Convert Grays to Rads
1 gray = 100 rads. Multiply the number of grays by 100.
Result
1 Gy = 100 rad
Multiply the number of grays by 100.
For information only. Confirm dose and exposure values with a qualified radiation safety professional. About accuracy
Popular radiation dose conversions
Grays to Rads table
| Grays | Rads |
|---|---|
| 1 Gy | 100 rad |
| 2 Gy | 200 rad |
| 3 Gy | 300 rad |
| 4 Gy | 400 rad |
| 5 Gy | 500 rad |
| 10 Gy | 1,000 rad |
| 20 Gy | 2,000 rad |
| 25 Gy | 2,500 rad |
| 50 Gy | 5,000 rad |
| 100 Gy | 10,000 rad |
| 500 Gy | 50,000 rad |
| 1000 Gy | 100,000 rad |
About these units
The gray (Gy) is an SI base or derived unit of radiation dose, equal to 1 sieverts.
The rad (rad) is a specialist or regional unit of radiation dose, equal to 0.01 sieverts.
Going the other way, 1 rad = 0.01 grays. Absorbed dose is measured in grays (or rads); equivalent dose, which accounts for biological effect, is measured in sieverts (or rems). For X-rays, gamma and beta radiation the weighting factor is 1, so one gray equals one sievert — the assumption used in this converter.
Frequently asked
- How many rads are in a gray?
- 1 gray = 100 rads.
- How do you convert grays to rads?
- Multiply the number of grays by 100.
- What is 10 Gy in rad?
- 10 Gy = 1,000 rad.