Cubic Yard Calculator
This cubic yard calculator turns project dimensions into a raw volume, a recommended order volume, and a quick unit-conversion check for concrete, gravel, soil, sand, or mulch. Use it when you want a supplier-ready yardage estimate and need to test waste, compaction, or price assumptions before ordering.
Input Form
Main Result
Geometric volume
24.89 yd^3
Quarter-yard round-up
26.25 yd^3
Secondary Result
View calculation details.
Secondary Result
View calculation details.
Current project math
Length in feet
12 ft
Width in feet
14 ft
Depth in feet
4 ft
Footprint area
168 ft^2
Geometric volume conversions
Cubic yards
24.89 yd^3
Cubic feet
672 ft^3
Cubic meters
19.03 m^3
Cubic inches
1,161,216 in^3
Planning adjustment math
Order yd^3 = base yd^3 x (1 + waste%) / compaction factor
24.89 x (1 + 5 / 100) / 1 = 26.13 yd^3
Formula Explanation
Geometry first
Convert dimensions to feet and calculate base cubic feet
The Cubic Yard Calculator first normalizes the entered units into feet. After that, it applies the correct footprint formula for the selected shape and multiplies by depth to get raw cubic feet. If you already know only the square footage, the same idea becomes area x depth before the page converts to cubic yards.
Unit conversion
Convert cubic feet into cubic yards and other volume units
One cubic yard equals 27 cubic feet, so the page uses cubic feet as the internal geometry step and then converts that result into cubic yards, cubic meters, and cubic inches.
Planning adjustment
Adjust the geometric volume for waste, compaction, and optional price
The headline result on this page is a recommended order quantity, not only the raw geometric volume. Waste and compaction stay editable because they are project assumptions, not universal standards.
Use Scenarios
Material ordering
Estimate one supplier-ready yardage number before you order
Use the cubic yard calculator when a concrete, gravel, soil, sand, or mulch quote needs one supplier-ready yardage estimate instead of rough mental math.
Project planning
Test waste and compaction assumptions before delivery day
The cubic yard calculator helps when the raw shape-based volume is clear, but you still want to pressure-test how settling, overage, or supplier rounding affect the final order.
Unit conversion
Translate feet-based measurements into cubic yards and metric volume
The Cubic Yard Calculator is also useful when project notes are written in feet or inches but the supplier sells in cubic yards and another teammate still wants the result in cubic meters.
Example Cases
Worked example
Case 1: Concrete patio pour
Inputs
12 ft by 14 ft with 4 in depth, concrete preset, 5% waste, no compaction loss.
Computed Results
Recommended order volume 2.18 yd^3; geometric volume 2.07 yd^3; quarter-yard round-up 2.25 yd^3.
Planning note
This is a simple rectangular pour, so the geometry result and the final order quantity stay close together. The practical decision is usually whether to round the order to 2.25 yd^3 or 2.5 yd^3 with your supplier.
Worked example
Case 2: Mulch bed with settling
Inputs
20 ft by 8 ft with 3 in depth, mulch preset, 12% waste, 0.80 compaction factor.
Computed Results
Recommended order volume 2.07 yd^3; geometric volume 1.48 yd^3; quarter-yard round-up 2.25 yd^3.
Planning note
Mulch shows why planning assumptions matter. The raw geometric volume looks modest, but the order number grows once you account for spill and settling after spreading.
Worked example
Case 3: Circular gravel pad
Inputs
10 ft diameter with 4 in depth, gravel preset, 5% waste, 0.90 compaction factor.
Computed Results
Recommended order volume 1.13 yd^3; geometric volume 0.97 yd^3; quarter-yard round-up 1.25 yd^3.
At the entered price, material cost is $58.82.
Planning note
A circular footprint reduces the raw volume versus a same-size square pad. This example also shows how a quoted per-yard price can turn the planning order quantity into a quick material estimate.
Boundary Conditions
Sources & References
- NIST - SI Units: LengthKept to support the exact yard and inch conversion relationships that sit underneath the page's feet-to-meters and inch-to-feet normalization.
- QUIKRETE - Concrete CalculatorUsed as a practical ordering reference for supplier-style material estimation and the common habit of rounding material orders up instead of down.
- Inch Calculator - Cubic Yards CalculatorKept as a supplementary explanatory reference for the shape-based cubic-yard workflow and the common supplier-facing yardage ordering pattern.