Mulch Calculator

Mulch Calculator

Mulch calculator to determine the amount of mulch you need for your landscape. 


After you have determined the best mulch for you the next step is to determine how much mulch you need. (If you haven't you can do so here, Find the best mulch for you) An important factor to consider is how much rain you get in your area. Heavy amounts of rain can wash away mulch, so someone in Hayward, CA would need more mulch then someone living in Livermore, CA.


  • 1. Measure the length and width of the area in feet. Multiply these figures together to find the area in square feet. Do this for all areas where you want to lay mulch and then add the square footage together to get the total square footage of the areas you need to cover.

    2. Determine how deep you want to layer your mulch. In most flowerbeds and vegetable gardens, 2 to 3 inches is a good depth. For heavy weed or grass suppression, put down a 6-inch layer of mulch.

    3. Multiply your total area in feet by how deep you want your mulch in inches. For example, if your square footage is 648 and you want a 2-inch depth, multiply 600 by 4 to get 2400 (600 x 4 = 2400).

    4. Divide your answer by 324 (1 cubic yard of mulch will cover 324 square feet 1 inch deep). Round the result to the nearest whole number to find out how many cubic yards of mulch you need to purchase. In this example, we need to purchase 4 cubic yards of mulch (1296 / 324 = 4).


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Mulch Calculator