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Construction Calculators

Quick square footage, gravel volume, and roofing quantity estimates for homeowners and DIYers. Enter dimensions, get results as you type.

Square Footage Calculator

Rectangles, multiple rooms, triangles, and circles. Square feet and square meters.

Cubic yards and tons from length, width, and depth, with a waste toggle.

Roof squares and shingle bundles from footprint and pitch, with waste.

Estimates only — not a contractor quote. Add waste for cuts and spillage, and verify quantities with your supplier before you buy material.