Converter group
Radiology Converters
Radiation - Absorbed Dose Converter
Result
... Millirad = ... Gray
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Millirad to Gray Converter
Use this page to convert millirad values into gray, with background details, formulas, a worked example, and a quick conversion table.
Conversion formula
1 mrad = 0.00001 Gy
1 Gy = 100,000 mrad
Example: 1 mrad = 0.00001 Gy
Millirad
One millirad is equal to 0.001 rads or 0.00001 gray.
History: Standard prefix applied to the rad.
Current use: Found in older US medical and industrial radiation records.
Also written as mrad, millirads.
Gray
Defined as the absorption of one joule of radiation energy per kilogram of matter.
History: Named after Louis Harold Gray, a pioneer in the field of radiobiology. Adopted by the CGPM in 1975.
Current use: The primary international unit used in radiotherapy, radiation protection, and radiobiology.
Also written as Gy, grays.
Millirad to Gray table
| Millirad [mrad] | Gray [Gy] |
|---|---|
| 0.01 mrad | 0.0000001 Gy |
| 0.1 mrad | 0.000001 Gy |
| 1 mrad | 0.00001 Gy |
| 2 mrad | 0.00002 Gy |
| 5 mrad | 0.00005 Gy |
| 10 mrad | 0.0001 Gy |
| 20 mrad | 0.0002 Gy |
| 50 mrad | 0.0005 Gy |
| 100 mrad | 0.001 Gy |
Frequently asked questions
How many Gray (Gy) are in one Millirad (mrad)?
One Millirad equals 0.00001 Gray.
How do you convert Millirad to Gray?
Multiply the Millirad value by 0.00001 to get the result in Gray.
How do you convert Gray back to Millirad?
Multiply the Gray value by 100,000 to get back to Millirad.
What is 1 Millirad in Gray?
1 Millirad equals 0.00001 Gray.