Milligray is 0.001 gray units.
Milligray to Gray
Convert Milligray (mGy) 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 = mGy × 0.001
Results update instantly for Milligray to Gray conversions.
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Formula
1 Milligray = 0.001 Gray
Gy = mGy × 0.001
mGy = Gy ÷ 0.001
Conversion table
| 1 mGy | 0.001 Gy |
| 2 mGy | 0.002 Gy |
| 5 mGy | 0.005 Gy |
| 10 mGy | 0.01 Gy |
| 20 mGy | 0.02 Gy |
| 50 mGy | 0.05 Gy |
| 100 mGy | 0.1 Gy |
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Frequently asked questions
How many Grays are in one Milligray?
One Milligray equals 0.001 Grays.
How do I convert Milligray to Gray?
Multiply the number of Milligrays by 0.001 to get Grays. To go the other way, multiply Grays by 1000 (or divide by 0.001) to get Milligrays.
Is this conversion exact?
Yes. This conversion uses the exact defined relationship between Milligray and Gray, so the result shown is mathematically precise (rounded only for display).
When is Milligray 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
Milligray 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 Milligray = 0.001 Grays (equivalently 1 Gray = 1000 Milligrays), so results stay accurate for nuclear medicine, radiation safety, health physics, and scientific research.