Gravel Calculator by Square Footage Formula

Gravel Volume Formula:

\[ V = \frac{A \times D}{27} \]

Gravel Volume (cu yd):

Definition: This calculator estimates the volume of gravel needed based on the area to be covered and the desired depth of gravel.

Purpose: It helps homeowners and contractors determine how much gravel is required for landscaping, driveways, or construction projects.

The calculator uses the formula:

\[ V = \frac{A \times D}{27} \]

Where:

Explanation: The area is multiplied by depth to get cubic feet, then divided by 27 to convert to cubic yards.

Details: Accurate gravel estimation prevents material shortages or excess, ensures proper project budgeting, and helps with logistics planning.

Tips: Enter the area in square feet and desired depth in inches. The calculator automatically converts depth to feet for the calculation.

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: What's a typical gravel depth?
A: For driveways, 4-6 inches is common. For walkways, 2-3 inches. For drainage, 8-12 inches may be needed.

Q3: Should I add extra for compaction?
A: Yes, consider adding 10-20% more volume to account for compaction, especially for driveways.

Q4: How do I measure irregular areas?
A: Break into rectangles, calculate each, then sum. For circles, use πr² (3.14 × radius × radius).

Q5: How many square feet does a cubic yard cover?
A: At 3 inches deep, 1 cubic yard covers about 108 square feet (27 ÷ 0.25 = 108).

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