Find correct diagonal to 'Square Up' a square or rectangle

Calculate and draw a diagram with diagonals to square up on-site set out.

SquareUp is a simple app to help square up on-site setout.

Just enter 2 side lengths and hit Calculate to draw a diagram with the correct diagonal marked, to layout your square or rectangle with 90 degree (square) corners.

Simple and uncluttered UI (inputs) makes it fast and easy to find correct diagonals on-site, when you don’t want to have to remember complex functions and formulas on your multi function (multi button) calculator.

You can also enter Thickness (or depth) to calculate cubic volume, for fill or concrete slabs.

Enter Inches and Fraction separated by spaces, or Decimal Inches. Eg: 38 3 4 = 3'2~3/4" - or 38.75 = 3'2~3/4".