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

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## 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.