Nanosievert is 1e-9 sievert units.
Nanosieverts to Yoctosieverts Converter — nSv to ySv
Convert Nanosievert (nSv) to Yoctosievert (ySv) using the exact conversion factor (1 nanosievert = 1e+15 yoctosievert). See the formula, worked examples, and conversion table.
Nanosieverts to Yoctosieverts converter
Converter
Radiation Converter
Convert radioactivity, absorbed dose, and equivalent dose units by compatible radiation family.
Context values
Some unit families need one extra value for a physically accurate result.
Yoctosievert is 1e-24 sievert units.
Result = input x 1e-9 / 1e-24.
Equivalent Dose units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Nanosieverts to Yoctosieverts
Nanosievert and Yoctosievert both belong to the radiation-measurement family, though radiation quantities fall into genuinely distinct categories: absorbed dose (gray, rad) measures energy deposited in matter, equivalent dose (sievert, rem) weights that for biological harm, and activity (becquerel, curie) measures how often a radioactive source decays — this page only converts between units of the same kind. Specifically: Nanosievert is 1e-9 sievert units, and yoctosievert is 1e-24 sievert units.
Formula
yoctosieverts = nanosieverts × 1e+15
This factor comes from each unit's defined relationship to the category's base unit: 1 nanosievert equals 1e-9 base units, and 1 yoctosievert equals 1e-24 base units, so dividing one by the other gives the direct nanosievert-to-yoctosievert factor of 1e+15.
Simple example
1 nSv × 1e+15 = 1e+15 ySv
1 nanosievert = 1e+15 yoctosieverts.
Real-world example
10 nSv × 1e+15 = 1e+16 ySv
10 nanosieverts = 1e+16 yoctosieverts.
Conversion table
| Nanosievert (nSv) | Yoctosievert (ySv) |
|---|---|
| 0.001 nSv | 1e+12 ySv |
| 0.01 nSv | 1e+13 ySv |
| 0.1 nSv | 1e+14 ySv |
| 1 nSv | 1e+15 ySv |
| 10 nSv | 1e+16 ySv |
| 100 nSv | 1e+17 ySv |
Reverse conversion: Yoctosievert to Nanosievert
1e+15 ySv × 1e-15 = 1 nSv
1e+15 yoctosieverts = 1 nanosieverts.
nanosieverts = yoctosieverts × 1e-15
For a page dedicated to this direction, see Yoctosievert to Nanosievert.
Understanding the Nanosievert (nSv)
Nanosievert is 1e-9 sievert units.
Understanding the Yoctosievert (ySv)
Yoctosievert is 1e-24 sievert units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many yoctosieverts are in 1 nanosievert?
1 nanosievert equals 1e+15 yoctosieverts, using the exact defined conversion factor rather than an estimate.
How do I convert nanosievert to yoctosievert?
Multiply the nanosievert value by 1e+15. The converter above does this instantly to whatever precision you set.
How do I convert yoctosievert back to nanosievert?
Use the reverse factor: 1 yoctosievert equals 1e-15 nanosieverts. You can also use the swap control in the converter above to flip the direction instantly.
What is a nanosievert?
Nanosievert (nSv) is a unit of radiation.
What is a yoctosievert?
Yoctosievert (ySv) is a unit of radiation.
Is the nanosievert to yoctosievert conversion exact?
Yes. Both nanosievert and yoctosievert are defined by fixed standards rather than physical artifacts, so the factor of 1e+15 used above is exact to as many digits as you choose to display.
What's the difference between absorbed dose, equivalent dose, and activity?
Absorbed dose (gray, rad) measures the energy radiation deposits in matter. Equivalent dose (sievert, rem) adjusts that figure for how harmful different types of radiation are to biological tissue. Activity (becquerel, curie) measures how often a radioactive source decays, independent of how much dose a person actually receives from it.