Convert Millisieverts to Rem (mSv to rem)
1 millisievert (mSv) = 0.1 rem. 1 rem = 10 mSv. Example: 15 mSv = 15 × 0.1 = 1.5 rem.
Also searched as millisieverts to rem, millisieverts in rem, millisieverts into rem, mSv to rem, mSv in rem, mSv into rem, millisievert to rem, mSv to rem converter and how many rem in a millisievert.
1 mSv = 0.1 rem
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk millisievert to rem converter to paste a column from Excel.
How to Convert Millisievert to Rem
- 1 mSv = 0.1 rem
- 1 rem = 10 mSv
- Example: convert 15 mSv to rem: 15 mSv = 15 × 0.1 rem = 1.5 rem
Formula
rem = mSv ÷ 10
Derivation from SI units:
- 1 mSv = 10⁻³ Sv.
- 1 rem = 0.01 Sv.
- 1 mSv = 0.001 Sv ÷ 0.01 Sv per rem = 0.1 rem
Both units are defined exactly, so the factor is exact. Millisievert definition: millisievert; Rem definition: rem.
Worked examples
- A reading of 2.4 mSv converts to 0.24 rem.
2.4 mSv × 0.1 = 0.24 rem - A value of 10 mSv is 1 rem.
10 mSv × 0.1 = 1 rem
Millisievert to Rem conversion table
| Millisieverts (mSv) | Rem |
|---|---|
| 0.01 mSv | 0.001 rem |
| 0.1 mSv | 0.01 rem |
| 1 mSv | 0.1 rem |
| 2.4 mSv | 0.24 rem |
| 3 mSv | 0.3 rem |
| 7 mSv | 0.7 rem |
| 10 mSv | 1 rem |
| 20 mSv | 2 rem |
| 50 mSv | 5 rem |
| 100 mSv | 10 rem |
Where it's used
Millisieverts are used for annual dose limits, while rem appear in US NRC dose limits (5 rem/yr occupational). Both measure equivalent and effective radiation dose, so the conversion is a fixed factor.
Millisievert to other equivalent dose units
| Conversion | 1 mSv equals |
|---|---|
| millisievert to rem | 0.1 rem |
| millisievert to sievert | 0.001 Sv |
| millisievert to microsievert | 1000 µSv |
| millisievert to millirem | 100 mrem |
| millisievert to nanosievert | 1000000 nSv |
Frequently asked questions
How many rem are in 1 millisievert?
1 mSv = 0.1 rem.
How do I convert millisieverts to rem?
Multiply the value in mSv by 0.1, or divide it by 10. For example, 15 mSv × 0.1 = 1.5 rem.
Is the mSv to rem conversion exact?
Yes. Both units are defined exactly, and 1 mSv is exactly 0.1 rem.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4 (becquerel, gray, sievert, lux) and Table 2 (candela).
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "rem".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Millisieverts to Rem (mSv to rem). Retrieved October 25, 2026, from https://scientificconverters.com/equivalent-dose/millisieverts-to-rem/
IEEE
Scientific Converters, "Convert Millisieverts to Rem (mSv to rem)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/equivalent-dose/millisieverts-to-rem/