Rem to Sievert Converter
Convert equivalent radiation dose between rem and sieverts (Sv). Supports mrem, mSv, and µSv. Uses the standard factor 1 rem = 0.01 Sv.
1 rem = 0.01 Sv = 10 mSv = 10,000 µSv.
Results
Values rounded for display.
Conversion formula
1 rem = 0.01 Sv
Sv = rem × 0.01
rem = Sv × 100
1 rem = 10 mSv = 10,000 µSv
1 mrem = 0.00001 Sv = 0.01 mSv
These factors are standard in radiation protection and described by ICRP/IAEA documentation — always verify against your local regulatory guidance if you are doing safety-critical work.
Reference table
| rem | Sv | mSv | µSv |
|---|
Useful for quick lookups (occupational dose, diagnostic procedures, etc.).
What is a rem?
The rem (roentgen equivalent man) is an older unit of equivalent or effective dose in radiation protection. It scales the absorbed dose (in rad) by a quality factor to account for biological effect. 1 rem = 0.01 sievert.
What is a sievert (Sv)?
The sievert is the SI unit for equivalent/effective dose. It is the unit recommended by international bodies and seen in most modern medical and nuclear safety documents.
Why convert?
Older US documents and industry tables sometimes still report in rem or mrem, while current standards, international papers, or European regulations use Sv or mSv. A clean converter avoids mistakes like confusing 10 mSv with 10 mrem (1000× difference!).
FAQ
1. Does this account for dose rate (per hour)?
No — this is for the dose itself. If your instrument shows mrem/h or µSv/h, convert the unit and keep the “per hour”.
2. Are rem and Sv always directly convertible?
For reporting equivalent/effective dose in routine protection work, yes: 1 rem = 0.01 Sv. If you work with special radiation weighting, follow your technical procedure.
3. Is this for medical advice?
No — this is an educational/utility tool. For patient or worker dose assessment, follow competent authority guidance.