1. What is a Gravel Calculator by Square Footage?

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

Purpose: It helps determine how many tons of gravel are required for landscaping, driveways, or construction projects.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( T \) — Weight of gravel (tons)
• \( A \) — Area to cover (square feet)
• \( D \) — Depth of gravel layer (feet)
• \( \rho \) — Density of gravel (pounds per cubic foot)

Explanation: The formula calculates volume in cubic feet, converts to weight using density, then converts pounds to tons (2000 lbs = 1 ton).

3. Importance of Gravel Weight Calculation

Details: Accurate weight estimation ensures proper material ordering, cost control, and structural support for your project.

4. Using the Calculator

Tips: Enter the area in square feet, desired depth in feet, and gravel density (default 100 lb/ft³). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical gravel density?
A: Most gravel has a density between 100-130 lb/ft³. The default of 100 lb/ft³ is a conservative estimate.

Q2: How do I convert inches to feet for depth?
A: Divide inches by 12 (e.g., 3 inches = 0.25 feet).

Q3: When would I change the density value?
A: Use higher values (120-130) for denser materials like crushed stone, lower values (90-100) for lighter gravel.

Q4: How do I measure the area?
A: For rectangular areas: length × width. For circular areas: π × radius² (use 3.14 for π).

Q5: Does this include waste or overage?
A: No, consider adding 5-10% to the calculated weight for project contingencies.