Convert Millirads to Femtograys
Convert Millirads (mrad) to Femtograys (fGy) instantly and accurately.
Conversion Formula
fGy = mrad × 10000000000
About Millirads
The millirad (mrad) equals 10⁻³ rad = 10⁻⁵ Gy = 10 µGy. Older US health physics reports and NRC licence conditions quote occupational extremity doses in mrad; some film badge dosimetry reports still use mrad for historical continuity. 1 mrad = 10⁻³ rad = 10⁻⁵ Gy = 10 µGy.
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
| Millirads (mrad) | Femtograys (fGy) |
|---|---|
| 1 mrad | 1 × 1010 fGy |
| 2 mrad | 2 × 1010 fGy |
| 5 mrad | 5 × 1010 fGy |
| 10 mrad | 1 × 1011 fGy |
| 25 mrad | 2.5 × 1011 fGy |
| 50 mrad | 5 × 1011 fGy |
| 100 mrad | 1 × 1012 fGy |