How do I calculate how much mulch I need?

How do I calculate how much mulch I need?

Keep in mind that mulch is sold by the cubic yard. One cubic yard of the material covers a 324-square-foot area an inch deep. So, to determine your total, multiply your square footage by the depth in inches desired, then divide by 324. Here’s your formula: Square footage x desired depth / 324 = cubic yards needed.

How many bags of mulch do I need for a 100 square feet?

Using 2 cubic foot bags:

DEPTH Area Covered: 8’x8′ (64 sq. ft.) Area Covered: 25’x4′ (100 sq. ft.)
2″ = 12 sq. ft. 5.3 bags needed 8.3 bags needed
3″ = 8 sq. ft. 8 bags needed 12.5 bags needed
4″ = 6 sq. ft. 10.6 bags needed 16.6 bags needed

How much coverage is in a bag of mulch?


Mulch At 2 Inches Deep
2 cf Bags Square Feet Covered
1 Bag 12 Sq. Feet
5 Bags 60 Sq. Feet
10 Bags 120 Sq. Feet

How many square feet will 10 yards of mulch?

A cubic yard of material can be spread to cover 100 square feet (10×10 foot area) at 3 inches of depth. It’s a very helpful ratio because when spreading mulch, a depth of 3 inches is considered ideal.

How do you calculate the amount of mulch?

To calculate how much mulch you will need measure each area’s length and width. Then multiply length times width of each area and add all the answers together. Then divide the answer by 120 to tell you how many yards you will need. You may also want to put a fabric over the soil before you install…

How do you measure for mulch?

Measure the area you want to cover in mulch in feet. Use a measuring tape for irregular areas or curved lines, or a yardstick if straight lines will work for you. Take measurements at the longest and widest parts for irregular areas. Multiply the length times width to get the total area in square feet.

How much mulch is needed?

The best guide to use when determining how much mulch to apply is to start by sticking your finger in the ground. The goal with mulch is to maintain a 1-inch to 1.5-inch layer of mulch once everything settles down. Any deeper and your mulch layer can greatly reduce gas exchange to the root zone and impact plant health and vigor.

How do you calculate cubic yards of mulch?

One cubic yard of mulch is enough to cover about 324 square feet to a depth of 1 inch. Since you multiplied the area by the depth and divided by 324, you are able to calculate the number of cubic yards needed. For example, 3,000 divided by 324 equals 9.26 cubic yards of mulch.