Converter group
Radiology Converters
Radiation - Absorbed Dose Converter
Result
... Gray = ... Millirad
Find the units to convert
Gray to Millirad Converter
Use this page to convert gray values into millirad, with background details, formulas, a worked example, and a quick conversion table.
Conversion formula
1 Gy = 100,000 mrad
1 mrad = 0.00001 Gy
Example: 1 Gy = 100,000 mrad
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
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 to Millirad table
| Gray [Gy] | Millirad [mrad] |
|---|---|
| 0.01 Gy | 1,000 mrad |
| 0.1 Gy | 10,000 mrad |
| 1 Gy | 100,000 mrad |
| 2 Gy | 200,000 mrad |
| 5 Gy | 500,000 mrad |
| 10 Gy | 1,000,000 mrad |
| 20 Gy | 2,000,000 mrad |
| 50 Gy | 5,000,000 mrad |
| 100 Gy | 10,000,000 mrad |
Frequently asked questions
How many Millirad (mrad) are in one Gray (Gy)?
One Gray equals 100,000 Millirad.
How do you convert Gray to Millirad?
Multiply the Gray value by 100,000 to get the result in Millirad.
How do you convert Millirad back to Gray?
Multiply the Millirad value by 0.00001 to get back to Gray.
What is 1 Gray in Millirad?
1 Gray equals 100,000 Millirad.