Rontosievert is 1e-27 sievert units.
Rontosieverts to Yoctosieverts Converter — rSv to ySv
Convert Rontosievert (rSv) to Yoctosievert (ySv) using the exact conversion factor (1 rontosievert = 0.001 yoctosievert). See the formula, worked examples, and conversion table.
Rontosieverts 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-27 / 1e-24.
Equivalent Dose units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Rontosieverts to Yoctosieverts
Rontosievert 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: Rontosievert is 1e-27 sievert units, and yoctosievert is 1e-24 sievert units.
Formula
yoctosieverts = rontosieverts × 0.001
This factor comes from each unit's defined relationship to the category's base unit: 1 rontosievert equals 1e-27 base units, and 1 yoctosievert equals 1e-24 base units, so dividing one by the other gives the direct rontosievert-to-yoctosievert factor of 0.001.
Simple example
1 rSv × 0.001 = 0.001 ySv
1 rontosievert = 0.001 yoctosieverts.
Real-world example
10 rSv × 0.001 = 0.01 ySv
10 rontosieverts = 0.01 yoctosieverts.
Conversion table
| Rontosievert (rSv) | Yoctosievert (ySv) |
|---|---|
| 0.001 rSv | 0.000001 ySv |
| 0.01 rSv | 0.00001 ySv |
| 0.1 rSv | 0.0001 ySv |
| 1 rSv | 0.001 ySv |
| 10 rSv | 0.01 ySv |
| 100 rSv | 0.1 ySv |
Reverse conversion: Yoctosievert to Rontosievert
0.001 ySv × 1000 = 1 rSv
0.001 yoctosieverts = 1 rontosieverts.
rontosieverts = yoctosieverts × 1000
For a page dedicated to this direction, see Yoctosievert to Rontosievert.
Understanding the Rontosievert (rSv)
Rontosievert is 1e-27 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 rontosievert?
1 rontosievert equals 0.001 yoctosieverts, using the exact defined conversion factor rather than an estimate.
How do I convert rontosievert to yoctosievert?
Multiply the rontosievert value by 0.001. The converter above does this instantly to whatever precision you set.
How do I convert yoctosievert back to rontosievert?
Use the reverse factor: 1 yoctosievert equals 1,000 rontosieverts. You can also use the swap control in the converter above to flip the direction instantly.
What is a rontosievert?
Rontosievert (rSv) is a unit of radiation.
What is a yoctosievert?
Yoctosievert (ySv) is a unit of radiation.
Is the rontosievert to yoctosievert conversion exact?
Yes. Both rontosievert and yoctosievert are defined by fixed standards rather than physical artifacts, so the factor of 0.001 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.