How to convert from square feet (ft2) to cubic meters (m3)?
The area in square feet (ft2) must be multiplied by the thickness in feet and divide by 35.3. The result is a volume of cubic meters (m3).
1 m3 ≈ 1 ft2 * 1 ft / 35.3
1 m3 = 1 ft2 * 1 ft / (1/0.3048*1/0.3048*1/0.3048) ≈ 1 ft2 * 1 ft / 35.314667
1 ft = 0.3048 m ⇒ 1 m = 1/0.3048 ft