Gray to Rad Converter
Convert radiation absorbed dose from Gray to Rad.
Gray (Gy) → Rad
Enter a value in Gray (Gy)•1 Gray (Gy) = 100 Rad
Gray (Gy)
Decimals supported.
Result
Rad
—
Enter a value to convert Gray (Gy) to 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
- 1Take the number of Gray (Gy) you want to convert (e.g., 0.5 Gy).
- 2Multiply that value by 100.
- 3The 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.
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
Q
How do I convert Gy to rad?
Multiply gray (Gy) by 100 to get rad.
Q
How many rad is 1 Gy?
1 Gy equals 100 rad.
Q
Is this conversion exact?
Yes—1 Gy is defined as exactly 100 rad.
Q
What is gray (Gy)?
Gray is the SI unit of absorbed dose: 1 Gy = 1 joule per kilogram.
Q
What’s the difference between rad and rem?
rad measures absorbed dose, while rem measures dose equivalent (biological effect).