Home & Build Calculators

Plywood Cut Calculator Split a sheet into equal pieces with exact kerf math and an SVG cut diagram. Stair Calculator Riser height, tread count, total run, and stringer length with a diagram and code checks. Paint Coverage Calculator Multi-room paint math with primer and topcoat coats, doors and windows subtracted. Roof Pitch & Rafter Calculator Run, rise, rafter length, roof angle, and slope factor with a cross-section diagram. Deck Board Calculator Deck boards, joist count, screw totals, and a top-down layout diagram.