Whether you’re planning a landscaping project, filling a garden bed, or leveling ground for construction, knowing how to figure yards of dirt is crucial. Estimating the right amount of dirt helps you save money, time, and effort. In this guide, we’ll walk you through the steps to accurately calculate how many cubic yards of dirt you need.
A cubic yard is a unit of volume that measures 3 feet wide by 3 feet long by 3 feet deep. One cubic yard equals 27 cubic feet. When you buy topsoil, fill dirt, or garden soil in bulk, it’s typically sold by the cubic yard.
Start by measuring the length, width, and depth of the area you need to fill.
Length (L): Measure in feet
Width (W): Measure in feet
Depth (D): Convert inches to feet (e.g., 6 inches = 0.5 feet)
Example: If your flower bed is 10 feet long, 5 feet wide, and 6 inches deep, you’ll use:
L = 10 ft, W = 5 ft, D = 0.5 ft
To determine the cubic feet:
Length × Width × Depth = Cubic Feet
Next, change to cubic yards:
1 cubic yard is equal to 27 cubic feet.
Using our illustration:
25 cubic feet (10 × 5 × 0.5).
0.93 cubic yards is 25 ÷ 27.
Therefore, about one cubic yard of earth will be needed.
Not interested in math? Make use of a dirt yard calculator online. Simply enter the dimensions, and the required number of cubic yards will be immediately calculated. Use keywords such as “soil volume estimator” or “cubic yard calculator for dirt” to find the tools you need.
Round up: Always round up to the nearest whole number to ensure you have enough.
Account for compaction: Dirt settles, especially fill dirt. Add 5–10% extra to compensate.
Know your dirt type: Topsoil, fill dirt, and garden soil all serve different purposes.
How many wheelbarrows are in a cubic yard of dirt?
One cubic yard = 14–15 wheelbarrow loads (standard 2-cubic-foot wheelbarrow)
How much does a yard of dirt weigh?
One cubic yard of dry dirt weighs around 2,000 lbs (1 ton)
Wet dirt can weigh significantly more
How much dirt do I need for raised beds?
Measure the inside dimensions of the bed
Use the same L × W × D ÷ 27 formula to get cubic yards
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