Tools
Free Construction Calculators
Practical tools to help you price jobs accurately, protect your margins, and understand your true costs.
Choose a calculator
Built for contractors, by construction experts
Markup Calculator
Enter your cost and desired margin to instantly calculate the right selling price and markup percentage.
Profit Margin Calculator
Enter your cost and selling price to see your gross profit, margin percentage, and markup percentage — with a visual health indicator.
Loaded Labor Rate Calculator
Calculate the true cost per hour for your crew — including wages, payroll taxes, workers comp, insurance, and benefits.
Concrete Volume Calculator
Calculate cubic yards for slabs or columns. Enter dimensions, adjust the waste factor, and get an order-ready quantity with estimated weight.
Monolithic Slab Cost Estimator
Full cost breakdown for a monolithic slab pour — concrete, rebar, vapor barrier, gravel base, and labor with per-square-foot pricing.
Thickened Edge / Footing Calculator
Calculate the extra concrete needed for thickened edges and interior footings on a monolithic slab foundation.
Rebar Calculator
Calculate rebar or wire mesh quantities for a concrete slab — linear feet, number of bars, lap splices, and total weight by bar size.
Concrete Bag Calculator
Figure out how many bags of concrete you need for slabs or post holes. Compare 40, 60, and 80 lb bags with cost estimates.
Track it all automatically
These calculators give you a snapshot. ConstructiveCore gives you the full picture — estimating, job costing, invoicing, and financial reporting in one platform.