Convert rem to mrem
Input the number of rem you want to convert to millirem.
How to Convert Rem to Millirem
The rem and millirem are both units of radiation dose. By definition, 1 rem equals exactly 1000 millirem. This means to convert rem to millirem, you multiply by 1000.
Formula
Step-by-Step Example
Convert 5 rem to millirem:
We need to convert rem to millirem
Since 1 rem = 1000 mrem, multiply by 1000
5 × 1000 = 5000
5 rem = 5000 mrem
Rem to Millirem Conversion Table
Quick reference table for common rem to millirem conversions. Click any value for detailed calculation.
| Rem (rem) | Millirem (mrem) |
|---|---|
| 0.1 rem | 100 mrem |
| 0.5 rem | 500 mrem |
| 1 rem | 1000 mrem |
| 2 rem | 2000 mrem |
| 5 rem | 5000 mrem |
| 10 rem | 10000 mrem |
| 25 rem | 25000 mrem |
| 50 rem | 50000 mrem |
| 100 rem | 100000 mrem |
About These Units
Rem (rem)
The rem (Roentgen Equivalent Man) is the traditional unit of equivalent dose. One sievert = 100 rem exactly. Still used in US nuclear industry and regulations. Annual occupational limit: 5 rem/year. Natural background: 0.3 rem/year. Acute 450 rem ≈ LD50.
Millirem (mrem)
A millirem (mrem) equals 0.001 rem or 10 μSv. US dosimetry standard: natural background 300-400 mrem/year, occupational limit 5,000 mrem/year, public limit 100 mrem/year above background. Chest X-ray: ~2 mrem.
Frequently Asked Questions
How do I convert rem to millirem?
To convert rem to millirem, multiply the value by 1000. For example, 10 rem = 10000 mrem.
How many millirem are in 1 rem?
1 rem equals 1000 millirem.
What is the formula for rem to millirem?
The formula is: mrem = rem × 1000.