Convert millirems to rems
1 mrem = 0.001 rem — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
0.001rem
As a fraction: 1/1000
1 mrem = 0.001 rem
How to convert millirems to rems
Multiply the number of millirems by 0.001 to get rems.
The exact factor is 0.001 — as a fraction, 1/1000.
Millirem: A chest X-ray is roughly 10 mrem, i.e. 0.1 mSv.
Rem: Röntgen equivalent man: 100 rem = 1 Sv. Still standard in US regulations.
Millirem to Rem conversion table
| Millirems (mrem) | Rems (rem) |
|---|---|
| 1 mrem | 0.001 |
| 2 mrem | 0.002 |
| 3 mrem | 0.003 |
| 5 mrem | 0.005 |
| 10 mrem | 0.01 |
| 20 mrem | 0.02 |
| 25 mrem | 0.025 |
| 50 mrem | 0.05 |
| 100 mrem | 0.1 |
| 250 mrem | 0.25 |
| 500 mrem | 0.5 |
| 1000 mrem | 1 |
Rem to Millirem conversion table
| Rems (rem) | Millirems (mrem) |
|---|---|
| 1 rem | 1000 |
| 2 rem | 2000 |
| 3 rem | 3000 |
| 5 rem | 5000 |
| 10 rem | 10 000 |
| 20 rem | 20 000 |
| 25 rem | 25 000 |
| 50 rem | 50 000 |
| 100 rem | 100 000 |
| 250 rem | 250 000 |
| 500 rem | 500 000 |
| 1000 rem | 1 000 000 |
Frequently asked
How many rems are in a millirem?
One millirem equals 0.001 rems (mrem → rem). That figure is exact, not rounded.
How do you convert millirems to rems?
Multiply the number of millirems by 0.001 to get rems.
What is 1 rem in millirems?
One rem is 1000 millirems.
What is 10 mrem in rem?
10 mrem = 0.01 rem.
What exactly is a millirem?
A chest X-ray is roughly 10 mrem, i.e. 0.1 mSv.
What exactly is a rem?
Röntgen equivalent man: 100 rem = 1 Sv. Still standard in US regulations.