Gray is absorbed dose in joules per kilogram.
Gray to Nanogray
Convert Gray (Gy) to Nanogray (nGy) instantly. Free online radiation converter with formulas, tables and examples.
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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.
Nanogray is 1e-9 gray units.
nGy = Gy × 1e+9
Results update instantly for Gray to Nanogray conversions.
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Formula
1 Gray = 1e+9 Nanogray
nGy = Gy × 1e+9
Gy = nGy ÷ 1e+9
Conversion table
| 1 Gy | 1e+9 nGy |
| 2 Gy | 2e+9 nGy |
| 5 Gy | 5e+9 nGy |
| 10 Gy | 1e+10 nGy |
| 20 Gy | 2e+10 nGy |
| 50 Gy | 5e+10 nGy |
| 100 Gy | 1e+11 nGy |
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Frequently asked questions
How many Nanograys are in one Gray?
One Gray equals 1e+9 Nanograys.
How do I convert Gray to Nanogray?
Multiply the number of Grays by 1e+9 to get Nanograys. To go the other way, multiply Nanograys by 1e-9 (or divide by 1e+9) to get Grays.
Is this conversion exact?
Yes. This conversion uses the exact defined relationship between Gray and Nanogray, so the result shown is mathematically precise (rounded only for display).
When is Gray to Nanogray 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 Nanogray 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+9 Nanograys (equivalently 1 Nanogray = 1e-9 Grays), so results stay accurate for nuclear medicine, radiation safety, health physics, and scientific research.