Calculate Area Please note that the calculators below only represent an approximate measurement. Your project may require different measurements in the end. Square or Rectangle How wide is the area? (Ft.) How long is the area? (Ft.) How thick (deep) do you want to fill? (Inches) What type of material do you want? Mulch (any) Pine Straw Pine Nuggets Compost Soil (any) Sand River Rock Slag 57's Slag 789's Plantation Mix You'll need for your project. Circular What is the diameter? (Ft.) How thick (deep) do you want to fill? (Inches) What type of material do you want? Mulch (any) Pine Straw Pine Nuggets Compost Soil (any) Sand River Rock Slag 57's Slag 789's Plantation Mix You'll need for your project. Triangle (Measure the two sides that meet at the 90° angle) What is length of the first side? (Ft.) What is length of the second side? (Ft.) How thick (deep) do you want to fill? (Inches) What type of material do you want? Mulch (any) Pine Straw Pine Nuggets Compost Soil (any) Sand River Rock Slag 57's Slag 789's Plantation Mix You'll need for your project.