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

Anodizing Amperage Calculator

Amperage & Area
720 Rule (ASF)

Enter any 3 values to calculate the missing variable.

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.