Cubic Yard Calculator
Use this cubic yard calculator to convert project dimensions into cubic feet and cubic yards. It is useful for soil, gravel, mulch, sand, concrete and other bulk materials that are commonly sold by volume.
Enter project details
Planning estimate only. Confirm local prices, supplier specifications and site conditions before ordering.
Your estimate
Cubic yards are a volume measure. Material weight and compaction are separate assumptions, so use the dedicated material calculator when you also need tons or bags.
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How the cubic yard calculator works
Cubic feet = length × width × depth in feet. Cubic yards = cubic feet ÷ 27. The optional allowance is applied before the final yardage is shown.
For a better estimate
- Use average depth when the project is not perfectly level.
- Separate irregular shapes into rectangles and combine the volumes.
- Round the final order to the supplier’s actual selling increment rather than ordering an impossible decimal quantity.
Tools that can help with this project
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Frequently asked questions
How do I calculate cubic yards?+
Multiply length by width by depth in feet to get cubic feet, then divide by 27.
How many cubic feet are in one cubic yard?+
One cubic yard contains exactly 27 cubic feet.
Can I use a cubic yard calculator for gravel or mulch?+
Yes. The volume calculation is the same; only weight, compaction and ordering assumptions vary by material.