How Many Cubic Feet Make a Yard?

If you are wondering how many cubic feet make a yard, the answer is 27 cubic feet when you are talking about a cubic yard. One cubic yard is a volume measurement equal to a space that is 1 yard long × 1 yard wide × 1 yard high.

Since one yard equals 3 feet, you can calculate a cubic yard by multiplying three dimensions:

3 feet × 3 feet × 3 feet = 27 cubic feet

This conversion is commonly used when buying or estimating quantities of concrete, mulch, soil, dirt, gravel, sand, landscaping materials, and other bulk materials. Understanding the relationship between cubic feet and cubic yards can help you determine how much material you need and avoid ordering too much or too little.

In this guide, you’ll learn exactly how many cubic feet are in a yard, how to convert cubic yards to cubic feet and vice versa, how much area one cubic yard can cover at different depths, and how to calculate your material requirements.

How Many Cubic Feet Make a Yard?

One cubic yard makes 27 cubic feet.

The calculation is:

1 cubic yard = 3 ft × 3 ft × 3 ft

1 cubic yard = 27 cubic feet

Therefore:

1 yd³ = 27 ft³

This is an exact conversion.

Quick Conversion Table

Cubic Yards	Cubic Feet
0.25 yd³	6.75 ft³
0.5 yd³	13.5 ft³
0.75 yd³	20.25 ft³
1 yd³	27 ft³
1.5 yd³	40.5 ft³
2 yd³	54 ft³
3 yd³	81 ft³
4 yd³	108 ft³
5 yd³	135 ft³
10 yd³	270 ft³

So, if a supplier says you need 3 cubic yards, that is equivalent to:

3 × 27 = 81 cubic feet

What Is a Cubic Yard?

A cubic yard is a unit of volume used to measure three-dimensional space.

One cubic yard is a cube measuring:

3 feet long × 3 feet wide × 3 feet high

Because volume is calculated by multiplying length, width, and height:

3 × 3 × 3 = 27 cubic feet

The word “cubic” is important.

A linear yard measures length, while a cubic yard measures volume.

Linear Yard vs. Cubic Yard

A linear yard is simply:

1 yard = 3 feet

A cubic yard is:

1 yard × 1 yard × 1 yard = 27 cubic feet

These measurements should not be confused.

How Many Cubic Feet Are in 1 Yard?

If by “yard” you mean a cubic yard, there are exactly:

27 cubic feet

For example:

1 cubic yard = 27 cubic feet
2 cubic yards = 54 cubic feet
3 cubic yards = 81 cubic feet
4 cubic yards = 108 cubic feet
5 cubic yards = 135 cubic feet

The conversion is always based on the same factor of 27.

Why Are There 27 Cubic Feet in a Cubic Yard?

The answer comes from the fact that:

1 yard = 3 feet

A cubic yard has three dimensions:

Length = 3 feet
Width = 3 feet
Height = 3 feet

Therefore:

3 × 3 × 3 = 27

So:

1 cubic yard = 27 cubic feet

It is not 9 cubic feet because volume involves three dimensions, not two.

How to Convert Cubic Yards to Cubic Feet

To convert cubic yards into cubic feet, multiply the number of cubic yards by 27.

Formula

Cubic feet = Cubic yards × 27

Example 1: 2 Cubic Yards

2 × 27 = 54 cubic feet

Therefore:

2 cubic yards = 54 cubic feet

Example 2: 5 Cubic Yards

5 × 27 = 135 cubic feet

Therefore:

5 cubic yards = 135 cubic feet

Example 3: 10 Cubic Yards

10 × 27 = 270 cubic feet

Therefore:

10 cubic yards = 270 cubic feet

How to Convert Cubic Feet to Cubic Yards

To convert cubic feet into cubic yards, divide the number of cubic feet by 27.

Formula

Cubic yards = Cubic feet ÷ 27

Example 1: 54 Cubic Feet

54 ÷ 27 = 2 cubic yards

Example 2: 81 Cubic Feet

81 ÷ 27 = 3 cubic yards

Example 3: 100 Cubic Feet

100 ÷ 27 ≈ 3.70 cubic yards

Therefore, 100 cubic feet is approximately 3.70 cubic yards.

Cubic Feet to Cubic Yards Conversion Chart

Cubic Feet	Cubic Yards
1 ft³	0.037 yd³
5 ft³	0.185 yd³
10 ft³	0.370 yd³
15 ft³	0.556 yd³
20 ft³	0.741 yd³
27 ft³	1 yd³
40 ft³	1.481 yd³
50 ft³	1.852 yd³
75 ft³	2.778 yd³
100 ft³	3.704 yd³
150 ft³	5.556 yd³
200 ft³	7.407 yd³

How Many Cubic Feet Are in Half a Yard?

Half a cubic yard contains:

0.5 × 27 = 13.5 cubic feet

Therefore:

½ cubic yard = 13.5 cubic feet

This can be useful when calculating smaller quantities of mulch, soil, gravel, or other landscaping materials.

How Many Cubic Feet Are in a Quarter Yard?

A quarter cubic yard is:

0.25 × 27 = 6.75 cubic feet

Therefore:

¼ cubic yard = 6.75 cubic feet

How Many Cubic Feet Are in 2 Yards?

Two cubic yards contain:

2 × 27 = 54 cubic feet

Therefore:

2 cubic yards = 54 cubic feet

How Many Cubic Feet Are in 3 Yards?

Three cubic yards contain:

3 × 27 = 81 cubic feet

Therefore:

3 cubic yards = 81 cubic feet

How Many Cubic Feet Are in 5 Yards?

Five cubic yards contain:

5 × 27 = 135 cubic feet

Therefore:

5 cubic yards = 135 cubic feet

How Many Cubic Feet Does a Yard of Material Cover?

A cubic yard contains 27 cubic feet, but the amount of surface area it covers depends on the depth at which you spread the material.

The deeper you spread the material, the smaller the surface area one cubic yard will cover.

For example, one cubic yard spread at:

1-inch depth covers about 324 sq ft
2-inch depth covers about 162 sq ft
3-inch depth covers about 108 sq ft
4-inch depth covers about 81 sq ft
6-inch depth covers about 54 sq ft
12-inch depth covers about 27 sq ft

Coverage Table for 1 Cubic Yard

Depth	Approximate Coverage
1 inch	324 sq ft
2 inches	162 sq ft
3 inches	108 sq ft
4 inches	81 sq ft
5 inches	64.8 sq ft
6 inches	54 sq ft
8 inches	40.5 sq ft
10 inches	32.4 sq ft
12 inches	27 sq ft

These calculations assume the material is spread evenly.

How Do You Calculate Cubic Yards From Square Feet?

If you know the area in square feet and the desired depth, you can calculate how many cubic yards of material you need.

Use this formula:

Cubic yards = Square feet × Depth in inches ÷ 324

Example: 1,000 Square Feet at 3 Inches

Suppose you need mulch for 1,000 square feet at a depth of 3 inches.

1,000 × 3 ÷ 324 = 9.26 cubic yards

You would need approximately 9.26 cubic yards before accounting for waste or settling.

For practical ordering, you may choose to round up depending on the material and project.

How Do You Calculate Cubic Feet From Length, Width, and Height?

You can calculate cubic feet directly when you know the dimensions.

Formula

Cubic feet = Length × Width × Height

All measurements should be in feet.

Example

Suppose a garden bed is:

20 feet long
10 feet wide
0.25 feet deep

Then:

20 × 10 × 0.25 = 50 cubic feet

Convert to cubic yards:

50 ÷ 27 ≈ 1.85 cubic yards

So the project requires approximately 1.85 cubic yards.

What Materials Are Commonly Measured in Cubic Yards?

Cubic yards are commonly used for bulk materials sold by volume.

Mulch

Landscaping companies commonly sell mulch by the cubic yard.

For example, 3 cubic yards of mulch equals:

3 × 27 = 81 cubic feet

Soil

Topsoil, garden soil, and fill dirt may also be sold by cubic yard.

Gravel

Driveway gravel, decorative stone, and other aggregate materials are often ordered in cubic yards.

Sand

Sand for landscaping, construction, and other projects can be measured in cubic yards.

Concrete

Ready-mix concrete is commonly ordered by cubic yards.

However, concrete calculations can require additional considerations for footings, irregular shapes, reinforcement, and waste.

How Many Bags Equal One Cubic Yard?

The answer depends on the size of each bag.

Since:

1 cubic yard = 27 cubic feet

you can divide 27 by the volume of one bag.

For example, if a bag contains 2 cubic feet:

27 ÷ 2 = 13.5 bags

So it takes 13.5 two-cubic-foot bags to equal one cubic yard.

Since you cannot normally purchase half a bag, you would need 14 full bags to have at least one cubic yard.

Common Bag-Size Comparison

Bag Size	Bags per Cubic Yard
0.5 cu ft	54 bags
1 cu ft	27 bags
1.5 cu ft	18 bags
2 cu ft	13.5 bags
2.5 cu ft	10.8 bags
3 cu ft	9 bags

Actual bag contents can vary, so always check the volume printed on the package.

Cubic Yard vs. Square Yard

These two measurements are often confused.

A square yard measures area.

A cubic yard measures volume.

Square Yard

1 square yard = 9 square feet

It measures:

3 ft × 3 ft = 9 sq ft

Cubic Yard

1 cubic yard = 27 cubic feet

It measures:

3 ft × 3 ft × 3 ft = 27 cu ft

The additional dimension makes cubic yards a volume measurement.

Common Mistakes When Converting Cubic Yards

Mistake 1: Using 9 Instead of 27

Some people calculate:

3 × 3 = 9

and assume a cubic yard equals 9 cubic feet.

That calculation only describes a square yard.

For a cubic yard, you need three dimensions:

3 × 3 × 3 = 27 cubic feet

Mistake 2: Confusing Cubic Feet With Square Feet

Square feet measure area, while cubic feet measure volume.

You cannot directly compare them without knowing a depth or height.

Mistake 3: Forgetting to Convert Inches to Feet

If your dimensions are given in inches, convert them to feet before calculating cubic feet.

For example:

6 inches = 0.5 feet

Mistake 4: Forgetting Material Settling and Waste

Bulk materials may settle after installation. Some projects may also require additional material because of uneven surfaces, spillage, or waste.

Consider your project’s requirements before placing an order.

FAQs

How many cubic feet make a yard?

One cubic yard equals 27 cubic feet. The calculation is 3 feet × 3 feet × 3 feet = 27 cubic feet.

Is a yard 27 cubic feet?

A cubic yard is 27 cubic feet. A regular yard is a linear measurement equal to 3 feet.

How many cubic feet are in half a yard?

Half a cubic yard equals 13.5 cubic feet.

How many cubic feet are in a quarter yard?

A quarter cubic yard equals 6.75 cubic feet.

How many cubic feet are in 2 yards?

Two cubic yards equal 54 cubic feet.

How many cubic feet are in 3 yards?

Three cubic yards equal 81 cubic feet.

How many cubic feet are in 5 yards?

Five cubic yards equal 135 cubic feet.

How do I convert cubic yards to cubic feet?

Multiply the number of cubic yards by 27.

Cubic feet = Cubic yards × 27

How do I convert cubic feet to cubic yards?

Divide the number of cubic feet by 27.

Cubic yards = Cubic feet ÷ 27

How many cubic feet are in a yard of mulch?

One cubic yard of mulch contains 27 cubic feet. The amount of area it covers depends on how deep the mulch is spread.

How many cubic feet are in a yard of dirt?

One cubic yard of dirt contains 27 cubic feet. The actual weight depends on the type and moisture content of the dirt.

How many cubic feet are in a yard of concrete?

One cubic yard of concrete contains 27 cubic feet. Ready-mix concrete is commonly sold by the cubic yard.