Gravel Volume Formula:
Definition: This calculator estimates the volume of gravel needed based on the length, width, and depth of the area to be covered.
Purpose: It helps construction professionals and DIYers determine how much gravel is required for projects like driveways, walkways, and foundations.
The calculator uses the formula:
Where:
Explanation: The calculator multiplies length × width × depth (converted to feet) then divides by 27 to convert cubic feet to cubic yards.
Details: Proper gravel volume estimation ensures proper drainage, stable foundations, and cost-effective material purchasing.
Tips: Enter the length and width in feet, and depth in inches. All values must be > 0.
Q1: Why divide by 27?
A: There are 27 cubic feet in 1 cubic yard, so we divide by 27 to convert the volume from cubic feet to cubic yards.
Q2: Why enter depth in inches but length/width in feet?
A: Gravel depth is typically measured in inches (e.g., 4 inches for walkways), while area dimensions are usually in feet.
Q3: What's a typical depth for gravel projects?
A: Common depths are 4 inches for walkways, 6-8 inches for driveways, and 12 inches for heavy-use areas.
Q4: How accurate is this calculation?
A: It provides a good estimate, but actual needs may vary based on compaction and site conditions.
Q5: Does this include waste or overage?
A: No, consider adding 5-10% to the calculated volume for project contingencies.