Cubic Yard Calculator — Dirt, Gravel, Mulch, Stone

Free cubic yard calculator for dirt, gravel, mulch, stone, and concrete. Calculate how many yards of material you need for your landscaping project.

Calculate Cubic Yards

How to Use

Select the shape of your area — rectangle, circle, or triangle.

Enter the dimensions, depth, material type, and optional price per cubic yard.

Click Calculate to get cubic yards, weight in tons, bag count (for concrete), and cost.

What is a Cubic Yard Calculator?

A cubic yard calculator helps you determine how much material you need for landscaping, construction, and home improvement projects. It converts your area dimensions and depth into cubic yards — the standard unit used to order bulk materials like concrete, mulch, gravel, topsoil, and sand. It also estimates weight and cost, and for concrete projects, shows how many pre-mixed bags you need.

Frequently Asked Questions

How do I calculate cubic yards?
Multiply length × width × depth (all in feet), then divide by 27. One cubic yard equals 27 cubic feet.
What is a cubic yard?
A cubic yard is a unit of volume equal to 3 feet × 3 feet × 3 feet (27 cubic feet). It is the standard ordering unit for bulk materials like concrete, mulch, gravel, and soil.
How many bags of concrete make a cubic yard?
Approximately 45 bags of 80 lb concrete mix, or 60 bags of 60 lb mix, make one cubic yard.
What shapes are supported?
Rectangle/square, circle (cylinder), and triangle. Select the shape tab that matches your project area.
How much does a cubic yard weigh?
It depends on the material. Concrete weighs about 4,050 lbs/yd³, topsoil about 2,200 lbs/yd³, mulch about 800 lbs/yd³, and gravel about 2,700 lbs/yd³.

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