Construction Calculators
Free online calculators for builders and contractors — concrete, brick, paint, roofing, lumber, and more.
Concrete & Masonry
2 Concrete volume, brick count, mortar calculators.
Building & Framing
4 Lumber, roofing, stairs, drywall calculators.
Finishing & Surface
2 Paint, flooring, tile calculators.
Excavation & Foundation
2 Digging volume, foundation, rebar calculators.
About Construction Calculators
Our construction calculators help builders, contractors, and DIY enthusiasts estimate materials and costs for building projects. Calculate concrete volume, brick counts, paint coverage, roofing materials, lumber board feet, flooring, drywall, stairs, excavation, and rebar — all free, instant results in your browser.