The ultimate toolkit for contractors and DIYers. Don't eyeball your materials. Use our free web tools to calculate exact yardage, squares, and BTU counts in seconds.
Master the math behind your projects. Expert insights, formulas, and contractor guides.
How to manually estimate sheets, taping joint compounds, screw volumes, and professional labor rates.
Calculate raw yardage, ready-mix truck delivery rules, short-load fees, and rebar reinforcement formulas.
Learn Manual J heat load sizing, regional climate multipliers, wall insulation variables, and AC tonnage sizers.
Calculate roofing squares, bundles of shingles, starter strips, nails, and underlayment rolls.
How to estimate structural post spacing, vertical privacy pickets, horizontal rails, and concrete mix.
Determine flooring box packaging counts, layout wastes, underlayments, and door transitions.
Calculate interlocking block counts, buried base rows, drainage pipes, and structural backfill gravel.
Calculate paint coverage per gallon, window and door surface deductions, and fresh drywall absorption.
Estimate deck board rows, drainage gaps, joist spans, and hidden fastener screw counts.
How to convert square feet to cubic yards of mulch and compost, and bag count equivalents.