Converter group
Radiology Converters
Radiation - Absorbed Dose Converter
Result
... Rad = ... Millirad
Find the units to convert
Rad to Millirad Converter
Use this page to convert rad values into millirad, with background details, formulas, a worked example, and a quick conversion table.
Conversion formula
1 rad = 1,000 mrad
1 mrad = 0.001 rad
Example: 1 rad = 1,000 mrad
Rad
Defined as the absorption of 100 ergs of energy per gram of matter, equal to 0.01 gray.
History: Acronym for Radiation Absorbed Dose. Established in 1953 as a replacement for the roentgen.
Current use: Still frequently used in the United States, though officially discouraged in favor of the gray.
Also written as rad, rads.
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.
Rad to Millirad table
| Rad [rad] | Millirad [mrad] |
|---|---|
| 0.01 rad | 10 mrad |
| 0.1 rad | 100 mrad |
| 1 rad | 1,000 mrad |
| 2 rad | 2,000 mrad |
| 5 rad | 5,000 mrad |
| 10 rad | 10,000 mrad |
| 20 rad | 20,000 mrad |
| 50 rad | 50,000 mrad |
| 100 rad | 100,000 mrad |
Frequently asked questions
How many Millirad (mrad) are in one Rad (rad)?
One Rad equals 1,000 Millirad.
How do you convert Rad to Millirad?
Multiply the Rad value by 1,000 to get the result in Millirad.
How do you convert Millirad back to Rad?
Multiply the Millirad value by 0.001 to get back to Rad.
What is 1 Rad in Millirad?
1 Rad equals 1,000 Millirad.