Quectogray is 1e-30 gray units.
Quectograys to Yoctograys Converter — qGy to yGy
Convert Quectogray (qGy) to Yoctogray (yGy) using the exact conversion factor (1 quectogray = 0.000001 yoctogray). See the formula, worked examples, and conversion table.
Quectograys to Yoctograys 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.
Yoctogray is 1e-24 gray units.
Result = input x 1e-30 / 1e-24.
Absorbed Dose units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Quectograys to Yoctograys
Quectogray and Yoctogray 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: Quectogray is 1e-30 gray units, and yoctogray is 1e-24 gray units.
Formula
yoctograys = quectograys × 0.000001
This factor comes from each unit's defined relationship to the category's base unit: 1 quectogray equals 1e-30 base units, and 1 yoctogray equals 1e-24 base units, so dividing one by the other gives the direct quectogray-to-yoctogray factor of 0.000001.
Simple example
1 qGy × 0.000001 = 0.000001 yGy
1 quectogray = 0.000001 yoctograys.
Real-world example
10 qGy × 0.000001 = 0.00001 yGy
10 quectograys = 0.00001 yoctograys.
Conversion table
| Quectogray (qGy) | Yoctogray (yGy) |
|---|---|
| 0.001 qGy | 1e-9 yGy |
| 0.01 qGy | 1e-8 yGy |
| 0.1 qGy | 1e-7 yGy |
| 1 qGy | 0.000001 yGy |
| 10 qGy | 0.00001 yGy |
| 100 qGy | 0.0001 yGy |
Reverse conversion: Yoctogray to Quectogray
0.000001 yGy × 1000000 = 1 qGy
0.000001 yoctograys = 1 quectograys.
quectograys = yoctograys × 1000000
For a page dedicated to this direction, see Yoctogray to Quectogray.
Understanding the Quectogray (qGy)
Quectogray is 1e-30 gray units.
Understanding the Yoctogray (yGy)
Yoctogray is 1e-24 gray units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many yoctograys are in 1 quectogray?
1 quectogray equals 0.000001 yoctograys, using the exact defined conversion factor rather than an estimate.
How do I convert quectogray to yoctogray?
Multiply the quectogray value by 0.000001. The converter above does this instantly to whatever precision you set.
How do I convert yoctogray back to quectogray?
Use the reverse factor: 1 yoctogray equals 1,000,000 quectograys. You can also use the swap control in the converter above to flip the direction instantly.
What is a quectogray?
Quectogray (qGy) is a unit of radiation.
What is a yoctogray?
Yoctogray (yGy) is a unit of radiation.
Is the quectogray to yoctogray conversion exact?
Yes. Both quectogray and yoctogray 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.