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Gray to Rad
Convert Gray to Rad and get the exact value instantly.
About this conversion
To convert Gray to Rad, multiply the number of Gray by 100.
Radiation dose uses sieverts and grays in SI, while older rem and rad figures persist in some fields; note that sieverts weight for biological effect whereas grays measure absorbed energy.
Conversion table
| Gray (Gy) | Rad (rad) |
|---|---|
| 1 Gy | 100 rad |
| 2 Gy | 200 rad |
| 5 Gy | 500 rad |
| 10 Gy | 1000 rad |
| 100 Gy | 10000 rad |
How to use this converter
- Enter your Gray value
Type any number into the Gray field. It starts at 1 so you can read the rate straight away.
- Read the Rad result
The amount in Rad updates as you type, so there is no button to press and nothing to wait for.
- Swap or keep exploring
Use the swap control to flip the direction, or pick a related conversion from the list below.
Frequently asked
- How many Rad are in one Gray?
- One Gray equals 100 rad. Enter any amount above to get an exact figure for your own value.
- Is this converter accurate?
- Yes. It uses the exact international definition of each unit and computes on your device, so the only rounding is for display.
- Do you upload the numbers I enter?
- No. The Gray to Rad conversion runs entirely in your browser tab, and nothing you type is sent to a server.
- Does it work on my phone?
- Yes. It runs in any modern mobile browser and keeps working offline once the page has loaded.
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