Convert milliroentgens to roentgens
1 mR = 0.001 R — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
0.001R
As a fraction: 1/1000
1 mR = 0.001 R
How to convert milliroentgens to roentgens
Multiply the number of milliroentgens by 0.001 to get roentgens.
The exact factor is 0.001 — as a fraction, 1/1000.
Roentgen: Exactly 2.58 × 10⁻⁴ C/kg by definition.
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 |
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 |
Frequently asked
How many roentgens are in a milliroentgen?
One milliroentgen equals 0.001 roentgens (mR → R). That figure is exact, not rounded.
How do you convert milliroentgens to roentgens?
Multiply the number of milliroentgens by 0.001 to get roentgens.
What is 1 R in milliroentgens?
One roentgen is 1000 milliroentgens.
What is 10 mR in R?
10 mR = 0.01 R.
What exactly is a roentgen?
Exactly 2.58 × 10⁻⁴ C/kg by definition.