Free tools
Free Construction Calculators
Quick, free calculators for contractors and estimators, no sign-up. When you need quantities off a real plan, take them off to scale in ContractorCounter.
Concrete calculator
Volume, bags, and cost for slabs, footings, and columns.
Square footage calculator
Area in ft² and m² for rooms, walls, and irregular spaces.
Markup & margin calculator
Turn cost into price: markup, margin, and profit, no confusion.
Board foot calculator
Board feet and cost for lumber from dimensions and quantity.