Milligray is 0.001 gray units.
Milligrays to Decigrays Converter — mGy to dGy
Convert Milligray (mGy) to Decigray (dGy) using the exact conversion factor (1 milligray = 0.01 decigray). See the formula, worked examples, and conversion table.
Milligrays to Decigrays 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.
Decigray is 0.1 gray units.
Result = input x 0.001 / 0.1.
Absorbed Dose units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Milligrays to Decigrays
Milligray and Decigray 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: Milligray is 0.001 gray units, and decigray is 0.1 gray units.
Formula
decigrays = milligrays × 0.01
This factor comes from each unit's defined relationship to the category's base unit: 1 milligray equals 0.001 base units, and 1 decigray equals 0.1 base units, so dividing one by the other gives the direct milligray-to-decigray factor of 0.01.
Simple example
1 mGy × 0.01 = 0.01 dGy
1 milligray = 0.01 decigrays.
Real-world example
10 mGy × 0.01 = 0.1 dGy
10 milligrays = 0.1 decigrays.
Conversion table
| Milligray (mGy) | Decigray (dGy) |
|---|---|
| 0.001 mGy | 0.00001 dGy |
| 0.01 mGy | 0.0001 dGy |
| 0.1 mGy | 0.001 dGy |
| 1 mGy | 0.01 dGy |
| 10 mGy | 0.1 dGy |
| 100 mGy | 1 dGy |
Reverse conversion: Decigray to Milligray
0.01 dGy × 100 = 1 mGy
0.01 decigrays = 1 milligray.
milligrays = decigrays × 100
For a page dedicated to this direction, see Decigray to Milligray.
Understanding the Milligray (mGy)
Milligray is 0.001 gray units.
Understanding the Decigray (dGy)
Decigray is 0.1 gray units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many decigrays are in 1 milligray?
1 milligray equals 0.01 decigrays, using the exact defined conversion factor rather than an estimate.
How do I convert milligray to decigray?
Multiply the milligray value by 0.01. The converter above does this instantly to whatever precision you set.
How do I convert decigray back to milligray?
Use the reverse factor: 1 decigray equals 100 milligrays. You can also use the swap control in the converter above to flip the direction instantly.
What is a milligray?
Milligray (mGy) is a unit of radiation.
What is a decigray?
Decigray (dGy) is a unit of radiation.
Is the milligray to decigray conversion exact?
Yes. Both milligray and decigray are defined by fixed standards rather than physical artifacts, so the factor of 0.01 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.