Convert Rem to Microsieverts (rem to µSv)
1 rem = 10000 microsieverts (µSv). 1 µSv = 0.0001 rem. Example: 15 rem = 15 × 10000 = 150000 µSv.
Also searched as rem to µSv, rem in µSv, rem into microsieverts, rem in microsieverts, rem into microsievert, rem to microsievert, rem to microsieverts converter and how many microsieverts in a rem.
1 rem = 10000 µSv
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk rem to microsievert converter to paste a column from Excel.
How to Convert Rem to Microsievert
- 1 rem = 10000 µSv
- 1 µSv = 0.0001 rem
- Example: convert 15 rem to µSv: 15 rem = 15 × 10000 µSv = 150000 µSv
Formula
µSv = rem × 10000
Derivation from SI units:
- 1 rem = 0.01 Sv.
- 1 µSv = 10⁻⁶ Sv.
- 1 rem = 0.01 Sv ÷ 0.000001 Sv per µSv = 10000 µSv
Both units are defined exactly, so the factor is exact. Rem definition: rem; Microsievert definition: microsievert.
Worked examples
- A reading of 5 rem converts to 50000 µSv.
5 rem × 10000 = 50000 µSv - A value of 50 rem is 500000 µSv.
50 rem × 10000 = 500000 µSv
Rem to Microsievert conversion table
| Rem | Microsieverts (µSv) |
|---|---|
| 0.1 rem | 1000 µSv |
| 0.5 rem | 5000 µSv |
| 1 rem | 10000 µSv |
| 5 rem | 50000 µSv |
| 10 rem | 100000 µSv |
| 25 rem | 250000 µSv |
| 50 rem | 500000 µSv |
| 100 rem | 1000000 µSv |
| 400 rem | 4000000 µSv |
| 1000 rem | 10000000 µSv |
Where it's used
Rem are used for US NRC dose limits (5 rem/yr occupational), while microsieverts appear in geiger counter and dosimeter readings (µSv/h). Both measure equivalent and effective radiation dose, so the conversion is a fixed factor.
Rem to other equivalent dose units
| Conversion | 1 rem equals |
|---|---|
| rem to microsievert | 10000 µSv |
| rem to sievert | 0.01 Sv |
| rem to millisievert | 10 mSv |
| rem to millirem | 1000 mrem |
| rem to nanosievert | 10000000 nSv |
Frequently asked questions
How many microsieverts are in 1 rem?
1 rem = 10000 µSv.
How do I convert rem to microsieverts?
Multiply the value in rem by 10000. For example, 15 rem × 10000 = 150000 µSv.
Is the rem to µSv conversion exact?
Yes. Both units are defined exactly, and 1 rem is exactly 10000 µSv.
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 Microsieverts (rem to µSv). Retrieved October 25, 2026, from https://scientificconverters.com/equivalent-dose/rem-to-microsieverts/
IEEE
Scientific Converters, "Convert Rem to Microsieverts (rem to µSv)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/equivalent-dose/rem-to-microsieverts/