Convert Millisieverts to Millirem (mSv to mrem)
1 millisievert (mSv) = 100 millirem (mrem). 1 mrem = 0.01 mSv. Example: 1 mSv = 1 × 100 = 100 mrem.
Also searched as mSv to mrem, millisieverts to millirem and msv to mrem conversion.
1 mSv = 100 mrem
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk millisievert to millirem converter to paste a column from Excel.
How to Convert Millisievert to Millirem
- 1 mSv = 100 mrem
- 1 mrem = 0.01 mSv
- Example: convert 1 mSv to mrem: 1 mSv = 1 × 100 mrem = 100 mrem
Formula
mrem = mSv × 100
Derivation from SI units:
- 1 mSv = 10⁻³ Sv.
- 1 mrem = 10⁻⁵ Sv = 10 µSv.
- 1 mSv = 0.001 Sv ÷ 0.00001 Sv per mrem = 100 mrem
Both units are defined exactly, so the factor is exact. Millisievert definition: millisievert; Millirem definition: millirem.
Worked examples
- The 1 mSv public dose limit is 100 mrem.
1 mSv × 100 = 100 mrem - A chest CT of about 7 mSv is 700 mrem.
7 mSv × 100 = 700 mrem
Millisievert to Millirem conversion table
| Millisieverts (mSv) | Millirem (mrem) |
|---|---|
| 0.01 mSv | 1 mrem |
| 0.1 mSv | 10 mrem |
| 1 mSv | 100 mrem |
| 2.4 mSv | 240 mrem |
| 3 mSv | 300 mrem |
| 7 mSv | 700 mrem |
| 10 mSv | 1000 mrem |
| 20 mSv | 2000 mrem |
| 50 mSv | 5000 mrem |
| 100 mSv | 10000 mrem |
Where it's used
Doses in millisieverts from medical imaging reports and international guidance are converted to millirem for US comparisons. Multiply by 100.
Millisievert to other equivalent dose units
| Conversion | 1 mSv equals |
|---|---|
| millisievert to millirem | 100 mrem |
| millisievert to sievert | 0.001 Sv |
| millisievert to microsievert | 1000 µSv |
| millisievert to rem | 0.1 rem |
| millisievert to nanosievert | 1000000 nSv |
Frequently asked questions
How many mrem is 1 mSv?
Exactly 100 mrem: 2.4 mSv of annual background radiation is 240 mrem.
What dose does a CT scan give?
Roughly 2 mSv for a head CT and 7–10 mSv for a chest or abdomen CT, that is 200–1000 mrem.
How many millirem are in 1 millisievert?
1 mSv = 100 mrem.
How do I convert millisieverts to millirem?
Multiply the value in mSv by 100. For example, 1 mSv × 100 = 100 mrem.
Is the mSv to mrem conversion exact?
Yes. Both units are defined exactly, and 1 mSv is exactly 100 mrem.
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 Millirem (mSv to mrem). Retrieved October 25, 2026, from https://scientificconverters.com/equivalent-dose/millisieverts-to-millirem/
IEEE
Scientific Converters, "Convert Millisieverts to Millirem (mSv to mrem)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/equivalent-dose/millisieverts-to-millirem/