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Sievert to Gray

Convert Sievert to Gray and get the exact value instantly.

1 Sv = 1 Gy

About this conversion

To convert Sievert to Gray, multiply the number of Sievert 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

Sievert (Sv)Gray (Gy)
1 Sv1 Gy
2 Sv2 Gy
5 Sv5 Gy
10 Sv10 Gy
100 Sv100 Gy

How to use this converter

  1. Enter your Sievert value

    Type any number into the Sievert field. It starts at 1 so you can read the rate straight away.

  2. Read the Gray result

    The amount in Gray updates as you type, so there is no button to press and nothing to wait for.

  3. 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 Gray are in one Sievert?
One Sievert equals 1 Gy. 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 Sievert to Gray 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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