Gray is absorbed dose in joules per kilogram.
Gray to Centigray
Convert Gray (Gy) to Centigray (cGy) 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.
Centigray is 0.01 gray units.
cGy = Gy × 100
Results update instantly for Gray to Centigray conversions.
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Formula
1 Gray = 100 Centigray
cGy = Gy × 100
Gy = cGy ÷ 100
Conversion table
| 1 Gy | 100 cGy |
| 2 Gy | 200 cGy |
| 5 Gy | 500 cGy |
| 10 Gy | 1000 cGy |
| 20 Gy | 2000 cGy |
| 50 Gy | 5000 cGy |
| 100 Gy | 10000 cGy |
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Frequently asked questions
How many Centigrays are in one Gray?
One Gray equals 100 Centigrays.
How do I convert Gray to Centigray?
Multiply the number of Grays by 100 to get Centigrays. To go the other way, multiply Centigrays by 0.01 (or divide by 100) to get Grays.
Is this conversion exact?
Yes. This conversion uses the exact defined relationship between Gray and Centigray, so the result shown is mathematically precise (rounded only for display).
When is Gray to Centigray 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
Gray and Centigray 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 Gray = 100 Centigrays (equivalently 1 Centigray = 0.01 Grays), so results stay accurate for nuclear medicine, radiation safety, health physics, and scientific research.