Convert Rads to Megagrays
Convert Rads (rad) to Megagrays (MGy) instantly and accurately.
Conversion Formula
MGy = rad × 1.000000000e-8
About Rads
The rad (rad) equals exactly 0.01 Gy = 100 erg/g. The pre-SI unit of absorbed dose, defined by the ICRU in 1953, still widely used in the US in radiation therapy (cGy = rad numerically), radiation biology, and NRC regulations. Whole-body 50% lethal dose (LD50) for humans ~350-450 rad. 1 rad = 0.01 Gy = 1 cGy.
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.
Quick Reference Table
| Rads (rad) | Megagrays (MGy) |
|---|---|
| 1 rad | 1 × 10-8 MGy |
| 2 rad | 2 × 10-8 MGy |
| 5 rad | 5 × 10-8 MGy |
| 10 rad | 1 × 10-7 MGy |
| 25 rad | 2.5 × 10-7 MGy |
| 50 rad | 5 × 10-7 MGy |
| 100 rad | 1 × 10-6 MGy |