All calculators

Pick a tool, type your dimensions, get yards/bags/cost — with a diagram, formula, and citations.

concrete

Concrete Calculator

Calculate cubic yards, cubic meters, and the number of 40, 60, and 80-lb concrete bags for slabs, footings, columns, and stairs. Optional price input gives a full project cost.

gravel

Gravel Calculator

Calculate cubic yards and tons of gravel for driveways, patios, and drainage. Supports pea, crushed stone, and #57 — each with the correct density.

landscaping

Mulch Calculator

Calculate cubic yards and bags of mulch for garden beds. Defaults to 3-inch depth and 2-cubic-foot bags — the most common retail size.

wall

Drywall Calculator

Calculate drywall sheets, screws, joint tape, and joint compound for a room. Subtract windows and doors for accurate totals.

tile

Tile Calculator

Calculate tiles, boxes, and cost for floors, walls, backsplashes. Configurable tile size, box quantity, and waste percentage.

deck

Deck Calculator

Calculate deck boards, joists, and posts for any rectangular deck. Configurable board width, gap, and joist spacing.

paint

Paint Calculator

Calculate gallons of paint and primer for any project. Defaults to 350 ft²/gallon coverage and 2 coats — adjust for textured surfaces.

fence

Fence Calculator

Calculate posts, rails, and pickets for any linear fence. Defaults to 8-ft post spacing and a standard 6-ft privacy fence.

lumber

Lumber Calculator

Calculate board feet, linear feet, and cost for any lumber order. Useful for framing, decking, trim, and pricing across suppliers.

flooring

Flooring Calculator

Calculate planks, boxes, and cost for laminate, hardwood, or vinyl plank flooring. Configurable plank size and waste percentage.

roofing

Roofing Calculator

Calculate squares, shingle bundles, and underlayment for pitched roofs. Includes pitch correction for accurate area.