WoT armor angling calc

Angling calc | DPM calc

Effective Armor Formula for Compound Angles: (Thickness/cos(angle1°))/cos(angle2°)

EA = Effective armor against ammo that have no normalization (HE/HESH/HEAT).
AP = Armor against AP/APCR/APDS rounds, that have 5° normalization.

To find the armor values for AP/APCR/APDS rounds you will use the same formula above, but only subtract the 5° normalization value off of the highest angle. Therefore, if a piece of armor is angled at 45° vertically and 30° horizontally then you will only add the normalization change to the 45° angle since it is the highest. (Source)