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