Rad is 0.01 gray.
Rad to Gray
Convert Rad (rad) to Gray (Gy) 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.
Gray is absorbed dose in joules per kilogram.
Gy = rad × 0.01
Results update instantly for Rad to Gray conversions.
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Formula
1 Rad = 0.01 Gray
Gy = rad × 0.01
rad = Gy ÷ 0.01
Conversion table
| 1 rad | 0.01 Gy |
| 2 rad | 0.02 Gy |
| 5 rad | 0.05 Gy |
| 10 rad | 0.1 Gy |
| 20 rad | 0.2 Gy |
| 50 rad | 0.5 Gy |
| 100 rad | 1 Gy |
Related conversions
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Frequently asked questions
How many Grays are in one Rad?
One Rad equals 0.01 Grays.
How do I convert Rad to Gray?
Multiply the number of Rads by 0.01 to get Grays. To go the other way, multiply Grays by 100 (or divide by 0.01) to get Rads.
Is this conversion exact?
Yes. This conversion uses the exact defined relationship between Rad and Gray, so the result shown is mathematically precise (rounded only for display).
When is Rad to Gray 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 Gray are units used in the radiation family of measurements. Both units measure absorbed radiation dose (energy deposited per unit mass). This converter uses the precise relationship 1 Rad = 0.01 Grays (equivalently 1 Gray = 100 Rads), so results stay accurate for nuclear medicine, radiation safety, health physics, and scientific research.