Convert Gray to Millirem
Enter the number of grays that you want to convert to millirem.
How to Convert Grays to Millirem
The gray and millirem are both units of radiation dose. By definition, 1 gray equals exactly 100000 millirem. This means to convert grays to millirem, you multiply by 100000.
Formula
Step-by-Step Example
Convert 5 Gy to millirem:
We need to convert grays to millirem
Since 1 Gy = 100000 mrem, multiply by 100000
5 × 100000 = 500000
5 Gy = 500000 mrem
Gray to Millirem Conversion Table
Quick reference table for common gray to millirem conversions. Click any value for detailed calculation.
| Grays (Gy) | Millirem (mrem) |
|---|---|
| 0.1 Gy | 10000 mrem |
| 0.5 Gy | 50000 mrem |
| 1 Gy | 100000 mrem |
| 2 Gy | 200000 mrem |
| 5 Gy | 500000 mrem |
| 10 Gy | 1000000 mrem |
| 25 Gy | 2500000 mrem |
| 50 Gy | 5000000 mrem |
| 100 Gy | 10000000 mrem |
About These Units
Gray (Gy)
The gray (Gy) is the SI unit of absorbed dose: energy deposited per unit mass (1 Gy = 1 J/kg). Named after Louis Harold Gray. For gamma/X-rays and beta particles, 1 Gy ≈ 1 Sv (quality factor Q=1). Radiation therapy total dose: 40-80 Gy.
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 grays to millirem?
To convert grays to millirem, multiply the value by 100000. For example, 10 Gy = 1000000 mrem.
How many millirem are in 1 gray?
1 gray equals 100000 millirem.
What is the formula for grays to millirem?
The formula is: mrem = Gy × 100000.