Coverage Calculator

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1) Measure your area

If you have a complicated shape, don’t worry, give us a call.  We will help you get the right amount for the job.

2) Enter in the measurements

You will need to have your measurements in feet and the depth (height) you want in inches.  The standard for mulch is 3″.

How to do the math:

One (1) cubic yard covers 100 square feet (10′ by 10′) at a 3-inch depth


  1. Convert depth from inches to feet:
    Depth in inches ÷ 12 = Depth
  2. Find cubic footage:
    Depth x Length x Width = Cubic feet
  3. Divide cubic feet by 27 to convert to cubic yards:
    Cubic feet ÷ 27 = Cubic yards
  4. Multiply the cubic yards by 1.5 to get the tons needed for River Rock