Rads to Grays Converter
1 rad = 0.01 Gy. Type any value to convert rads to grays.
Rads to grays table
Formula: Gy = rad × 0.01
| Rad (rad) | Gray (Gy) |
|---|---|
| 0.1 rad | 0.001 Gy |
| 0.25 rad | 0.0025 Gy |
| 0.5 rad | 0.005 Gy |
| 1 rad | 0.01 Gy |
| 2 rad | 0.02 Gy |
| 3 rad | 0.03 Gy |
| 4 rad | 0.04 Gy |
| 5 rad | 0.05 Gy |
| 6 rad | 0.06 Gy |
| 7 rad | 0.07 Gy |
| 8 rad | 0.08 Gy |
| 9 rad | 0.09 Gy |
| 10 rad | 0.1 Gy |
| 12 rad | 0.12 Gy |
| 15 rad | 0.15 Gy |
| 20 rad | 0.2 Gy |
| 25 rad | 0.25 Gy |
| 30 rad | 0.3 Gy |
| 40 rad | 0.4 Gy |
| 50 rad | 0.5 Gy |
| 60 rad | 0.6 Gy |
| 75 rad | 0.75 Gy |
| 100 rad | 1 Gy |
| 150 rad | 1.5 Gy |
| 200 rad | 2 Gy |
| 250 rad | 2.5 Gy |
| 500 rad | 5 Gy |
| 1,000 rad | 10 Gy |
How to use: Rads to Grays
- 1 Type the value in rads.
- 2 The result in grays appears at once – or type in the grays 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
Rad (rad) is a unit of absorbed dose (CGS system); 1 rad = 0.01 Gy. Gray (Gy) is a unit of absorbed dose (SI).
To convert rads to grays, multiply the value by 0.01 (Gy = rad × 0.01). Example: 10 rad = 0.1 Gy.
Calculated in your browser – nothing you type is sent anywhere.
Frequently asked questions
How do I convert rads to grays?
To convert rads to grays, multiply the value by 0.01: Gy = rad × 0.01. For example 10 rad = 0.1 Gy.
What is 1 rad in grays?
1 rad = 0.01 Gy. The other way round, 1 Gy = 100 rad.
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.