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Gray to Sievert
Convert Gray to Sievert and get the exact value instantly.
About this conversion
To convert Gray to Sievert, multiply the number of Gray by 1.
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) | Sievert (Sv) |
|---|---|
| 1 Gy | 1 Sv |
| 2 Gy | 2 Sv |
| 5 Gy | 5 Sv |
| 10 Gy | 10 Sv |
| 100 Gy | 100 Sv |
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 Sievert result
The amount in Sievert 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 Sievert are in one Gray?
- One Gray equals 1 Sv. 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 Sievert 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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