Nanosievert (nSv)
A nanosievert is 10⁻⁹ sievert; environmental monitors often report dose rates in nSv/h (background about 50–300 nSv/h).
Symbol: nSv
Quantity: equivalent and effective radiation dose
SI relation: 1 nSv = 1 × 10⁻⁹ Sv (exact)
Derivation: 1 nSv = 10⁻⁹ Sv.
Exact: yes, by definition
Typical uses
- Environmental radiation monitoring networks
Convert nanosieverts to other units
| Conversion | 1 nSv equals | Reverse |
|---|---|---|
| nanosievert to sievert | 1 × 10⁻⁹ Sv | sievert to nanosievert |
| nanosievert to millisievert | 0.000001 mSv | millisievert to nanosievert |
| nanosievert to microsievert | 0.001 µSv | microsievert to nanosievert |
| nanosievert to rem | 1 × 10⁻⁷ rem | rem to nanosievert |
| nanosievert to millirem | 0.0001 mrem | millirem to nanosievert |
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). Nanosievert (nSv). Retrieved October 25, 2026, from https://scientificconverters.com/units/nanosievert/
IEEE
Scientific Converters, "Nanosievert (nSv)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/units/nanosievert/