Gray is absorbed dose in joules per kilogram.
Gray to Petagray
Convert Gray (Gy) to Petagray (PGy) 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.
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Some unit families need one extra value for a physically accurate result.
Petagray is 1000000000000000 gray units.
PGy = Gy × 1e-15
Results update instantly for Gray to Petagray conversions.
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Formula
1 Gray = 1e-15 Petagray
PGy = Gy × 1e-15
Gy = PGy ÷ 1e-15
Conversion table
| 1 Gy | 1e-15 PGy |
| 2 Gy | 2e-15 PGy |
| 5 Gy | 5e-15 PGy |
| 10 Gy | 1e-14 PGy |
| 20 Gy | 2e-14 PGy |
| 50 Gy | 5e-14 PGy |
| 100 Gy | 1e-13 PGy |
Related conversions
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Frequently asked questions
How many Petagrays are in one Gray?
One Gray equals 1e-15 Petagrays.
How do I convert Gray to Petagray?
Multiply the number of Grays by 1e-15 to get Petagrays. To go the other way, multiply Petagrays by 1e+15 (or divide by 1e-15) to get Grays.
Is this conversion exact?
Yes. This conversion uses the exact defined relationship between Gray and Petagray, so the result shown is mathematically precise (rounded only for display).
When is Gray to Petagray 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 Petagray 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-15 Petagrays (equivalently 1 Petagray = 1e+15 Grays), so results stay accurate for nuclear medicine, radiation safety, health physics, and scientific research.