Megagray is 1000000 gray units.
Megagray to Sievert
Convert Megagray (MGy) to Sievert (Sv) 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.
Sievert is equivalent dose.
Sv = MGy × 1e+6
Results update instantly for Megagray to Sievert conversions.
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Formula
1 Megagray = 1e+6 Sievert
Sv = MGy × 1e+6
MGy = Sv ÷ 1e+6
Conversion table
| 1 MGy | 1e+6 Sv |
| 2 MGy | 2e+6 Sv |
| 5 MGy | 5e+6 Sv |
| 10 MGy | 1e+7 Sv |
| 20 MGy | 2e+7 Sv |
| 50 MGy | 5e+7 Sv |
| 100 MGy | 1e+8 Sv |
Related conversions
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Frequently asked questions
How many Sieverts are in one Megagray?
One Megagray equals 1e+6 Sieverts.
How do I convert Megagray to Sievert?
Multiply the number of Megagrays by 1e+6 to get Sieverts. To go the other way, multiply Sieverts by 1e-6 (or divide by 1e+6) to get Megagrays.
Is this conversion exact?
Yes. This conversion uses the exact defined relationship between Megagray and Sievert, so the result shown is mathematically precise (rounded only for display).
When is Megagray to Sievert 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
Megagray and Sievert are units used in the radiation family of measurements. Megagray measures absorbed radiation dose (energy deposited per unit mass), while Sievert measures equivalent radiation dose (biological risk-weighted dose). This page provides the direct numeric ratio between the two units. This converter uses the precise relationship 1 Megagray = 1e+6 Sieverts (equivalently 1 Sievert = 1e-6 Megagrays), so results stay accurate for nuclear medicine, radiation safety, health physics, and scientific research.