Cubic Yard Calculator

Use our free Cubic Yard Calculator to instantly convert length, width, and height into cubic yards for concrete, soil, gravel, mulch, and more.

842.1K usesUpdated · 2026-04-26Runs locally · zero upload

How to Use Cubic Yard Calculator

The Cubic Yard Calculator makes it easy to estimate the volume of any rectangular space in cubic yards — the standard unit used when ordering bulk construction and landscaping materials.

  1. Select your unit — Choose feet, inches, yards, meters, or centimeters from the unit dropdown. The Cubic Yard Calculator converts everything automatically.
  2. Enter the dimensions — Type the length, width, and height (or depth) of the space you need to fill.
  3. Read the result — The Cubic Yard Calculator instantly displays the volume in cubic yards, cubic feet, and cubic meters.

For a concrete slab that is 12 ft × 10 ft × 4 in deep, the Cubic Yard Calculator returns approximately 1.48 yd³ — enough to order from a ready-mix supplier.

Formula & Theory — Cubic Yard Calculator

The Cubic Yard Calculator converts all input dimensions to yards and then multiplies them:

Cubic Yards = Length (yd) × Width (yd) × Height (yd)

Common unit conversions applied by the Cubic Yard Calculator:

Input Unit Conversion Factor to Yards
Feet (ft) ÷ 3
Inches (in) ÷ 36
Yards (yd) × 1
Meters (m) × 1.09361
Centimeters (cm) × 0.010936

Equivalent shortcut formulas often cited for the Cubic Yard Calculator:

  • Feet: Cubic yards = (L ft × W ft × H ft) ÷ 27
  • Inches: Cubic yards = (L in × W in × H in) ÷ 46,656

The Cubic Yard Calculator uses these exact conversions under the hood, so you never need to do the arithmetic manually.

Rounding and Ordering

Always round up when purchasing materials. Most suppliers sell concrete and topsoil by the cubic yard, and having a slight surplus is far cheaper than making a second delivery. The Cubic Yard Calculator shows four decimal places so you can decide how much to round up.

Use Cases for Cubic Yard Calculator

The Cubic Yard Calculator is essential for planning any project that involves bulk material:

  • Concrete slabs and footings — Enter slab dimensions to get the exact cubic yard volume to order from a ready-mix plant.
  • Topsoil and fill dirt — Use the Cubic Yard Calculator to determine how many yards of soil are needed to fill a raised bed, backyard low spot, or foundation excavation.
  • Gravel and crushed stone driveways — Calculate the volume of a driveway or path to order the right amount of gravel in cubic yards.
  • Mulch and compost — Garden beds, playgrounds, and tree rings all benefit from the Cubic Yard Calculator when estimating how much organic material to purchase.
  • Swimming pool or pond excavation — The Cubic Yard Calculator helps estimate how much earth needs to be removed, which affects hauling costs.
  • Sand for paver bases — Before laying pavers, use the Cubic Yard Calculator to order the correct volume of sand or compactable base material.

Whether you are a homeowner tackling a weekend project or a contractor pricing a large job, the Cubic Yard Calculator saves time and prevents costly over- or under-ordering.

Frequently asked questions about Cubic Yard Calculator

How do I convert cubic feet to cubic yards?

Divide the number of cubic feet by 27. For example, 54 cubic feet ÷ 27 = 2 cubic yards. Our Cubic Yard Calculator does this automatically when you select feet as the input unit.

How many cubic yards of concrete do I need for a slab?

Enter the slab length, width, and thickness into the Cubic Yard Calculator with feet as the unit. The result is the volume in cubic yards — a standard unit used when ordering ready-mix concrete.

Can I use the Cubic Yard Calculator for mulch or gravel?

Yes. The Cubic Yard Calculator works for any bulk material — mulch, topsoil, gravel, sand, or fill dirt. Enter the dimensions of the area to be filled and the result is the volume in cubic yards.

What units does the Cubic Yard Calculator support?

The calculator supports feet, inches, yards, meters, and centimeters. All inputs are automatically converted to cubic yards.

Is my data stored?

No. All calculations happen in your browser; nothing is sent to a server.