Sieverts to rems
Type a value in sieverts to see it in rems 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 sieverts box.
- Read the result in rems as you type, and pick the precision you need.
- Swap the direction to convert back, or copy the result.
How it is calculated
rem = Sv × 100
Multiply the value in sieverts by 100 to get rems.
Example
To convert 25 Sv to rems: 25 × 100 = 2,500 rem.
Conversion table
| Sieverts (Sv) | Rems (rem) |
|---|---|
| 1 | 100 |
| 2 | 200 |
| 3 | 300 |
| 5 | 500 |
| 10 | 1,000 |
| 20 | 2,000 |
| 25 | 2,500 |
| 50 | 5,000 |
| 100 | 10,000 |
| 250 | 25,000 |
| 500 | 50,000 |
| 1,000 | 100,000 |
About the units
- Sievert
- The SI unit of equivalent and effective dose: one joule per kilogram multiplied by the weighting factor for the radiation type.
- Rem
- An older unit of equivalent dose equal to exactly 0.01 sievert, still used in the United States.
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 rems are in one sievert?
1 Sv = 100 rem exactly.
How do I convert sieverts to rems?
Use rem = Sv × 100. For example, 25 Sv = 2,500 rem.
How many sieverts are in one rem?
1 rem = 0.01 Sv.
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.