Square Feet: A standard unit of area used worldwide, where one square foot equals 0.0929 square meters. Decimal: Commonly used in East India and Bangladesh. One decimal equals 1/100th of an acre, or 435.6 square feet. Convert units from decimal to square feet using this online tool. Enter the decimal value and get the equivalent value in square feet, or vice versa, with a simple formula and a table of conversions. Square feet, however, are used to quantify the area of surfaces such as floors, walls, and outdoor spaces. One square foot represents the area of a square with each side measuring one foot in length. To convert decimals to square feet, a specific conversion factor is utilized. Decimal: Commonly used in East India and Bangladesh. One decimal equals 1/100th of an acre, or 435.6 square feet. Square Feet: A standard unit of area used worldwide, where one square foot equals 0.0929 square meters.