Conversion & General Math Tools

Construction Math & Unit Conversion Tools

Construction math does not have to be hard. Our conversion and general math tools handle the unit conversions, dimensional arithmetic, and layout calculations that come up on every project. The feet-inches-fractions calculator works like a construction-grade printing calculator — chain operations in feet, inches, and fractions with a running tape and memory registers. The board foot calculator computes lumber volume from nominal dimensions with an 18-species wood database for weight and cost estimation. The unit conversion hub converts between length, area, volume, weight, and angle units with fractional precision from 1/2 inch to 1/64 inch. The square-up calculator gives you the exact diagonal measurement to square any rectangle — essential for foundations, decks, and wall layout. The electrical load calculator helps you size panels and select wire gauge for residential circuits. All tools run in your browser with no download or signup required.