Milliroentgen to roentgen
Type a value in mR to get it in R instantly.
0.1R
That's 1.14× as much exposure as a year of natural background, while a dental X-ray is 2.5× more.
What it means
How much exposure is that?
Information only. Medical figures are typical entrance exposures and vary widely with equipment and patient. For dose to people, use gray and sievert.
The math
How to convert mR to R
To convert milliroentgen to roentgen, multiply by 0.001.
Example: 100 mR × 0.001 = 0.1 R.
In the other direction, 1 R = 1,000 mR.
Every unit
Your exposure in every unit
Tables
mR to R conversion table
| mR | R |
|---|---|
| 1 mR | 0.001 R |
| 5 mR | 0.005 R |
| 10 mR | 0.01 R |
| 15 mR | 0.015 R |
| 25 mR | 0.025 R |
| 50 mR | 0.05 R |
| 100 mR | 0.1 R |
| 250 mR | 0.25 R |
| 500 mR | 0.5 R |
| 1,000 mR | 1 R |
| 5,000 mR | 5 R |
R to mR conversion table
| R | mR |
|---|---|
| 1 R | 1,000 mR |
| 5 R | 5,000 mR |
| 10 R | 10,000 mR |
| 15 R | 15,000 mR |
| 25 R | 25,000 mR |
| 50 R | 50,000 mR |
| 100 R | 100,000 mR |
| 250 R | 250,000 mR |
| 500 R | 500,000 mR |
| 1,000 R | 1,000,000 mR |
| 5,000 R | 5,000,000 mR |
Quick answers
Quick answers
- How many R is 1 mR?
- 1 mR is 0.001 R.
- How many R is 10 mR?
- 10 mR is 0.01 R.
- How many R is 100 mR?
- 100 mR is 0.1 R.
The units
About these units
Milliroentgen (mR)
A thousandth of a roentgen, the survey-meter unit.
Roentgen (R)
The classic unit of exposure, 2.58 × 10⁻⁴ C/kg.
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