Convert Sieverts to Millirem (Sv to mrem)
1 sievert (Sv) = 100000 millirem (mrem). 1 mrem = 0.00001 Sv. Example: 15 Sv = 15 × 100000 = 1500000 mrem.
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1 Sv = 100000 mrem
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk sievert to millirem converter to paste a column from Excel.
How to Convert Sievert to Millirem
- 1 Sv = 100000 mrem
- 1 mrem = 0.00001 Sv
- Example: convert 15 Sv to mrem: 15 Sv = 15 × 100000 mrem = 1500000 mrem
Formula
mrem = Sv × 100000
Derivation from SI units:
- 1 Sv = 1 J/kg weighted for radiation type (and tissue for effective dose).
- 1 mrem = 10⁻⁵ Sv = 10 µSv.
Both units are defined exactly, so the factor is exact. Sievert definition: sievert; Millirem definition: millirem.
Worked examples
- A reading of 0.05 Sv converts to 5000 mrem.
0.05 Sv × 100000 = 5000 mrem - A value of 0.5 Sv is 50000 mrem.
0.5 Sv × 100000 = 50000 mrem
Sievert to Millirem conversion table
| Sieverts (Sv) | Millirem (mrem) |
|---|---|
| 0.001 Sv | 100 mrem |
| 0.01 Sv | 1000 mrem |
| 0.02 Sv | 2000 mrem |
| 0.05 Sv | 5000 mrem |
| 0.1 Sv | 10000 mrem |
| 0.25 Sv | 25000 mrem |
| 0.5 Sv | 50000 mrem |
| 1 Sv | 100000 mrem |
| 4 Sv | 400000 mrem |
| 10 Sv | 1000000 mrem |
Where it's used
Sieverts are used for radiation protection limits, while millirem appear in US public dose limit (100 mrem/yr). Both measure equivalent and effective radiation dose, so the conversion is a fixed factor.
Sievert to other equivalent dose units
| Conversion | 1 Sv equals |
|---|---|
| sievert to millirem | 100000 mrem |
| sievert to millisievert | 1000 mSv |
| sievert to microsievert | 1000000 µSv |
| sievert to rem | 100 rem |
| sievert to nanosievert | 1000000000 nSv |
Frequently asked questions
How many millirem are in 1 sievert?
1 Sv = 100000 mrem.
How do I convert sieverts to millirem?
Multiply the value in Sv by 100000. For example, 15 Sv × 100000 = 1500000 mrem.
Is the Sv to mrem conversion exact?
Yes. Both units are defined exactly, and 1 Sv is exactly 100000 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 Sieverts to Millirem (Sv to mrem). Retrieved October 25, 2026, from https://scientificconverters.com/equivalent-dose/sieverts-to-millirem/
IEEE
Scientific Converters, "Convert Sieverts to Millirem (Sv to mrem)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/equivalent-dose/sieverts-to-millirem/