Rad is 0.01 gray.
Rad to Zeptosievert
Convert Rad (rad) to Zeptosievert (zSv) 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.
Zeptosievert is 1e-21 sievert units.
zSv = rad × 1e+19
Results update instantly for Rad to Zeptosievert conversions.
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Formula
1 Rad = 1e+19 Zeptosievert
zSv = rad × 1e+19
rad = zSv ÷ 1e+19
Conversion table
| 1 rad | 1e+19 zSv |
| 2 rad | 2e+19 zSv |
| 5 rad | 5e+19 zSv |
| 10 rad | 1e+20 zSv |
| 20 rad | 2e+20 zSv |
| 50 rad | 5e+20 zSv |
| 100 rad | 1e+21 zSv |
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Frequently asked questions
How many Zeptosieverts are in one Rad?
One Rad equals 1e+19 Zeptosieverts.
How do I convert Rad to Zeptosievert?
Multiply the number of Rads by 1e+19 to get Zeptosieverts. To go the other way, multiply Zeptosieverts by 1e-19 (or divide by 1e+19) to get Rads.
Is this conversion exact?
Yes. This conversion uses the exact defined relationship between Rad and Zeptosievert, so the result shown is mathematically precise (rounded only for display).
When is Rad to Zeptosievert 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
Rad and Zeptosievert are units used in the radiation family of measurements. Rad measures absorbed radiation dose (energy deposited per unit mass), while Zeptosievert 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 Rad = 1e+19 Zeptosieverts (equivalently 1 Zeptosievert = 1e-19 Rads), so results stay accurate for nuclear medicine, radiation safety, health physics, and scientific research.