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Cubic Yards Calculator

feet in
feet in
feet in
Use this cubic yards calculator to calculate the amount of dirt, sand, mulch, concrete, topsoil or compost you might need for your project.

Disclaimer: Whilst every effort has been made in building this calculator, we are not to be held liable for any damages or monetary losses arising out of or in connection with the use of it. This tool is here purely as a service to you, please use it at your own risk. Full disclaimer. Do not use calculations for anything where loss of life, money, property, etc could result from inaccurate calculations.

How to calculate cubic yards

To calculate cubic yards we use the formula: Cubic yards = Length (ft) x Width (ft) x Depth (ft) ÷ 27. Measure the length, width and depth of your area and then multiply the figures together to calculate a result in cubic feet. Dividing the result by 27 will give you a total in cubic yards.

Cubic yards = Length (ft) x Width (ft) x Depth (ft) ÷ 27
Diagram of how to calculate cubic yards

Example calculation

In our example above, our width is 6 feet, our length is 12 feet and our depth/height is 6 inches. As there are 12 inches in a foot, we divide our depth figure by 12 to get 0.5 feet. This means our measurements are:

  • Width: 6 feet
  • Length: 12 feet
  • Depth: 0.5 feet

To calculate cubic yards, we multiply 6 × 12 × 0.5 to get a total of 36 cubic feet. We then divide by 27 to get 1.33 cubic yards.

How to convert square feet to cubic yards

To convert square feet to cubic yards, simply multiply your square footage figure by the height/depth in feet. This gives you a result in cubic feet. Divide your result by 27 to get your cubic yards measurement.

If you wish to convert between square feet and cubic yards, you can do so with the square feet to cubic yards calculator.

How many cubic feet are there in a yard?

There are 27 cubic feet in a cubic yard. This means that if you want to convert from cubic feet to cubic yards, you should divide your figure by 27.

We look at this topic in depth in our article, how many cubic feet are in a yard?

Materials measured in cubic yards

Materials commonly measured in cubic yards include:

  • concrete
  • cement
  • sand
  • aggregate
  • rock
  • asphalt
  • gravel
  • dirt
  • compost
  • mulch
  • topsoil

How much will my cubic yard of materials weigh?

If you're looking to find out how much your cubic yard of materials might weigh (in tons, kilograms or pounds), you'll need to do a conversion. The reason we need to do this is because the cubic yard is a unit of volume and the ton, kilogram or pound is a unit of weight. To convert between the two, you'll need to know the density of the substance. To give an extreme example, the total weight of a cubic yard of feathers will be far lighter than a cubic yard of sand.

Should you wish to convert cubic yards to tons, I've built a handy cubic yards to tons calculator which contains density estimates for common materials. It also features an example conversion for a cubic yard of topsoil.


If you have any problems using this cubic yards calculator, please contact me.