Gray to Rad Converter
Convert radiation absorbed dose from Gray to Rad.
Result
0
Rad
1 Gray (Gy) = 100 Rad
How to convert Gray (Gy) to Rad?
Gray (Gy) is the SI unit of absorbed radiation dose. Rad is an older unit. The relationship is:
- 1 Gy = 100 rad
- 1 rad = 0.01 Gy
To convert Gray (Gy) to Rad, multiply the value by 100.
Formula: Rad = Gray (Gy) × 100
Step-by-Step Calculation
- Take the number of Gray (Gy) you want to convert (e.g., 0.5 Gy).
- Multiply that value by 100.
- The result is the value in Rad. (Example: 0.5 × 100 = 50 rad).
How to use this converter?
Enter gray (Gy) and instantly get rad—useful for comparing older radiation references with modern SI units.
Common Gray to Rad Conversions
Quick reference guide for common values.
0.01 Gy = 1 rad
0.05 Gy = 5 rad
0.1 Gy = 10 rad
0.25 Gy = 25 rad
0.5 Gy = 50 rad
1 Gy = 100 rad
2 Gy = 200 rad
5 Gy = 500 rad
10 Gy = 1000 rad
0.2 Gy = 20 rad
Tip: Gy and rad measure absorbed dose
Gray and rad measure absorbed energy per mass. They are different from dose equivalent units like sievert (Sv) and rem.
Common Gray to Rad Conversions
| Gray (Gy) Input | Rad Result |
|---|---|
| 0.01 Gy | 1 rad |
| 0.05 Gy | 5 rad |
| 0.1 Gy | 10 rad |
| 0.2 Gy | 20 rad |
| 0.25 Gy | 25 rad |
| 0.5 Gy | 50 rad |
| 1 Gy | 100 rad |
| 2 Gy | 200 rad |
| 5 Gy | 500 rad |
| 10 Gy | 1000 rad |
Frequently Asked Questions
How do I convert Gy to rad?
Multiply gray (Gy) by 100 to get rad.
How many rad is 1 Gy?
1 Gy equals 100 rad.
Is this conversion exact?
Yes—1 Gy is defined as exactly 100 rad.
What is gray (Gy)?
Gray is the SI unit of absorbed dose: 1 Gy = 1 joule per kilogram.
What’s the difference between rad and rem?
rad measures absorbed dose, while rem measures dose equivalent (biological effect).