Gray measures radioactivity, absorbed dose, or exposure. Radiation units describe decay rates, ionizing energy, and biological dose effects.
Gray / Roentgen
Estimate photon exposure in roentgens after specifying the medium and energy.
Unit definitions
Roentgen measures radioactivity, absorbed dose, or exposure. Radiation units describe decay rates, ionizing energy, and biological dose effects.
How to convert Gray to Roentgen
This is a three-variable conversion. Enter any two of the three values — Gray, Roentgen, and Gray / Roentgen — and the third will be calculated automatically.