Convert Sieverts to Nanosieverts (Sv to nSv)
1 sievert (Sv) = 1000000000 nanosieverts (nSv). 1 nSv = 1 × 10⁻⁹ Sv. Example: 15 Sv = 15 × 1000000000 = 15000000000 nSv.
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1 Sv = 1000000000 nSv
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk sievert to nanosievert converter to paste a column from Excel.
How to Convert Sievert to Nanosievert
- 1 Sv = 1000000000 nSv
- 1 nSv = 1 × 10⁻⁹ Sv
- Example: convert 15 Sv to nSv: 15 Sv = 15 × 1000000000 nSv = 15000000000 nSv
Formula
nSv = Sv × 1000000000
Derivation from SI units:
- 1 Sv = 1 J/kg weighted for radiation type (and tissue for effective dose).
- 1 nSv = 10⁻⁹ Sv.
Both units are defined exactly, so the factor is exact. Sievert definition: sievert; Nanosievert definition: nanosievert.
Worked examples
- A reading of 0.05 Sv converts to 50000000 nSv.
0.05 Sv × 1000000000 = 50000000 nSv - A value of 0.5 Sv is 500000000 nSv.
0.5 Sv × 1000000000 = 500000000 nSv
Sievert to Nanosievert conversion table
| Sieverts (Sv) | Nanosieverts (nSv) |
|---|---|
| 0.001 Sv | 1000000 nSv |
| 0.01 Sv | 10000000 nSv |
| 0.02 Sv | 20000000 nSv |
| 0.05 Sv | 50000000 nSv |
| 0.1 Sv | 100000000 nSv |
| 0.25 Sv | 250000000 nSv |
| 0.5 Sv | 500000000 nSv |
| 1 Sv | 1000000000 nSv |
| 4 Sv | 4000000000 nSv |
| 10 Sv | 10000000000 nSv |
Where it's used
Sieverts are used for radiation protection limits, while nanosieverts appear in environmental radiation monitoring networks. 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 nanosievert | 1000000000 nSv |
| sievert to millisievert | 1000 mSv |
| sievert to microsievert | 1000000 µSv |
| sievert to rem | 100 rem |
| sievert to millirem | 100000 mrem |
Frequently asked questions
How many nanosieverts are in 1 sievert?
1 Sv = 1000000000 nSv.
How do I convert sieverts to nanosieverts?
Multiply the value in Sv by 1000000000. For example, 15 Sv × 1000000000 = 15000000000 nSv.
Is the Sv to nSv conversion exact?
Yes. Both units are defined exactly, and 1 Sv is exactly 1000000000 nSv.
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). Convert Sieverts to Nanosieverts (Sv to nSv). Retrieved October 25, 2026, from https://scientificconverters.com/equivalent-dose/sieverts-to-nanosieverts/
IEEE
Scientific Converters, "Convert Sieverts to Nanosieverts (Sv to nSv)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/equivalent-dose/sieverts-to-nanosieverts/