Concrete slab
Cubic yards, bag count, ready-mix delivery, and thickness tradeoffs.
Project planning guides and calculators
Choose a project below. Each guide covers measuring, order-unit assumptions and decisions that can change the purchase quantity. Use its calculator for your own dimensions.
Deck
Deck board and framing allowances, material pricing, and layout.
Roof
Roof pitch, waste, squares, and bundle rounding.
Interior paint
Wall area, openings, coat count, and gallon coverage.
Flooring
Floor area, cutting waste, package size, and purchase rounding.
Before purchasing materials
Measure each distinct surface or section, document openings and exclusions, verify supplier coverage or yield, and request an itemized quote. The quote comparison tool helps compare package rounding and fixed charges across two suppliers.
Important limitations
Estimates are for planning only. They do not replace product instructions, building-code checks, structural design or licensed contractor advice. See the calculation methodology.