Convert mrem to rem
Convert millirem to rem by entering a value below.
How to Convert Millirem to Rem
The millirem and rem are both units of radiation dose. By definition, 1 rem equals exactly 1000 millirem. This means to convert millirem to rem, you divide by 1000.
Formula
Step-by-Step Example
Convert 5 mrem to rem:
We need to convert millirem to rem
Since 1 rem = 1000 mrem, divide by 1000
5 ÷ 1000 = 0.005
5 mrem = 0.005 rem
Millirem to Rem Conversion Table
Quick reference table for common millirem to rem conversions. Click any value for detailed calculation.
| Millirem (mrem) | Rem (rem) |
|---|---|
| 0.1 mrem | 0.0001 rem |
| 0.5 mrem | 0.0005 rem |
| 1 mrem | 0.001 rem |
| 2 mrem | 0.002 rem |
| 5 mrem | 0.005 rem |
| 10 mrem | 0.01 rem |
| 25 mrem | 0.025 rem |
| 50 mrem | 0.05 rem |
| 100 mrem | 0.1 rem |
About These Units
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.
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.
Frequently Asked Questions
How do I convert millirem to rem?
To convert millirem to rem, divide the value by 1000. For example, 10 mrem = 0.01 rem.
How many rem are in 1 millirem?
1 millirem equals 0.001 rem.
What is the formula for millirem to rem?
The formula is: rem = mrem ÷ 1000.