This calculator utilizes the information published on this website to estimate the milling rates for various materials. The equation used to by the calculator is:

R = I_{s}(T_{d}) * (I_{b}/120) * R_{material}(V_{b}),

where R is the mill rate in [nm/min], I_{s} is the ion source current density in [mA/cm^{2}] measured at a distance T_{d}, I_{b} is the programmed ion beam current in [mA], and R_{material} is the material mill rate in [nm/min] when the ion beam voltage is V_{b}. I_{b} is scaled by 120 [mA] because that is the condition used when measuring I_{s}(T_{d}).