Grays to Rads Converter
1 Gy = 100 rad. Type any value to convert grays to rads.
Grays to rads table
Formula: rad = Gy × 100
| Gray (Gy) | Rad (rad) |
|---|---|
| 0.1 Gy | 10 rad |
| 0.25 Gy | 25 rad |
| 0.5 Gy | 50 rad |
| 1 Gy | 100 rad |
| 2 Gy | 200 rad |
| 3 Gy | 300 rad |
| 4 Gy | 400 rad |
| 5 Gy | 500 rad |
| 6 Gy | 600 rad |
| 7 Gy | 700 rad |
| 8 Gy | 800 rad |
| 9 Gy | 900 rad |
| 10 Gy | 1,000 rad |
| 12 Gy | 1,200 rad |
| 15 Gy | 1,500 rad |
| 20 Gy | 2,000 rad |
| 25 Gy | 2,500 rad |
| 30 Gy | 3,000 rad |
| 40 Gy | 4,000 rad |
| 50 Gy | 5,000 rad |
| 60 Gy | 6,000 rad |
| 75 Gy | 7,500 rad |
| 100 Gy | 10,000 rad |
| 150 Gy | 15,000 rad |
| 200 Gy | 20,000 rad |
| 250 Gy | 25,000 rad |
| 500 Gy | 50,000 rad |
| 1,000 Gy | 100,000 rad |
How to use: Grays to Rads
- 1 Type the value in grays.
- 2 The result in rads appears at once – or type in the rads field to convert back.
- 3 Pick a common value, round to fewer decimals or swap the units with one click.
- 4 Copy the result, or open “In every unit” to see the value in all units of absorbed dose.
About this tool
Gray (Gy) is a unit of absorbed dose (SI). Rad (rad) is a unit of absorbed dose (CGS system); 1 rad = 0.01 Gy.
To convert grays to rads, multiply the value by 100 (rad = Gy × 100). Example: 10 Gy = 1,000 rad.
Calculated in your browser – nothing you type is sent anywhere.
Frequently asked questions
How do I convert grays to rads?
To convert grays to rads, multiply the value by 100: rad = Gy × 100. For example 10 Gy = 1,000 rad.
What is 1 Gy in rads?
1 Gy = 100 rad. The other way round, 1 rad = 0.01 Gy.
How exact is the result?
The converter uses the official definitions of both units and shows up to 10 significant digits; choose 0–6 decimals to round. Both units are defined exactly in terms of each other, so the factor itself is exact.
Can I convert other units of absorbed dose here?
Yes – choose any of the 5 units of absorbed dose in the From and To lists, or switch to another measurement at the top.