Free Concrete Calculator Cubic Yards

Concrete Volume Formula:

\[ V = \frac{L \times W \times D}{27} \]

Concrete Volume (cu yd):

Definition: This calculator estimates the volume of concrete needed for a project based on length, width, and depth measurements.

Purpose: It helps construction professionals and DIYers determine how much concrete is required for slabs, footings, and other projects.

The calculator uses the formula:

\[ V = \frac{L \times W \times D}{27} \]

Where:

Explanation: The length, width, and depth are multiplied to get cubic feet, then divided by 27 to convert to cubic yards.

Details: Accurate concrete volume estimation prevents material shortages, reduces waste, and ensures proper project budgeting.

Tips: Measure the length and width in feet, and enter the depth in feet (convert inches to feet by dividing by 12). All values must be > 0.

Q1: Why divide by 27?
A: There are 27 cubic feet in 1 cubic yard (3 feet × 3 feet × 3 feet = 27 cubic feet).

Q2: How do I convert inches to feet?
A: Divide inches by 12 (e.g., 6 inches = 0.5 feet).

Q3: What's a typical slab thickness?
A: 4 inches (0.33 feet) for sidewalks, 6 inches (0.5 feet) for driveways, and 8-12 inches for foundations.

Q4: How much extra should I order?
A: It's recommended to order 5-10% more concrete than calculated to account for spillage and uneven subgrades.

Q5: Can I calculate multiple areas?
A: Calculate each section separately and add the volumes together for the total concrete needed.

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