Teragray is 1000000000000 gray units.
Teragrays to Megagrays Converter — TGy to MGy
Convert Teragray (TGy) to Megagray (MGy) using the exact conversion factor (1 teragray = 1,000,000 megagray). See the formula, worked examples, and conversion table.
Teragrays to Megagrays 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.
Megagray is 1000000 gray units.
Result = input x 1e+12 / 1e+6.
Absorbed Dose units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Teragrays to Megagrays
Teragray and Megagray 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: Teragray is 1000000000000 gray units, and megagray is 1000000 gray units.
Formula
megagrays = teragrays × 1000000
This factor comes from each unit's defined relationship to the category's base unit: 1 teragray equals 1e+12 base units, and 1 megagray equals 1000000 base units, so dividing one by the other gives the direct teragray-to-megagray factor of 1000000.
Simple example
1 TGy × 1000000 = 1,000,000 MGy
1 teragray = 1,000,000 megagrays.
Real-world example
10 TGy × 1000000 = 10,000,000 MGy
10 teragrays = 10,000,000 megagrays.
Conversion table
| Teragray (TGy) | Megagray (MGy) |
|---|---|
| 0.001 TGy | 1,000 MGy |
| 0.01 TGy | 10,000 MGy |
| 0.1 TGy | 100,000 MGy |
| 1 TGy | 1,000,000 MGy |
| 10 TGy | 10,000,000 MGy |
| 100 TGy | 100,000,000 MGy |
Reverse conversion: Megagray to Teragray
1 MGy × 0.000001 = 0.000001 TGy
1 megagray = 0.000001 teragrays.
teragrays = megagrays × 0.000001
For a page dedicated to this direction, see Megagray to Teragray.
Understanding the Teragray (TGy)
Teragray is 1000000000000 gray units.
Understanding the Megagray (MGy)
Megagray is 1000000 gray units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many megagrays are in 1 teragray?
1 teragray equals 1,000,000 megagrays, using the exact defined conversion factor rather than an estimate.
How do I convert teragray to megagray?
Multiply the teragray value by 1000000. The converter above does this instantly to whatever precision you set.
How do I convert megagray back to teragray?
Use the reverse factor: 1 megagray equals 0.000001 teragrays. You can also use the swap control in the converter above to flip the direction instantly.
What is a teragray?
Teragray (TGy) is a unit of radiation.
What is a megagray?
Megagray (MGy) is a unit of radiation.
Is the teragray to megagray conversion exact?
Yes. Both teragray and megagray are defined by fixed standards rather than physical artifacts, so the factor of 1000000 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.