How Much Gravel Do I Need?
Estimate gravel volume and tonnage for paths, patios, and drainage projects.
Last reviewed: June 2026
Short Answer
Measure the area and depth. Cubic feet = area x depth in feet. Cubic yards = cubic feet / 27. Tons are estimated by multiplying cubic yards by material density, which varies by supplier and moisture.
Use the gravel calculatorPractical Explanation
Gravel can be sold by cubic yard, ton, or bag. Volume is the starting point; weight depends on material type, density, moisture, and supplier measurement.
DIYers can use this to plan a path or bed. Contractors and landscapers can use it for quick field checks before confirming with the supplier.
Simple Formula
Volume = area x depth. Cubic yards = cubic feet / 27. Tons = cubic yards x tons per cubic yard.
Example: 200 square feet at 4 inches deep
- Convert depth: 4 / 12 = 0.333 ft
- Find cubic feet: 200 x 0.333 = about 66.7 cubic feet
- Convert to yards: 66.7 / 27 = about 2.47 cubic yards
- Estimate tons using 1.4 tons per cubic yard: 2.47 x 1.4 = about 3.46 tons
Plan for about 2.5 cubic yards or 3.5 tons before waste, then verify supplier density.
Common Mistakes
- Using tons without checking supplier density.
- Forgetting compaction for base materials.
- Choosing decorative gravel for a compacted base.
- Skipping fabric or drainage planning where needed.
FAQ
How many tons are in a cubic yard of gravel?
A common estimate is about 1.3 to 1.5 tons per cubic yard, but exact weight depends on material and moisture.
How deep should gravel be?
Decorative areas may use a few inches. Driveways and compacted bases often need more depth depending on traffic, soil, and climate.
Estimate Disclaimer
These guides and calculators provide planning estimates. Bag yields, material density, compaction, waste, site conditions, supplier measurements, and local requirements can vary. Confirm quantities with your supplier, contractor, plans, or local code requirements when needed.
Ready to Estimate Your Project?
Use the calculator to turn your measurements into an approximate material list before you buy, quote, or start work.
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