Gray is absorbed dose in joules per kilogram.
Gray to Quectogray
Convert Gray (Gy) to Quectogray (qGy) 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.
Quectogray is 1e-30 gray units.
qGy = Gy × 1e+30
Results update instantly for Gray to Quectogray conversions.
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Formula
1 Gray = 1e+30 Quectogray
qGy = Gy × 1e+30
Gy = qGy ÷ 1e+30
Conversion table
| 1 Gy | 1e+30 qGy |
| 2 Gy | 2e+30 qGy |
| 5 Gy | 5e+30 qGy |
| 10 Gy | 1e+31 qGy |
| 20 Gy | 2e+31 qGy |
| 50 Gy | 5e+31 qGy |
| 100 Gy | 1e+32 qGy |
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Frequently asked questions
How many Quectograys are in one Gray?
One Gray equals 1e+30 Quectograys.
How do I convert Gray to Quectogray?
Multiply the number of Grays by 1e+30 to get Quectograys. To go the other way, multiply Quectograys by 1e-30 (or divide by 1e+30) to get Grays.
Is this conversion exact?
Yes. This conversion uses the exact defined relationship between Gray and Quectogray, so the result shown is mathematically precise (rounded only for display).
When is Gray to Quectogray 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 Quectogray 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 = 1e+30 Quectograys (equivalently 1 Quectogray = 1e-30 Grays), so results stay accurate for nuclear medicine, radiation safety, health physics, and scientific research.