Quectogray is 1e-30 gray units.
Quectograys to Rontograys Converter — qGy to rGy
Convert Quectogray (qGy) to Rontogray (rGy) using the exact conversion factor (1 quectogray = 0.001 rontogray). See the formula, worked examples, and conversion table.
Quectograys to Rontograys 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.
Rontogray is 1e-27 gray units.
Result = input x 1e-30 / 1e-27.
Absorbed Dose units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Quectograys to Rontograys
Quectogray and Rontogray 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 rontogray is 1e-27 gray units.
Formula
rontograys = quectograys × 0.001
This factor comes from each unit's defined relationship to the category's base unit: 1 quectogray equals 1e-30 base units, and 1 rontogray equals 1e-27 base units, so dividing one by the other gives the direct quectogray-to-rontogray factor of 0.001.
Simple example
1 qGy × 0.001 = 0.001 rGy
1 quectogray = 0.001 rontograys.
Real-world example
10 qGy × 0.001 = 0.01 rGy
10 quectograys = 0.01 rontograys.
Conversion table
| Quectogray (qGy) | Rontogray (rGy) |
|---|---|
| 0.001 qGy | 0.000001 rGy |
| 0.01 qGy | 0.00001 rGy |
| 0.1 qGy | 0.0001 rGy |
| 1 qGy | 0.001 rGy |
| 10 qGy | 0.01 rGy |
| 100 qGy | 0.1 rGy |
Reverse conversion: Rontogray to Quectogray
0.001 rGy × 1000 = 1 qGy
0.001 rontograys = 1 quectogray.
quectograys = rontograys × 1000
For a page dedicated to this direction, see Rontogray to Quectogray.
Understanding the Quectogray (qGy)
Quectogray is 1e-30 gray units.
Understanding the Rontogray (rGy)
Rontogray is 1e-27 gray units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many rontograys are in 1 quectogray?
1 quectogray equals 0.001 rontograys, using the exact defined conversion factor rather than an estimate.
How do I convert quectogray to rontogray?
Multiply the quectogray value by 0.001. The converter above does this instantly to whatever precision you set.
How do I convert rontogray back to quectogray?
Use the reverse factor: 1 rontogray equals 1,000 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 rontogray?
Rontogray (rGy) is a unit of radiation.
Is the quectogray to rontogray conversion exact?
Yes. Both quectogray and rontogray 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.