1. What is the Gravel Calculation Formula?

The gravel calculation formula determines how many tons of gravel are needed to cover a specific area at a certain depth, accounting for the material's density.

2. How Does the Calculator Work?

The calculator uses the following equation:

Where:

• Length — Area length in feet
• Width — Area width in feet
• Depth — Desired gravel depth in inches
• Density — Gravel density in tons per cubic yard (typically 1.35-1.7)
• 12 — Converts inches to feet
• 27 — Converts cubic feet to cubic yards

Explanation: The formula first calculates volume in cubic yards, then multiplies by density to get weight in tons.

3. Importance of Accurate Gravel Calculation

Details: Proper gravel estimation ensures you purchase the right amount - too little leaves your project incomplete, while too much wastes money.

4. Using the Calculator

Tips: Measure your area accurately in feet. Common gravel densities range from 1.35-1.7 tons/cu yd (1.4 is typical for many crushed stones).

5. Frequently Asked Questions (FAQ)

Q1: What's the typical density for different gravel types?
A: Pea gravel ~1.4, crushed stone ~1.5, bank gravel ~1.35, quarry process ~1.6 tons/cu yd.

Q2: How do I measure irregular areas?
A: Break into rectangles, calculate each separately, then sum the totals.

Q3: Should I order extra gravel?
A: It's wise to add 10-15% to account for compaction and spillage.

Q4: How deep should gravel be for different uses?
A: Driveways 4-6", walkways 2-3", decorative areas 1-2", drainage 6-12".

Q5: Can I use this for other materials?
A: Yes, with appropriate density values (sand ~1.2, topsoil ~1.1 tons/cu yd).