Converter group

Radiology Converters

Radiation - Absorbed Dose Converter

Value

From

Result

... Hectogray = ... Milligray

Result

... Hectogray

... Milligray

Value

FromTo

From Unit:

To Unit:

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

1 hGy = 100,000 mGy

1 mGy = 0.00001 hGy

Example: 1 hGy = 100,000 mGy

One hectogray is 100 grays.

History: SI prefix hecto- applied to the gray.

Current use: Rarely used metric variant.

Also written as hGy.

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.