Stone Yard Calculator
Enter the length, width, and depth of your area, choose the stone material, and add your waste percentage to calculate the cubic yards, cubic feet, cubic meters, estimated weight, coverage area, and optional material cost.
The Stone Yard Calculator calculates how much crushed stone, gravel, pea gravel, river rock, limestone, sand, or other bulk aggregate you need for a project. The calculator determines the required stone volume in cubic yards (yd³) from the area dimensions and depth, then converts the result into cubic feet (ft³), cubic meters (m³), US tons, metric tonnes, and kilograms (kg).
To calculate stone for a rectangular area, measure the length and width of the ground area and measure the depth of the stone layer. Length and width can be entered in feet (ft), inches (in), yards (yd), meters (m), or centimeters (cm), while depth can use the same measurement units. The calculator converts all dimensions to meters before calculating the volume, so mixed measurement units can be used correctly.
For a circular area, measure the diameter across the circle and enter the required stone depth. For a triangular area, enter the base, height, and depth. The calculator uses the appropriate area formula for each shape and then multiplies the area by the stone depth to determine the base volume.
The calculator can include waste, overage, or compaction allowance in the final material quantity. Entering 10% waste increases the calculated material volume by 10%, which helps account for material loss, uneven ground, settling, cutting, spreading, and normal project variation.
Select the stone material to estimate weight using its approximate bulk density. The calculator provides weight in US tons and metric tonnes, with the kilogram equivalent shown for additional reference. Because aggregate density varies according to stone type, particle size, moisture content, compaction, and supplier specifications, the weight is an estimate rather than an exact shipment weight.
You can enter a material price per cubic yard, US ton, metric tonne, cubic meter, or square foot covered to estimate the project cost. The final quantity is intended for estimating bulk stone, landscape rock, decorative stone, driveway gravel, drainage stone, crushed rock, aggregate, and similar loose materials before ordering.
Stone Yard Calculator
Find the cubic yards of stone you need — plus tons & cost.
Fill in the dimensions and press Calculate to see the cubic yards.
How the Stone Yard Calculator Works
The Stone Yard Calculator first determines the surface area from the selected shape, then multiplies the area by the stone depth to calculate volume. The calculator adds the selected waste percentage, converts the final quantity into cubic yards, cubic feet, cubic meters, US tons, metric tonnes, and kilograms, and can estimate material cost from the selected pricing unit.
Measure the Area
Enter the length and width for a rectangle, diameter for a circle, or base and height for a triangle, then enter the required stone depth.
Calculate the Volume
The calculator determines the area, multiplies the area by depth, and increases the material volume by the waste percentage you enter.
Estimate Stone Quantity
The final volume is converted into cubic yards, cubic feet, cubic meters, weight measurements, coverage measurements, and optional estimated cost.
Stone Yard Calculator Formula
The Stone Yard Calculator uses the area and volume formulas for the selected shape. The final stone quantity includes the waste or compaction percentage entered in the calculator.
The calculator converts the entered measurements to meters before calculating volume. The resulting volume is then converted from cubic meters (m³) to cubic yards (yd³) using the exact cubic-yard conversion.
Rectangle Area
Area = Length × Width
Use this formula for driveways, pathways, beds, patios, rectangular landscaping areas, and other four-sided areas.
Circle Area
Area = π × (Diameter ÷ 2)²
The calculator uses the diameter across the circular area and divides the diameter by 2 to obtain the radius.
Triangle Area
Area = ½ × Base × Height
Use the base and perpendicular height of the triangular ground area before applying the required stone depth.
Cubic Yards
yd³ = m³ ÷ 0.764554857984
One cubic yard contains 27 cubic feet, and the calculator converts the calculated volume into cubic yards for ordering bulk stone.
Weight
Weight = Volume × Density
Weight depends on the selected material density and is reported in US tons, metric tonnes, and kilograms.
Estimated Cost
Cost = Quantity × Unit Price
The calculator multiplies the calculated quantity by the price per cubic yard, ton, tonne, cubic meter, or square foot.
Stone Yard Calculator Example
A rectangular landscaping area measuring 20 feet long by 10 feet wide needs 4 inches of crushed stone. The example uses 10% waste and the calculator's approximate crushed-stone density of 100 lb/ft³.
Example: 20 ft × 10 ft Stone Area
Rectangular area · Crushed stone · 4 in depth · 10% waste
Helpful Information Before Calculating Stone
Accurate measurements produce a more useful stone quantity estimate. Check the area dimensions, stone depth, material type, waste allowance, and supplier pricing before ordering bulk aggregate.
Measure the Ground Area
- Measure the full length and width of a rectangular area in feet, inches, yards, meters, or centimeters.
- Measure the diameter across a circular area rather than measuring the circumference.
- Measure the base and perpendicular height of a triangular area.
Measure Stone Depth Correctly
Measure the planned depth of the stone layer from the prepared ground surface to the finished surface. Common aggregate depths vary by project, so use the depth specified for your driveway, walkway, drainage layer, landscape bed, patio base, or other application rather than choosing a depth from the calculator.
Use a Waste Allowance
A waste or compaction allowance accounts for uneven surfaces, settling, spreading losses, material handling, and small measurement differences. The calculator lets you enter a percentage such as 5%, 10%, or another value that matches your project requirements.
Understand Stone Density
Stone weight depends on bulk density. Crushed stone, gravel, pea gravel, river rock, limestone, sand, and topsoil have different approximate densities, while moisture and particle size can change the actual delivered weight. Use supplier-provided density or weight information when exact purchasing quantities are required.
Check Cubic Yard Measurements
- 1 cubic yard (yd³) equals 27 cubic feet (ft³).
- 1 cubic meter (m³) equals approximately 1.30795 cubic yards.
- 1 cubic yard equals approximately 0.764555 cubic meters.
Compare Supplier Pricing
Bulk stone suppliers may quote prices by cubic yard, US ton, metric tonne, cubic meter, or covered square foot. Enter the supplier's price using the matching unit in the calculator so the estimated material cost uses the same quantity basis.
Know the Weight Estimate
The Stone Yard Calculator converts the calculated material volume and selected density into US tons, metric tonnes, and kilograms. The result is an estimate for planning purposes and does not replace a supplier's certified load weight.
Confirm the Final Order
Use the calculator result to estimate the required quantity, then confirm the final order with the stone or aggregate supplier. Supplier products can differ in gradation, moisture, density, delivery requirements, and available load sizes.
Related Calculators
Use these related home improvement and aggregate calculators for other material quantity, coverage, volume, and project estimation needs.
Frequently Asked Questions
Find answers to common questions about calculating cubic yards of stone, aggregate volume, stone weight, material density, waste allowance, and estimated project cost.