Converter group

Radiology Converters

Radiation - Absorbed Dose Converter

Value

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Result

... Gigagray = ... Milligray

Result

... Gigagray

... Milligray

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From Unit:

To Unit:

Use this page to convert gigagray values into milligray, with background details, formulas, a worked example, and a quick conversion table.

1 GGy = 1,000,000,000,000 mGy

1 mGy = 0.000000000001 GGy

Example: 1 GGy = 1,000,000,000,000 mGy

One gigagray is 1,000,000,000 grays.

History: SI prefix giga- applied to the gray.

Current use: Rarely used outside of highly specialized nuclear research.

Also written as GGy.

One milligray is equal to 0.001 grays.

History: Standard SI prefix applied to the gray.

Current use: Commonly used in diagnostic radiology to express patient doses (e.g., CT scans).

Also written as mGy, milligrays.