Milligray is 0.001 gray units.
Milligrays to Picograys Converter — mGy to pGy
Convert Milligray (mGy) to Picogray (pGy) using the exact conversion factor (1 milligray = 1,000,000,000 picogray). See the formula, worked examples, and conversion table.
Milligrays to Picograys 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.
Picogray is 1e-12 gray units.
Result = input x 0.001 / 1e-12.
Absorbed Dose units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Milligrays to Picograys
Milligray and Picogray 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 picogray is 1e-12 gray units.
Formula
picograys = milligrays × 1000000000
This factor comes from each unit's defined relationship to the category's base unit: 1 milligray equals 0.001 base units, and 1 picogray equals 1e-12 base units, so dividing one by the other gives the direct milligray-to-picogray factor of 1000000000.
Simple example
1 mGy × 1000000000 = 1,000,000,000 pGy
1 milligray = 1,000,000,000 picograys.
Real-world example
10 mGy × 1000000000 = 10,000,000,000 pGy
10 milligrays = 10,000,000,000 picograys.
Conversion table
| Milligray (mGy) | Picogray (pGy) |
|---|---|
| 0.001 mGy | 1,000,000 pGy |
| 0.01 mGy | 10,000,000 pGy |
| 0.1 mGy | 100,000,000 pGy |
| 1 mGy | 1,000,000,000 pGy |
| 10 mGy | 10,000,000,000 pGy |
| 100 mGy | 100,000,000,000 pGy |
Reverse conversion: Picogray to Milligray
1 pGy × 1e-9 = 1e-9 mGy
1 picogray = 1e-9 milligrays.
milligrays = picograys × 1e-9
For a page dedicated to this direction, see Picogray to Milligray.
Understanding the Milligray (mGy)
Milligray is 0.001 gray units.
Understanding the Picogray (pGy)
Picogray is 1e-12 gray units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many picograys are in 1 milligray?
1 milligray equals 1,000,000,000 picograys, using the exact defined conversion factor rather than an estimate.
How do I convert milligray to picogray?
Multiply the milligray value by 1000000000. The converter above does this instantly to whatever precision you set.
How do I convert picogray back to milligray?
Use the reverse factor: 1 picogray equals 1e-9 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 picogray?
Picogray (pGy) is a unit of radiation.
Is the milligray to picogray conversion exact?
Yes. Both milligray and picogray are defined by fixed standards rather than physical artifacts, so the factor of 1000000000 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.