20mm Gravel Coverage Calculator Yards

20mm Gravel Volume Formula:

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

Gravel Volume (cu yd):

Definition: This calculator estimates the volume of 20mm gravel needed based on the area's length, width, and depth measurements.

Purpose: It helps determine how much 20mm gravel is required for landscaping, construction, or drainage projects.

The calculator uses the formula:

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

Where:

Explanation: The calculator multiplies length, width and depth to get cubic feet, then converts to cubic yards.

Details: Proper gravel volume estimation ensures adequate coverage, proper drainage, and cost-effective material purchasing.

Tips: Enter the area dimensions in feet and desired depth in feet. All values must be > 0.

Q1: Why 20mm gravel specifically?
A: 20mm gravel is a common size for drainage and landscaping. The calculation works for other sizes too.

Q2: Why divide by 27?
A: There are 27 cubic feet in 1 cubic yard, which is the standard measurement unit for bulk materials.

Q3: How do I convert inches to feet for depth?
A: Divide inches by 12 (e.g., 6 inches = 0.5 feet).

Q4: Does this account for compaction?
A: No, consider adding 10-15% to the calculated volume if compaction is expected.

Q5: How much area does 1 cubic yard cover?
A: At 2 inches depth, 1 cu yd covers about 160 sq ft. At 4 inches, about 80 sq ft.

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