Gravel Calculator by Square Footage
Know your project's square footage? Enter it along with your desired depth to instantly calculate how many tons and cubic yards of gravel you need. Perfect for when you already have area measurements.
📊 Square Footage Coverage Visualizer
500 ft²How to Calculate Gravel by Square Footage
If you already know the square footage of your project area — from architectural drawings, landscape plans, or your own measurements — use this guide to calculate gravel quantity in three simple steps.
Know Your Square Footage
Enter the total area in square feet. If you have an irregular shape, break it into rectangles, circles, or triangles and add them together.
Set Your Desired Depth
Choose how deep you want the gravel: 2 inches for light coverage, 3–4 inches for walking paths and patios, and 4–6 inches for driveways and bases.
Apply the Formula
Volume (ft³) = Square Footage × (Depth ÷ 12). Then divide by 27 to convert to cubic yards. Multiply by material density for weight in tons.
Select Your Gravel
Different gravel types have different weights per cubic yard. Select the material closest to what you plan to use for an accurate weight estimate.
Order the Right Amount
Add 10% to your estimate for compaction and waste. For large areas, order by the ton via bulk delivery for the best price.
From Square Footage to Gravel Volume
Once you know the square footage of your project area, calculating gravel volume is straightforward. The formula multiplies your area (ft²) by the depth (in feet) to get cubic feet, which is then converted to cubic yards and tons.
Coverage Rates by Depth
Click any application card below to highlight specific specs and project guidelines.
1–2 Inch Depth
Light decorative coverage for garden beds and borders. One ton of gravel covers approximately 80–160 ft² at this depth.
3 Inch Depth
Standard depth for garden paths, patio areas, and playground fill. One cubic yard covers about 108 ft² at 3 inches.
4 Inch Depth
Minimum recommended depth for residential driveways. One ton of crushed stone covers approximately 50–60 ft² at 4 inches.
6 Inch Depth
Required base depth for concrete slabs, heavy driveways, and drainage applications. One cubic yard covers approximately 54 ft² at 6 inches.
Tips for Accurate Area Measurement
Interactive guidelines to ensure a flawless installation and avoid common planning mistakes.
Measure in Feet
Always measure in feet (not yards or meters) and enter directly. For metric measurements, use the Meters/CM toggle on the calculator.
Break Complex Shapes
For L-shaped or irregular areas, divide into simple rectangles. Calculate each section separately and add the results together.
Circles & Curves
For circular areas, measure the diameter and use our Circle shape option. The formula A = π × r² is handled automatically.
Read Your Plans
If working from architectural or landscape plans, the area is often listed in square feet on the drawing. Use this directly as your input.
Gravel by Square Footage — FAQs
Find answers to common questions regarding calculations, material selection, and installation.
Q1 How many square feet does a ton of gravel cover?
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Coverage depends on depth: At 1 inch deep, 1 ton covers ~160 ft². At 2 inches, it covers ~80 ft². At 3 inches, ~55 ft². At 4 inches, ~40 ft². At 6 inches, ~27 ft². These are estimates for typical gravel densities around 2,700 lbs/ton.
Q2 How many square feet does 1 cubic yard of gravel cover?
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1 cubic yard covers: 324 ft² at 1 inch deep, 162 ft² at 2 inches, 108 ft² at 3 inches, 81 ft² at 4 inches, and 54 ft² at 6 inches deep. A cubic yard equals 27 cubic feet, so the formula is: Coverage (ft²) = 27 ÷ (Depth in feet).
Q3 How do I measure the square footage of an irregular area?
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Break the area into basic shapes: rectangles, triangles, and circles. Calculate the area of each part separately and add them together. For rectangle: A = L × W. For triangle: A = 0.5 × base × height. For circle: A = π × r². Use the L-Shape option in the calculator for areas with one notch cut out.
Q4 How much gravel do I need for 1,000 square feet?
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1,000 ft² at 2 inches deep: 6.2 cubic yards / 8.6 tons. At 3 inches: 9.3 cubic yards / 13 tons. At 4 inches: 12.3 cubic yards / 17.3 tons. At 6 inches: 18.5 cubic yards / 25.9 tons. Use our calculator for exact numbers based on your chosen gravel type.
Q5 How do I convert square feet to cubic yards of gravel?
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Formula: Cubic Yards = (Square Feet × Depth in inches) ÷ 324. Example: 500 ft² at 4 inches = (500 × 4) ÷ 324 = 6.17 cubic yards. To get weight in tons, multiply cubic yards by 1.4 (approximate tons per cubic yard for most gravel types).
Q6 What depth of gravel do I need for different projects?
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Decorative garden beds: 1–2 inches. Walking paths: 2–3 inches. Patios: 3–4 inches. Residential driveways: 4 inches (minimum). Heavy-use driveways: 6 inches. Concrete slab base: 4–6 inches. French drain trenches: fill to within 2 inches of surface.