Feet and Inches Calculator Freeware - Version 1.0.50 Absolutely the best and easiest to use feet and inches (Architectural) calculator. The feet and inches calculator accepts all commonly used types of feet and inches input. The simple interface makes it extremely easy to use. The calculator can be closed to your system tray so it is always at your fingerips and ready to use. The units that can be shown are: Feet and Inches, Decimal Inches, Decimal Feet, and Millimeters.