Convert Rem to Sieverts (rem to Sv)
1 rem = 0.01 sieverts (Sv). 1 Sv = 100 rem. Example: 5 rem = 5 × 0.01 = 0.05 Sv.
Also searched as rem to Sv, rem to sieverts and rem to sievert conversion.
1 rem = 0.01 Sv
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk rem to sievert converter to paste a column from Excel.
How to Convert Rem to Sievert
- 1 rem = 0.01 Sv
- 1 Sv = 100 rem
- Example: convert 5 rem to Sv: 5 rem = 5 × 0.01 Sv = 0.05 Sv
Formula
Sv = rem ÷ 100
Derivation from SI units:
- 1 rem = 0.01 Sv.
- 1 Sv = 1 J/kg weighted for radiation type (and tissue for effective dose).
Both units are defined exactly, so the factor is exact. Rem definition: rem; Sievert definition: sievert.
Worked examples
- The US occupational limit of 5 rem a year is 0.05 Sv.
5 rem × 0.01 = 0.05 Sv - 1 rem is 0.01 Sv.
1 rem × 0.01 = 0.01 Sv
Rem to Sievert conversion table
| Rem | Sieverts (Sv) |
|---|---|
| 0.1 rem | 0.001 Sv |
| 0.5 rem | 0.005 Sv |
| 1 rem | 0.01 Sv |
| 5 rem | 0.05 Sv |
| 10 rem | 0.1 Sv |
| 25 rem | 0.25 Sv |
| 50 rem | 0.5 Sv |
| 100 rem | 1 Sv |
| 400 rem | 4 Sv |
| 1000 rem | 10 Sv |
Where it's used
Doses in rem from US NRC rules and badge reports are converted to sieverts to compare with ICRP recommendations. Divide by 100.
Rem to other equivalent dose units
| Conversion | 1 rem equals |
|---|---|
| rem to sievert | 0.01 Sv |
| rem to millisievert | 10 mSv |
| rem to microsievert | 10000 µSv |
| rem to millirem | 1000 mrem |
| rem to nanosievert | 10000000 nSv |
Frequently asked questions
How does the US worker limit compare with ICRP?
The NRC allows 5 rem (50 mSv) a year; ICRP recommends 20 mSv a year averaged over five years, with no year above 50 mSv.
How many sieverts are in 1 rem?
1 rem = 0.01 Sv.
How do I convert rem to sieverts?
Multiply the value in rem by 0.01, or divide it by 100. For example, 5 rem × 0.01 = 0.05 Sv.
Is the rem to Sv conversion exact?
Yes. Both units are defined exactly, and 1 rem is exactly 0.01 Sv.
Sources
- 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".
- 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).
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 Rem to Sieverts (rem to Sv). Retrieved October 25, 2026, from https://scientificconverters.com/equivalent-dose/rem-to-sieverts/
IEEE
Scientific Converters, "Convert Rem to Sieverts (rem to Sv)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/equivalent-dose/rem-to-sieverts/