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 = Sv × 1e+18
Results update instantly for Sievert to Attogray conversions.
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Formula
1 Sievert = 1e+18 Attogray
aGy = Sv × 1e+18
Sv = aGy ÷ 1e+18
Conversion table
| 1 Sv | 1e+18 aGy |
| 2 Sv | 2e+18 aGy |
| 5 Sv | 5e+18 aGy |
| 10 Sv | 1e+19 aGy |
| 20 Sv | 2e+19 aGy |
| 50 Sv | 5e+19 aGy |
| 100 Sv | 1e+20 aGy |
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Frequently asked questions
How many Attograys are in one Sievert?
One Sievert equals 1e+18 Attograys.
How do I convert Sievert to Attogray?
Multiply the number of Sieverts by 1e+18 to get Attograys. To go the other way, multiply Attograys by 1e-18 (or divide by 1e+18) to get Sieverts.
Is this conversion exact?
Yes. This conversion uses the exact defined relationship between Sievert and Attogray, so the result shown is mathematically precise (rounded only for display).
When is Sievert 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
Sievert and Attogray are units used in the radiation family of measurements. Sievert 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 Sievert = 1e+18 Attograys (equivalently 1 Attogray = 1e-18 Sieverts), so results stay accurate for nuclear medicine, radiation safety, health physics, and scientific research.