Rontogray is 1e-27 gray units.
Rontograys to Decagrays Converter — rGy to daGy
Convert Rontogray (rGy) to Decagray (daGy) using the exact conversion factor (1 rontogray = 1e-28 decagray). See the formula, worked examples, and conversion table.
Rontograys to Decagrays 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.
Decagray is 10 gray units.
Result = input x 1e-27 / 10.
Absorbed Dose units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Rontograys to Decagrays
Rontogray and Decagray 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 decagray is 10 gray units.
Formula
decagrays = rontograys × 1e-28
This factor comes from each unit's defined relationship to the category's base unit: 1 rontogray equals 1e-27 base units, and 1 decagray equals 10 base units, so dividing one by the other gives the direct rontogray-to-decagray factor of 1e-28.
Simple example
1 rGy × 1e-28 = 1e-28 daGy
1 rontogray = 1e-28 decagrays.
Real-world example
10 rGy × 1e-28 = 1e-27 daGy
10 rontograys = 1e-27 decagrays.
Conversion table
| Rontogray (rGy) | Decagray (daGy) |
|---|---|
| 0.001 rGy | 1e-31 daGy |
| 0.01 rGy | 1e-30 daGy |
| 0.1 rGy | 1e-29 daGy |
| 1 rGy | 1e-28 daGy |
| 10 rGy | 1e-27 daGy |
| 100 rGy | 1e-26 daGy |
Reverse conversion: Decagray to Rontogray
1e-28 daGy × 1e+28 = 1 rGy
1e-28 decagrays = 1 rontogray.
rontograys = decagrays × 1e+28
For a page dedicated to this direction, see Decagray to Rontogray.
Understanding the Rontogray (rGy)
Rontogray is 1e-27 gray units.
Understanding the Decagray (daGy)
Decagray is 10 gray units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many decagrays are in 1 rontogray?
1 rontogray equals 1e-28 decagrays, using the exact defined conversion factor rather than an estimate.
How do I convert rontogray to decagray?
Multiply the rontogray value by 1e-28. The converter above does this instantly to whatever precision you set.
How do I convert decagray back to rontogray?
Use the reverse factor: 1 decagray equals 1e+28 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 decagray?
Decagray (daGy) is a unit of radiation.
Is the rontogray to decagray conversion exact?
Yes. Both rontogray and decagray are defined by fixed standards rather than physical artifacts, so the factor of 1e-28 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.