Attogray is 1e-18 gray units.
Attogray to Sievert
Convert Attogray (aGy) 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 = aGy × 1e-18
Results update instantly for Attogray to Sievert conversions.
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Formula
1 Attogray = 1e-18 Sievert
Sv = aGy × 1e-18
aGy = Sv ÷ 1e-18
Conversion table
| 1 aGy | 1e-18 Sv |
| 2 aGy | 2e-18 Sv |
| 5 aGy | 5e-18 Sv |
| 10 aGy | 1e-17 Sv |
| 20 aGy | 2e-17 Sv |
| 50 aGy | 5e-17 Sv |
| 100 aGy | 1e-16 Sv |
Related conversions
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Frequently asked questions
How many Sieverts are in one Attogray?
One Attogray equals 1e-18 Sieverts.
How do I convert Attogray to Sievert?
Multiply the number of Attograys by 1e-18 to get Sieverts. To go the other way, multiply Sieverts by 1e+18 (or divide by 1e-18) to get Attograys.
Is this conversion exact?
Yes. This conversion uses the exact defined relationship between Attogray and Sievert, so the result shown is mathematically precise (rounded only for display).
When is Attogray 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
Attogray and Sievert are units used in the radiation family of measurements. Attogray measures absorbed radiation dose (energy deposited per unit mass), while Sievert measures equivalent radiation dose (biological risk-weighted dose). This page provides the direct numeric ratio between the two units. This converter uses the precise relationship 1 Attogray = 1e-18 Sieverts (equivalently 1 Sievert = 1e+18 Attograys), so results stay accurate for nuclear medicine, radiation safety, health physics, and scientific research.