Convert Milliroentgen to Millirad
Convert milliroentgens to millirads by entering a value below.
How to Convert Milliroentgens to Millirads
The milliroentgen and millirad are both units of radiation dose. 1 millirad equals 1.1402508552 milliroentgens. This means to convert milliroentgens to millirads, you divide by 1.1402508552.
Formula
Step-by-Step Example
Convert 5 mR to millirads:
We need to convert milliroentgens to millirads
Since 1 mrad = 1.1402508552 mR, divide by 1.1402508552
5 ÷ 1.1402508552 = 4.385
5 mR = 4.385 mrad
Milliroentgen to Millirad Conversion Table
Quick reference table for common milliroentgen to millirad conversions. Click any value for detailed calculation.
| Milliroentgens (mR) | Millirads (mrad) |
|---|---|
| 1 mR | 0.877 mrad |
| 2 mR | 1.754 mrad |
| 5 mR | 4.385 mrad |
| 10 mR | 8.77 mrad |
| 15 mR | 13.155 mrad |
| 20 mR | 17.54 mrad |
| 25 mR | 21.925 mrad |
| 50 mR | 43.85 mrad |
| 100 mR | 87.7 mrad |
About These Units
Milliroentgen (mR)
A milliroentgen (mR) equals 0.001 roentgen. Radiation survey meters often display mR/h for monitoring X-ray and gamma fields. Natural background: 10-20 mR/year. Typical survey meter range: 0-1000 mR/h.
Millirad (mrad)
A millirad (mrad) equals 0.001 rad or 10 μGy. Used in medical dosimetry: dental bitewing 0.5-2 mrad, chest X-ray 10-20 mrad. Provides convenient scale for diagnostic imaging dose specifications.
Frequently Asked Questions
How do I convert milliroentgens to millirads?
To convert milliroentgens to millirads, divide the value by 1.1402508552. For example, 10 mR = 8.77 mrad.
How many millirads are in 1 milliroentgen?
1 milliroentgen equals 0.877 millirads.
What is the formula for milliroentgens to millirads?
The formula is: mrad = mR ÷ 1.1402508552.