FREE ONLINE TOOL • UPDATED FOR 2026
Calculate pea gravel for garden paths, patios, play areas, borders, and landscaping in tons and cubic yards.
GUIDE Recommended depths and ordering tips →ENTER YOUR MEASUREMENTS
PEA GRAVEL CALCULATOR GUIDE
This free online pea gravel calculator estimates rounded decorative gravel for paths, patios, borders, play areas, and landscaping.
It converts project dimensions and finished depth into cubic yards and tons of pea gravel, including waste and optional delivery cost. This prevents shortages and makes bulk-versus-bag comparisons easier.
Use the tonnage to request a bulk quote, the cubic-yard result when a landscape yard sells by volume, and the cost estimate for budgeting. For bags, divide the required weight by the weight shown on one bag.
Results are less reliable on slopes, uneven ground, deep fills, structural drainage projects, or when local pea gravel has a different moisture level and density. Confirm large or safety-critical orders with a supplier.
A general gravel calculator supports many aggregate densities. This pea gravel calculator starts with pea gravel density and depth guidance. A French drain calculator also subtracts pipe volume, while a paver calculator estimates compacted base and sand layers.
At 2 inches deep, one ton typically covers around 100 square feet. Density and moisture change actual coverage.
Split it into rectangles or circles and use “Add another area” after each section.
No. Rounded stones shift and do not lock together like angular crushed stone. Use a suitable compacted base where stability matters.
Preparing the base and installing suitable edging normally produces a longer-lasting result.
Pea gravel is made of small, naturally rounded stones. Coverage depends on surface area, finished depth, bulk density, moisture, and how much the stones settle after installation. The pea gravel calculator first finds the volume of the project and then applies a typical pea gravel density to estimate weight. A shallow decorative layer covers more area per ton than a deep path or play area. The selected waste allowance adds a practical margin for minor measurement errors, settlement, spillage, and low spots. Since products from different quarries can vary in stone size and moisture, a local supplier may provide a slightly different tons-per-yard figure.
Pea gravel is popular for garden paths, dog runs, seating areas, landscape borders, fire-pit surrounds, and decorative drainage zones. Its rounded surface can be comfortable to walk on, and the open spaces between stones allow water to pass through. It is not automatically the best material for every base. Rounded stones do not interlock like angular crushed aggregate, so they can shift under wheels, furniture, or concentrated foot traffic. Good edging helps contain the material. For patios or paths that need a firm, stable surface, pea gravel is often installed over a prepared and compacted base rather than directly over soft soil.
Measure the full finished area and divide irregular shapes into smaller rectangles or circles. Depth should describe the installed pea gravel layer only. Two inches is a common starting point for light landscape coverage, while some seating or path applications use two to three inches. Too little material may expose fabric or base after normal movement, while excessive depth can make walking and rolling equipment difficult. Play areas, drainage features, and accessibility-sensitive surfaces may require specific designs or approved products. Those projects should follow local guidance rather than relying on a general depth recommendation.
For larger projects, bulk delivery is usually priced by ton or cubic yard and can be more economical than individual bags. Ask the supplier about minimum loads, delivery access, material color, washed versus unwashed stone, and the density used for conversion. For a small border or repair, bags may be more convenient. Compare the calculator's required total weight with the weight printed on each bag and round up. Color and stone size can vary between batches, so ordering the full project quantity at once may produce a more consistent appearance. Recheck measurements before purchasing because returned bulk aggregate is rarely practical.
Good preparation helps the calculated quantity perform as expected. Remove vegetation and loose organic soil, establish the planned grade, and correct low areas before spreading aggregate. Edging is especially important because rounded pea gravel migrates beyond the finished boundary more readily than angular stone. The edge should retain the selected depth without creating a trip hazard. Where separation fabric is appropriate, overlap and secure it according to product guidance. Fabric does not replace a stable base and should not block intended drainage. Spread material evenly and check depth in several locations instead of relying only on the appearance of the surface.
Pea gravel changes gradually as stones move, settle, and leave the area at entrances. Periodic raking restores an even layer and returns displaced material from edges. Leaves are easier to remove with a light blower setting or a landscape rake that does not pull up the base. Low spots may need a small top-up instead of a complete new order. Keeping the supplier and product details makes future color matching easier. If gravel repeatedly washes away, spreads into adjacent areas, or develops deep ruts, the cause is usually edging, slope, drainage, or base preparation rather than the original quantity estimate.