Free Construction Calculators

Calculate how many standard 16×8 in concrete blocks you need for any wall — with mortar and a waste allowance.

Calculate exactly how much concrete you need for a slab, footing, post hole, column or wall — in cubic yards, cubic feet and bags, with cost estimates.

Convert any volume between cubic feet, cubic yards, cubic inches, cubic meters and gallons — or calculate it from length, width and height.

Estimate the materials for a wood deck — decking boards, joists, posts and concrete footings — for any deck size.

Calculate how many sheets of drywall you need for any room — walls and ceiling — in 4×8, 4×10 or 4×12 sheets.

Estimate the materials for a wood privacy fence — posts, fast-setting concrete, pickets and rails — for any length and height.

Calculate how much gravel you need for a path, driveway or garden bed — in cubic yards, tons and 0.5 cu ft bags.

Calculate board feet and cost for any lumber size — 2×4, 2×6, 4×4 and more — in seconds.

Calculate how much mulch you need for any garden bed — in cubic yards, cubic feet and 2 cu ft bags — at the depth your plants actually need.

Estimate how many gallons of paint you need for any room or exterior — walls, ceilings, doors and windows included — for one or two coats.

Calculate roof area, roofing squares and shingle bundles for any footprint and pitch — from 3/12 to 12/12.

Calculate the square footage of any room, house or surface — rectangles, circles, triangles, L-shapes and more — in square feet, inches and meters.

Calculate how many tiles you need for any floor or wall — in any format — with a waste allowance for cuts.