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