Megagray is 1000000 gray units.
Megagrays to Centigrays Converter — MGy to cGy
Convert Megagray (MGy) to Centigray (cGy) using the exact conversion factor (1 megagray = 100,000,000 centigray). See the formula, worked examples, and conversion table.
Megagrays to Centigrays 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.
Centigray is 0.01 gray units.
Result = input x 1e+6 / 0.01.
Absorbed Dose units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Megagrays to Centigrays
Megagray and Centigray 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: Megagray is 1000000 gray units, and centigray is 0.01 gray units.
Formula
centigrays = megagrays × 100000000
This factor comes from each unit's defined relationship to the category's base unit: 1 megagray equals 1000000 base units, and 1 centigray equals 0.01 base units, so dividing one by the other gives the direct megagray-to-centigray factor of 100000000.
Simple example
1 MGy × 100000000 = 100,000,000 cGy
1 megagray = 100,000,000 centigrays.
Real-world example
10 MGy × 100000000 = 1,000,000,000 cGy
10 megagrays = 1,000,000,000 centigrays.
Conversion table
| Megagray (MGy) | Centigray (cGy) |
|---|---|
| 0.001 MGy | 100,000 cGy |
| 0.01 MGy | 1,000,000 cGy |
| 0.1 MGy | 10,000,000 cGy |
| 1 MGy | 100,000,000 cGy |
| 10 MGy | 1,000,000,000 cGy |
| 100 MGy | 10,000,000,000 cGy |
Reverse conversion: Centigray to Megagray
1 cGy × 1e-8 = 1e-8 MGy
1 centigray = 1e-8 megagrays.
megagrays = centigrays × 1e-8
For a page dedicated to this direction, see Centigray to Megagray.
Understanding the Megagray (MGy)
Megagray is 1000000 gray units.
Understanding the Centigray (cGy)
Centigray is 0.01 gray units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many centigrays are in 1 megagray?
1 megagray equals 100,000,000 centigrays, using the exact defined conversion factor rather than an estimate.
How do I convert megagray to centigray?
Multiply the megagray value by 100000000. The converter above does this instantly to whatever precision you set.
How do I convert centigray back to megagray?
Use the reverse factor: 1 centigray equals 1e-8 megagrays. You can also use the swap control in the converter above to flip the direction instantly.
What is a megagray?
Megagray (MGy) is a unit of radiation.
What is a centigray?
Centigray (cGy) is a unit of radiation.
Is the megagray to centigray conversion exact?
Yes. Both megagray and centigray are defined by fixed standards rather than physical artifacts, so the factor of 100000000 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.