Yoctogray is 1e-24 gray units.
Yoctograys to Quectograys Converter — yGy to qGy
Convert Yoctogray (yGy) to Quectogray (qGy) using the exact conversion factor (1 yoctogray = 1,000,000 quectogray). See the formula, worked examples, and conversion table.
Yoctograys to Quectograys 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.
Quectogray is 1e-30 gray units.
Result = input x 1e-24 / 1e-30.
Absorbed Dose units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Yoctograys to Quectograys
Yoctogray and Quectogray 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: Yoctogray is 1e-24 gray units, and quectogray is 1e-30 gray units.
Formula
quectograys = yoctograys × 1000000
This factor comes from each unit's defined relationship to the category's base unit: 1 yoctogray equals 1e-24 base units, and 1 quectogray equals 1e-30 base units, so dividing one by the other gives the direct yoctogray-to-quectogray factor of 1000000.
Simple example
1 yGy × 1000000 = 1,000,000 qGy
1 yoctogray = 1,000,000 quectograys.
Real-world example
10 yGy × 1000000 = 10,000,000 qGy
10 yoctograys = 10,000,000 quectograys.
Conversion table
| Yoctogray (yGy) | Quectogray (qGy) |
|---|---|
| 0.001 yGy | 1,000 qGy |
| 0.01 yGy | 10,000 qGy |
| 0.1 yGy | 100,000 qGy |
| 1 yGy | 1,000,000 qGy |
| 10 yGy | 10,000,000 qGy |
| 100 yGy | 100,000,000 qGy |
Reverse conversion: Quectogray to Yoctogray
1 qGy × 0.000001 = 0.000001 yGy
1 quectogray = 0.000001 yoctograys.
yoctograys = quectograys × 0.000001
For a page dedicated to this direction, see Quectogray to Yoctogray.
Understanding the Yoctogray (yGy)
Yoctogray is 1e-24 gray units.
Understanding the Quectogray (qGy)
Quectogray is 1e-30 gray units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many quectograys are in 1 yoctogray?
1 yoctogray equals 1,000,000 quectograys, using the exact defined conversion factor rather than an estimate.
How do I convert yoctogray to quectogray?
Multiply the yoctogray value by 1000000. The converter above does this instantly to whatever precision you set.
How do I convert quectogray back to yoctogray?
Use the reverse factor: 1 quectogray equals 0.000001 yoctograys. You can also use the swap control in the converter above to flip the direction instantly.
What is a yoctogray?
Yoctogray (yGy) is a unit of radiation.
What is a quectogray?
Quectogray (qGy) is a unit of radiation.
Is the yoctogray to quectogray conversion exact?
Yes. Both yoctogray and quectogray are defined by fixed standards rather than physical artifacts, so the factor of 1000000 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.