Reference sheet
Radiology: absorbed dose conversion chart
Gray and rad. Factors are given to 7 significant figures; open the converter for full precision and the worked solution.
| Unit | In Gy | 1 Gy in unit |
|---|---|---|
| gray (Gy) | 1 Gy | 1 Gy |
| milligray (mGy) | 0.001 Gy | 1,000 mGy |
| centigray (cGy) | 0.01 Gy | 100 cGy |
| rad (dose) (rad) | 0.01 Gy | 100 rad |
| rad | Gy |
|---|---|
| 0.1 rad | 0.001 Gy |
| 0.5 rad | 0.005 Gy |
| 1 rad | 0.01 Gy |
| 2 rad | 0.02 Gy |
| 5 rad | 0.05 Gy |
| 10 rad | 0.1 Gy |
| 20 rad | 0.2 Gy |
| 25 rad | 0.25 Gy |
| 50 rad | 0.5 Gy |
| 100 rad | 1 Gy |
| 250 rad | 2.5 Gy |
| 500 rad | 5 Gy |
| 1,000 rad | 10 Gy |
| Gy | rad |
|---|---|
| 0.1 Gy | 10 rad |
| 0.5 Gy | 50 rad |
| 1 Gy | 100 rad |
| 2 Gy | 200 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 |
| 250 Gy | 25,000 rad |
| 500 Gy | 50,000 rad |
| 1,000 Gy | 100,000 rad |
Formula: Gy = rad × 0.01
Need another value? Use the rad to Gy converter or the radiology: absorbed dose converter.
Unitglide · unitglide.app/reference/radiation-dose · Factors from NIST SP 811, NIST Handbook 44 and the BIPM SI Brochure (9th ed.). Values rounded to 7 significant figures unless exact.