Sievert (Sv)
The sievert (Sv) measures equivalent and effective dose: absorbed dose weighted for the biological effect of the radiation type and the tissues exposed. One sievert carries about a 5 % added lifetime cancer risk.
Symbol: Sv
Quantity: equivalent and effective radiation dose
SI relation: Sv is the coherent SI unit of equivalent dose.
Derivation: 1 Sv = 1 J/kg weighted for radiation type (and tissue for effective dose).
Exact: yes, by definition
Typical uses
- Radiation protection limits
- Occupational and public dose
- Medical effective dose
Convert sieverts to other units
| Conversion | 1 Sv equals | Reverse |
|---|---|---|
| sievert to millisievert | 1000 mSv | millisievert to sievert |
| sievert to microsievert | 1000000 µSv | microsievert to sievert |
| sievert to rem | 100 rem | rem to sievert |
| sievert to millirem | 100000 mrem | millirem to sievert |
| sievert to nanosievert | 1000000000 nSv | nanosievert to sievert |
Open the Radiation Dose Converter (Sv, rem) to convert any value between all units.
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).
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). Sievert (Sv). Retrieved October 25, 2026, from https://scientificconverters.com/units/sievert/
IEEE
Scientific Converters, "Sievert (Sv)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/units/sievert/