Concrete Calculator

Length (feet)

Width (feet)

Thickness (inches)

Number of Slabs

Waste Factor (%)

Price per Cubic Yard ($)

Length (feet)

Width (feet)

Depth (feet)

Number of Footings

Waste Factor (%)

Price per Cubic Yard ($)

Column Type

Height (feet)

Diameter (inches)

Side Length (inches)

Length (inches)

Width (inches)

Number of Columns

Price per Cubic Yard ($)

Width (feet)

Rise per Step (inches)

Run per Step (inches)

Number of Steps

Waste Factor (%)

Price per Cubic Yard ($)

Concrete Calculation Guidelines

Common Concrete Mixes:

80 lb bag: Covers 0.6 cubic feet
60 lb bag: Covers 0.45 cubic feet
1 cubic yard: Equals 27 cubic feet

Standard Thickness:

Walkways: 4 inches
Driveways: 4-6 inches
Garage floors: 6 inches
Footings: Typically 12-18 inches deep

Important Tips:

Always order 5-10% extra concrete for waste and spillage
Ready-mix concrete is sold by cubic yard
Bags are better for small projects; ready-mix for large
Consider reinforcement (rebar or mesh) for structural projects
Concrete must be poured within 90 minutes of mixing