SAE Fractional Calculator

Objectives

A desktop calculator built for DIY and construction projects that use imperial (SAE) measurements. Lengths are entered the way you say them — yards, feet, inches, and fractions of an inch — and every computation is done exactly on a 1/32″ grid, so results always land on your tape measure.

  • Natural entry: 1 ft 6 in 1 /2 + 2 ft 5 in 3 /4 = gives 4′ 0-1/4″
  • Dedicated denominator keys (/2, /4, /8, /16, /32) — impossible to enter a fraction that is not on the grid
  • Exact arithmetic in integer 1/32″ units; results always shown in feet-inches with reduced fractions
  • Full keyboard entry, light and dark themes

Download

Free standalone application for Windows — a single .exe file, no installation required.

Use It in Your Browser Download for Windows Source on GitHub

The browser version at saecalculator.com works on phones too: open it and choose "Add to Home Screen" to install it like an app.

The download button brings you to the GitHub release page: scroll down to the Assets section and click saeCalculator.exe to download the application.

Windows may show a SmartScreen notice on first run because the download is unsigned; choose "More info", then "Run anyway".

SAE Fractional Calculator main window