Back to Calculators Air to Cloth Ratio Calculator Air to Cloth Ratio Calculator for Filter Bags & Pleated Elements Baghouse Air to Cloth Ratio CalculatorEnter the ACFM of Air ÷ Sq. Ft. of ClothThen Click on Calculate To Find the Air to Cloth RatioACFM ÷ Sq. Ft of Cloth Air to Cloth Ratio = to 1