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