Tool directory

Construction calculators

Eight focused tools for checking dimensions, estimating quantities, and planning a cleaner material order.

All toolsRoofing · Materials · Layout · Area · Finishes · Lumber

8 calculators

Roofing

Roof Pitch Calculator

Convert any rise and run into X:12 pitch, angle, slope, and multiplier.

Open calculator Roofing

Rafter Length Calculator

Estimate common-rafter geometry from horizontal run, roof pitch, and overhang.

Open calculator Materials

Concrete Calculator

Estimate concrete volume for rectangular slabs and footings, with waste and bag counts.

Open calculator Layout

Stair Calculator

Plan riser count, actual riser height, total run, stringer length, and angle.

Open calculator Area

Square Footage Calculator

Add multiple rectangular sections and see total square feet and square metres with waste.

Open calculator Materials

Gravel Calculator

Estimate gravel volume and weight using an editable material density.

Open calculator Finishes

Paint Calculator

Estimate paint from wall perimeter, height, coats, openings, coverage, and container size.

Open calculator Lumber

Board Foot Calculator

Calculate board feet, waste allowance, and total linear feet in imperial or metric inputs.

Open calculator