Measurement tools

Measurement calculators

Calculate area, perimeter, room surfaces, and stair geometry before estimating project materials.

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Measurement calculators

Open a calculator to see its formula, assumptions, worked example, and related planning tools.

Square Footage CalculatorCalculate floor, wall, or project area.Ready Room Area CalculatorCalculate room floor and wall areas.Ready Stair CalculatorPlan stair rise, run, tread count, and stringer length.Ready

Planning guidance

Before you calculate

Keep units consistent within each calculation.
Divide complex plans into simple non-overlapping shapes.
Measure twice and retain the inputs used for ordering.

Related project areas

Continue your estimate