Enter the total square footage, minutes, and thickness in mils into the calculator to determine the anodizing amperage.

Anodizing Amperage Formula

The following equation is used to calculate the Anodizing Amperage.

AA = (720*SF)/T * Mils

  • Where AA is the anodizing amperage
  • SF is the square footage
  • T is the time (minutes)
  • mils is the thickness (1mil = .001″)

This formula is known as the 720 rule for anodizing.