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Sievert to Millisievert
Convert Sievert to Millisievert and get the exact value instantly.
About this conversion
To convert Sievert to Millisievert, multiply the number of Sievert by 1000.
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) | Millisievert (mSv) |
|---|---|
| 1 Sv | 1000 mSv |
| 2 Sv | 2000 mSv |
| 5 Sv | 5000 mSv |
| 10 Sv | 10000 mSv |
| 100 Sv | 100000 mSv |
How to use this converter
- Enter your Sievert value
Type any number into the Sievert field. It starts at 1 so you can read the rate straight away.
- Read the Millisievert result
The amount in Millisievert 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 Millisievert are in one Sievert?
- One Sievert equals 1000 mSv. 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 Millisievert 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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