Rems to sieverts
Type a value in rems to see it in sieverts straight away, or type in the second box to convert back.
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Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Type the value in the rems box.
- Read the result in sieverts as you type, and pick the precision you need.
- Swap the direction to convert back, or copy the result.
How it is calculated
Sv = rem × 0.01
Multiply the value in rems by 0.01 to get sieverts.
Example
To convert 25 rem to sieverts: 25 × 0.01 = 0.25 Sv.
Conversion table
| Rems (rem) | Sieverts (Sv) |
|---|---|
| 1 | 0.01 |
| 2 | 0.02 |
| 3 | 0.03 |
| 5 | 0.05 |
| 10 | 0.1 |
| 20 | 0.2 |
| 25 | 0.25 |
| 50 | 0.5 |
| 100 | 1 |
| 250 | 2.5 |
| 500 | 5 |
| 1,000 | 10 |
About the units
- Rem
- An older unit of equivalent dose equal to exactly 0.01 sievert, still used in the United States.
- Sievert
- The SI unit of equivalent and effective dose: one joule per kilogram multiplied by the weighting factor for the radiation type.
Limits and caveats
- Results are rounded for display and computed with the browser's floating point precision (about 15 significant digits).
- Both unit factors are exact by their official definitions.
Questions about this tool
How many sieverts are in one rem?
1 rem = 0.01 Sv exactly.
How do I convert rems to sieverts?
Use Sv = rem × 0.01. For example, 25 rem = 0.25 Sv.
How many rems are in one sievert?
1 Sv = 100 rem.
How many millirems are in a millisievert?
One millisievert is exactly 100 millirems, because one sievert equals 100 rems.
Can sieverts be converted to becquerels?
No. Becquerels measure how active a radioactive source is, while sieverts measure the dose effect on the body. Linking them needs the isotope, exposure time and exposure route.