Landscape Material Calculators

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Measure AREA

Determine the General Shape of the area you need to cover. Is it a circular, square, rectangular or triangular area? If the area is complicated, draw a quick sketch and break the area into portions. Identify 1/2 circles, triangles, squares, and rectangular areas within your working space.

Then measure the areas you need coverage for.

Measure the length and width of rectangles or square areas. (IN FEET)

Measure the radius (from the center to the outside edge of circular areas IN FEET)

Measure the height of a triangle and the base of the triangle. (IN FEET)

Normal depths

Determine EACH material’s total quantity.

For new gardens, use an 8-12″ depth of Garden Mix or Triple Mix, and a 4″ depth for the mulch. Add manure to the soil, and mix in if your new plants require additional composted materials.

To top dress a lawn, apply 2″ of Triple Mix or Top Soil and a PREMIUM seed compacted into the top of the soil, then spread a starter fertilizer over the entire area.

To apply mulch to an established garden, use 3″ of fresh mulch.

Depth you want

Determine how deep you’d like the material to be in it’s FINISHED depth. (IN INCHES) Convert the inches into a fraction of a foot.

2″ = .167 feet

3″=.25 feet

4″=.34 feet

6″=.5 feet

8″=.67 feet

9″=.75 feet

12’=1.0 feet


Use these formula to determine the total CUBIC FEET Required for simple shapes. When you have complicated shapes, add up all portions to arrive at the total cubic feet required. ALL Measurements are in FEET

Square= Length x Width x Depth

Rectangle=Length x Width x Depth

Triangle= 1/2 Base x Height x Depth

Circle= 3.14 x (Radius x Radius) x Depth

1/2 circles: Circle volume divided by 2

Then take your total, and divide it by 27 to arrive at total Cubic Yards.

Add about 10% to the final amount to allow for measurement errors. Round up to the nearest 1/2 cubic yard.