Grays to Rads (Gy to rad)
Free online gray to rad converter. Type a value, get an instant exact result — plus the formula, a ready-made conversion table, and reverse conversion.
RADIATION ABSORBED DOSE CONVERTER — INSTANT RESULT
Formula: multiply the gray value by 100 — i.e. rad = Gy × 100
Quick check: 1 Gy = 100 rad
Quick check: 1 Gy = 100 rad
Grays to Rads conversion table
| Grays (Gy) | Rads (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 |
| 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 |
| 75 Gy | 7,500 rad |
| 100 Gy | 10,000 rad |
| 250 Gy | 25,000 rad |
| 500 Gy | 50,000 rad |
| 1,000 Gy | 100,000 rad |
How to convert grays to rads
To convert grays to rads, multiply the amount in grays by 100. For example, 10 Gy = 1,000 rad. To convert in the other direction, divide by the same factor, or use the ⇄ swap button above.
Convert absorbed radiation dose between grays and rads. One gray is one joule per kilogram of tissue — exactly 100 rads.
Frequently asked questions
How many rads are in one gray?
One gray is exactly 100 rads.
How do I convert Gy to rad?
Multiply the Gy value by 100 to get rad. The converter at the top of this page does this automatically and works in both directions.
How much is 100 grays in rads?
100 grays equals 10,000 rads.