How many cubic feet are in a cubic yard?

There are 27 cubic feet in one cubic yard. This is because a yard is 3 feet, and 3 × 3 × 3 = 27.

How do I calculate cubic yards for concrete?

Measure the length, width, and depth of your concrete pour in feet. Multiply these three numbers together to get cubic feet, then divide by 27 to get cubic yards. Add 5-10% for waste.

How many bags of mulch do I need?

First calculate the cubic feet needed, then divide by the bag size. Standard mulch bags are 2 cubic feet. Our calculator includes a bag calculator feature.

Cubic Yard Calculator

Calculate volume for concrete, mulch, gravel, and more.

Quick Presets:

Length

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Width

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Height / Depth

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Material Weight Guide

Typical weights per cubic yard:

Material	Weight (lbs)
Mulch / Bark	400 - 800
Topsoil (Loose)	2,000 - 2,500
Gravel / Stone	2,400 - 2,900
Sand (Dry)	2,600 - 2,900
Concrete	4,000+

Calculation History

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How it Works

Most construction materials like concrete, mulch, and gravel are sold by volume, typically in Cubic Yards. To determine how much you need, you simply measure the dimensions of the area you want to fill.

The Formula

There are 27 cubic feet in one cubic yard. So the formula is simply:

(Length (ft) × Width (ft) × Depth (ft)) ÷ 27 = Cubic Yards

Example: A patio 10ft long, 10ft wide, and 0.5ft (6 inches) deep equates to 50 cubic feet. Divided by 27, that is approximately 1.85 cubic yards.

Pre-bagged Materials

Material Weight Guide

Calculation History

How it Works

The Formula