Yoctosievert is 1e-24 sievert units.
Yoctosieverts to Attosieverts Converter — ySv to aSv
Convert Yoctosievert (ySv) to Attosievert (aSv) using the exact conversion factor (1 yoctosievert = 0.000001 attosievert). See the formula, worked examples, and conversion table.
Yoctosieverts to Attosieverts 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.
Attosievert is 1e-18 sievert units.
Result = input x 1e-24 / 1e-18.
Equivalent Dose units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Yoctosieverts to Attosieverts
Yoctosievert and Attosievert 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: Yoctosievert is 1e-24 sievert units, and attosievert is 1e-18 sievert units.
Formula
attosieverts = yoctosieverts × 0.000001
This factor comes from each unit's defined relationship to the category's base unit: 1 yoctosievert equals 1e-24 base units, and 1 attosievert equals 1e-18 base units, so dividing one by the other gives the direct yoctosievert-to-attosievert factor of 0.000001.
Simple example
1 ySv × 0.000001 = 0.000001 aSv
1 yoctosievert = 0.000001 attosieverts.
Real-world example
10 ySv × 0.000001 = 0.00001 aSv
10 yoctosieverts = 0.00001 attosieverts.
Conversion table
| Yoctosievert (ySv) | Attosievert (aSv) |
|---|---|
| 0.001 ySv | 1e-9 aSv |
| 0.01 ySv | 1e-8 aSv |
| 0.1 ySv | 1e-7 aSv |
| 1 ySv | 0.000001 aSv |
| 10 ySv | 0.00001 aSv |
| 100 ySv | 0.0001 aSv |
Reverse conversion: Attosievert to Yoctosievert
0.000001 aSv × 1000000 = 1 ySv
0.000001 attosieverts = 1 yoctosieverts.
yoctosieverts = attosieverts × 1000000
For a page dedicated to this direction, see Attosievert to Yoctosievert.
Understanding the Yoctosievert (ySv)
Yoctosievert is 1e-24 sievert units.
Understanding the Attosievert (aSv)
Attosievert is 1e-18 sievert units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many attosieverts are in 1 yoctosievert?
1 yoctosievert equals 0.000001 attosieverts, using the exact defined conversion factor rather than an estimate.
How do I convert yoctosievert to attosievert?
Multiply the yoctosievert value by 0.000001. The converter above does this instantly to whatever precision you set.
How do I convert attosievert back to yoctosievert?
Use the reverse factor: 1 attosievert equals 1,000,000 yoctosieverts. You can also use the swap control in the converter above to flip the direction instantly.
What is a yoctosievert?
Yoctosievert (ySv) is a unit of radiation.
What is a attosievert?
Attosievert (aSv) is a unit of radiation.
Is the yoctosievert to attosievert conversion exact?
Yes. Both yoctosievert and attosievert are defined by fixed standards rather than physical artifacts, so the factor of 0.000001 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.