Concrete Yardage Calculator — Calculate Concrete Volume in Cubic Yards

Concrete Yardage Calculator

Calculate concrete volume in cubic yards for slabs, walls, footings, columns, and more. Estimate how much concrete you need for your construction project.

Step 1: Select Concrete Structure

Understanding Concrete Yardage

Cubic yards measure concrete volume. 1 cubic yard = 27 cubic feet = 46,656 cubic inches. Concrete is typically ordered in cubic yards from ready-mix suppliers.

Step 2: Calculation Options

% (recommended: 10-15%)

Concrete Volume Formulas

Slab: Volume = Length × Width × Thickness
Wall: Volume = Length × Height × Thickness
Footing: Volume = Length × Width × Depth
Column (Cylinder): Volume = π × Radius² × Height
Steps: Volume = Step Width × Step Rise × Step Run × Number of Steps

Concrete Yardage Calculation Results

Volume Summary
Unit Comparison
Concrete Formulas

Total Concrete Required

1.23 yd³
Slab: 10 ft × 8 ft × 0.5 ft
Approximately 56 x 80lb bags
Cubic Feet
33.33 ft³
Cubic Meters
0.94 m³
With Waste (10%)
1.35 yd³
Truck Loads
0.25 loads

Concrete Volume Unit Comparison

Unit Abbreviation Cubic Yards Equivalent Volume Common Use

Concrete Volume Calculation Formulas

Rectangular Slab

Formula: Volume = Length × Width × Thickness
Example: 10 ft × 8 ft × 0.5 ft = 40 ft³ = 1.48 yd³

Concrete Wall

Formula: Volume = Length × Height × Thickness
Example: 20 ft × 8 ft × 0.67 ft = 107.2 ft³ = 3.97 yd³

Column (Cylinder)

Formula: Volume = π × Radius² × Height (π ≈ 3.14159)
Example: Radius = 0.75 ft, Height = 10 ft → Volume = 3.14159 × 0.75² × 10 = 17.67 ft³ = 0.65 yd³

Concrete Steps

Formula: Volume = Step Width × Step Rise × Step Run × Number of Steps
Example: 3 ft × 0.67 ft × 1 ft × 3 steps = 6.03 ft³ = 0.22 yd³

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