Construction & DIY Calculators

Every calculator shows its formula, a worked example and its sources.

Embed any calculator on your site · Open data: Florida contractor licenses by county

Concrete

• Concrete Slab Calculator (Cubic Yards & Bags)
• Concrete Column & Sonotube Calculator
• Concrete Footing Calculator (Continuous Wall Footings)

Interior

• Paint Calculator (Gallons for Walls)
• Drywall Calculator (Sheets Needed)
• Flooring & Tile Calculator (Square Feet & Boxes)

Exterior

• Roofing Calculator (Squares, Bundles & Pitch Factor)
• Deck Board Calculator
• Fence Calculator (Posts, Rails & Pickets)

Landscape

• Mulch, Gravel & Topsoil Calculator (Cubic Yards)

Electrical

• Wire Size & Voltage Drop Calculator (AWG, Copper/Aluminum)

HVAC

• Room AC BTU Calculator (ENERGY STAR Sizing)

Energy

• Insulation R-Value Thickness Calculator
• Solar Panel Calculator (How Many Panels Do I Need?)

Pool

• Pool Volume Calculator: Rectangular (Gallons)
• Pool Volume Calculator: Round / Above-Ground (Gallons)
• Pool Volume Calculator: Oval (Gallons)

Lumber

• Board Foot Calculator (Lumber)

Paving

• Asphalt Calculator (Tons for Driveways)