Convert Megagrays to Femtograys
Convert Megagrays (MGy) to Femtograys (fGy) instantly and accurately.
Conversion Formula
fGy = MGy × 1.000000000e+21
About Megagrays
The megagray (MGy) equals 10⁶ Gy. Doses in the MGy range destroy virtually all molecular structures. Radiation chemistry of water reaches radical recombination equilibrium above 1 MGy; neutron-irradiated reactor pressure vessel steels accumulate fast-neutron damage equivalent to 0.01-1 MGy over a 40-year lifetime. 1 MGy = 10⁶ Gy = 10⁸ rad.
About Femtograys
The femtogray (fGy) equals 10⁻¹⁵ Gy, used in radiation biology to characterise the dose deposited by a single low-energy Auger electron cascade or a single traversal of a low-LET particle through a cell nucleus. Monte Carlo microdosimetry simulations of targeted radionuclide therapy report subcellular doses at the fGy level. 1 fGy = 10⁻¹⁵ Gy = 10⁻³ pGy.
Quick Reference Table
| Megagrays (MGy) | Femtograys (fGy) |
|---|---|
| 1 MGy | 1 × 1021 fGy |
| 2 MGy | 2 × 1021 fGy |
| 5 MGy | 5 × 1021 fGy |
| 10 MGy | 1 × 1022 fGy |
| 25 MGy | 2.5 × 1022 fGy |
| 50 MGy | 5 × 1022 fGy |
| 100 MGy | 1 × 1023 fGy |