Measure twice · calculate once

Construction calculators for every job site decision.

Concrete, roofing, lumber, drywall, excavation, electrical and more — free tools to estimate materials, volume, and cost in seconds.

Browse calculators

Concrete CalculatorsCalculate concrete volume, bags, yards, and cost for slabs, footings, columns, and more.

Roofing CalculatorsFind roof pitch, area, shingles, underlayment, squares, and roofing cost.

Lumber CalculatorsEstimate board feet, lumber quantities, framing, and studs for your project.

Flooring CalculatorsCalculate flooring area, tile, grout, laminate, and hardwood material needs.

Paint CalculatorsEstimate how much paint and coverage you need for walls, ceilings, and more.

Drywall CalculatorsEstimate drywall sheets, weight, joint compound, and drywall cost.

Landscaping CalculatorsCalculate mulch, topsoil, gravel, pea gravel, and sand volume for landscaping.

Fence CalculatorsEstimate fencing materials, posts, panels, post holes, and fence cost.

Deck CalculatorsPlan decking, joists, stairs, and deck cost for your outdoor build.

Electrical CalculatorsCalculate wire size, voltage drop, ampacity, watts-to-amps, and breaker size.

Plumbing CalculatorsEstimate pipe size, pipe volume, flow rate, and water pressure.

Masonry CalculatorsCalculate brick, concrete block, cinder block, and mortar quantities.

Excavation CalculatorsEstimate excavation volume, trenching, dirt, and backfill needs.

HVAC CalculatorsFind BTU requirements, AC size, heating load, and duct size.

General CalculatorsUseful building math: area, volume, square footage, slope, percentage, and markup.

Cost CalculatorsEstimate construction, labor, material, and total project costs by location.

Unit ConversionsConvert length, area, volume, weight, pressure, and slope units.