Convert roentgens to milliroentgens
1 R = 1000 mR — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
1000mR
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1 R = 1000 mR
Show this value in all 5 radiation exposure units
- Coulomb per kilograms C/kg 0.000 258
- Millicoulomb per kilograms mC/kg 0.258
- Roentgens R 1
- Milliroentgens mR 1000
- Microroentgens µR 1 000 000
Every row is Roentgen (R) converted through the coulomb per kilogram, in exact rational arithmetic.
How to convert roentgens to milliroentgens
Multiply the number of roentgens by 1000 to get milliroentgens.
The exact factor is 1000 .
Roentgen: Exactly 2.58 × 10⁻⁴ C/kg by definition.
Roentgen to Milliroentgen conversion table
| Roentgens (R) | Milliroentgens (mR) |
|---|---|
| 1 R | 1000 |
| 2 R | 2000 |
| 3 R | 3000 |
| 5 R | 5000 |
| 10 R | 10 000 |
| 20 R | 20 000 |
| 25 R | 25 000 |
| 50 R | 50 000 |
| 100 R | 100 000 |
| 250 R | 250 000 |
| 500 R | 500 000 |
| 1000 R | 1 000 000 |
Milliroentgen to Roentgen conversion table
| Milliroentgens (mR) | Roentgens (R) |
|---|---|
| 1 mR | 0.001 |
| 2 mR | 0.002 |
| 3 mR | 0.003 |
| 5 mR | 0.005 |
| 10 mR | 0.01 |
| 20 mR | 0.02 |
| 25 mR | 0.025 |
| 50 mR | 0.05 |
| 100 mR | 0.1 |
| 250 mR | 0.25 |
| 500 mR | 0.5 |
| 1000 mR | 1 |
Frequently asked
How many milliroentgens are in a roentgen?
One roentgen equals 1000 milliroentgens (R → mR). That figure is exact, not rounded.
How do you convert roentgens to milliroentgens?
Multiply the number of roentgens by 1000 to get milliroentgens.
What is 1 mR in roentgens?
One milliroentgen is 0.001 roentgens.
What is 10 R in mR?
10 R = 10 000 mR.
What exactly is a roentgen?
Exactly 2.58 × 10⁻⁴ C/kg by definition.