Free Construction Calculators

Enter your cost and target margin; get your bid price and markup % instantly. Know your numbers before you quote.

True labor cost with payroll taxes, workers comp, benefits, and overhead. Never underbid labor again.

Stud count, top/bottom plates, and headers for any wall length and height. Accurate lumber takeoffs in seconds.

Quantity, spacing, and weight for slabs, footings, and walls. Works in feet or metric.

Cubic yards of cut, fill, and haul for rectangular and sloped sites. Includes shrinkage/swell factor.

IRC-compliant rise, run, and total stringer length. Calculates number of risers and tread depth.

Allocate your monthly overhead (insurance, trucks, office) across all active jobs as a $/hr or % rate.

Calculate the profit impact of a change order before you agree to the scope. Protect margin before the extra work starts.

Size HVAC equipment correctly for any room or whole-house load.

Calculate lumber volume for ordering and cost estimating.

Estimate CMU or brick quantities for walls and foundations.

Coverage and R-value for all insulation types and climates.

Paver count, base material, and joint sand for hardscape projects.

Asphalt tonnage and cubic yards for driveways, lots, and paths.

Block count with deadman anchor requirements for any height.

Correct rough opening for any window brand and size.

Span tables and sizing for dimensional lumber floor systems.

Truss spacing and count for gable, hip, and shed roofs.