How Much Is a Yard of Concrete?

Whether you're pouring a new driveway, building a patio, or filling in a foundation, one of the first questions you'll ask is: how much is a yard of concrete going to cost me?

It's a simple question with a slightly layered answer. The price depends on where you live, how much you need, and how it's being delivered. But don't worry — we'll break down everything including the math so you know exactly what to expect before you spend a single dollar.

First — What Is a "Yard" of Concrete?

When contractors and suppliers talk about a "yard" of concrete, they mean a cubic yard — not a linear yard or a square yard.

A cubic yard is a three-dimensional measurement:

$\text{ cubic yard}=3\text{ ft}\times 3\text{ ft}\times 3\text{ ft}=27\text{ cubic feet}$

So one yard of concrete fills a space that is 3 feet long, 3 feet wide, and 3 feet deep. That's a pretty big chunk of material — and it weighs roughly 3,900 to 4,050 pounds when wet.

How Much Does a Yard of Concrete Cost?

On average, ready-mix concrete costs between $125 and $200 per cubic yard in the United States. Most homeowners pay around $150 per cubic yard for a standard mix delivered by truck.

Here's a quick price range by project type:

These are material costs only. Labor, finishing, forming, and reinforcement are separate.

The Formula: How to Calculate How Much Concrete You Need

This is where most people get stuck. Let's make it simple.

The Basic Formula

To find the volume of concrete needed in cubic yards:

$V=\frac{L\times W\times D}{27}$​

Where:

• $V$ = Volume in cubic yards
• $L$ = Length in feet
• $W$ = Width in feet
• $D$ = Depth (thickness) in feet
• $27$ = Number of cubic feet in one cubic yard

Converting Inches to Feet for Depth

Concrete thickness is usually measured in inches. You need to convert to feet before using the formula:

$D\text{ (in feet)}=\frac{\text{thickness in inches}}{12}$

So a 4-inch thick slab:

$D=\frac{4}{12}=0.333\text{ ft}$

Real-World Examples With Full Math

Example 1 — Standard Patio (10 ft × 12 ft × 4 inches thick)

Step 1: Convert thickness to feet

$D=\frac{4}{12}=0.333\text{ ft}$

Step 2: Calculate cubic feet

$\text{Cubic feet}=10\times 12\times 0.333=40{\text{ ft}}^3$

Step 3: Convert to cubic yards

$V=\frac{40}{27}=1.48\text{ cubic yards}$

Step 4: Add 10% waste buffer

$V_{\text{total}}=1.48\times 1.10=1.63\text{ cubic yards}$

Estimated cost at $150/yd³:

$\text{Cost}=1.63\times 150=\$244.50$

Example 2 — Driveway (20 ft × 40 ft × 6 inches thick)

Step 1: Convert thickness to feet

$D=\frac{6}{12}=0.5\text{ ft}$

Step 2: Calculate cubic feet

$\text{Cubic feet}=20\times 40\times 0.5=400{\text{ ft}}^3$

Step 3: Convert to cubic yards

$V=\frac{400}{27}=14.81\text{ cubic yards}$

Step 4: Add 10% waste buffer

$V_{\text{total}}=14.81\times 1.10=16.30\text{ cubic yards}$

Estimated cost at $150/yd³:

$\text{Cost}=16.30\times 150=\$2,445$

Example 3 — Concrete Sidewalk (4 ft × 50 ft × 4 inches thick)

Step 1: Convert thickness to feet

$D = \frac{4}{12} = 0.333 \text{ ft}$

Step 2: Calculate cubic feet

$\text{Cubic feet} = 4 \times 50 \times 0.333 = 66.6 \text{ ft}^3$

Step 3: Convert to cubic yards

$V = \frac{66.6}{27} = 2.47 \text{ cubic yards}$

Step 4: Add 10% waste buffer

$V_{\text{total}} = 2.47 \times 1.10 = 2.71 \text{ cubic yards}$

Estimated cost at $150/yd³:

$\text{Cost} = 2.71 \times 150 = \$406.50$

Example 4 — Circular Slab (10 ft diameter × 4 inches thick)

For a circular slab, you use the area of a circle formula first:

$A = \pi r^2$

Where r is the radius (half the diameter):

$r = \frac{10}{2} = 5 \text{ ft}$

$A = 3.14159 \times 5^2 = 3.14159 \times 25 = 78.54 \text{ ft}^2$

Convert thickness to feet:

$D = \frac{4}{12} = 0.333 \text{ ft}$

Calculate cubic feet:

$\text{Cubic feet} = 78.54 \times 0.333 = 26.15 \text{ ft}^3$

Convert to cubic yards:

$V = \frac{26.15}{27} = 0.97 \text{ cubic yards}$

Add 10% waste buffer:

$V_{\text{total}} = 0.97 \times 1.10 = 1.06 \text{ cubic yards}$

Estimated cost at $150/yd³:

Cost=1.06×150=$159 \text{Cost} = 1.06 \times 150 = \$159Cost=1.06×150=$159

Why You Should Always Add 10% Extra

You'll notice every example above adds a 10% waste buffer. This is standard practice in the concrete industry and here's why:

• Concrete spills during pouring
• Ground may be slightly uneven, requiring more fill in some spots
• Forms are never perfectly square
• Better to have a little extra than to run short mid-pour

Vfinal=Vcalculated×1.10V_{\text{final}} = V_{\text{calculated}} \times 1.10Vfinal​=Vcalculated​×1.10

Running out of concrete mid-job is a serious problem. Freshly poured concrete that dries at different times creates cold joints — weak spots where new concrete meets partially dried concrete. Always order a little more than you think you need.

Full Cost Formula Including Labor

If you're hiring a contractor to pour and finish the concrete, the total project cost formula looks like this:

Total Cost=(V×Pmaterial)+(A×Plabor)\text{Total Cost} = (V \times P_{\text{material}}) + (A \times P_{\text{labor}})Total Cost=(V×Pmaterial​)+(A×Plabor​)

Where:

• VV V = Volume in cubic yards
• PmaterialP_{\text{material}} Pmaterial​ = Price per cubic yard of concrete
• AA A = Area in square feet
• PlaborP_{\text{labor}} Plabor​ = Labor cost per square foot

Typical labor costs:

• Basic broom finish: $2 – $3 per sq ft
• Smooth trowel finish: $3 – $5 per sq ft
• Stamped or decorative: $8 – $18 per sq ft

Full Example — 20 × 20 ft Patio Poured and Finished

Material cost:

D=412=0.333 ftD = \frac{4}{12} = 0.333 \text{ ft}D=124​=0.333 ft V=20×20×0.33327=133.227=4.93 yd3V = \frac{20 \times 20 \times 0.333}{27} = \frac{133.2}{27} = 4.93 \text{ yd}^3V=2720×20×0.333​=27133.2​=4.93 yd3 Vtotal=4.93×1.10=5.43 yd3V_{\text{total}} = 4.93 \times 1.10 = 5.43 \text{ yd}^3Vtotal​=4.93×1.10=5.43 yd3 Material cost=5.43×150=$814.50\text{Material cost} = 5.43 \times 150 = \$814.50Material cost=5.43×150=$814.50

Labor cost (broom finish at $2.50/sq ft):

A=20×20=400 ft2A = 20 \times 20 = 400 \text{ ft}^2A=20×20=400 ft2 Labor cost=400×2.50=$1,000\text{Labor cost} = 400 \times 2.50 = \$1,000Labor cost=400×2.50=$1,000

Total project cost:

Total=$814.50+$1,000=$1,814.50\text{Total} = \$814.50 + \$1,000 = \$1,814.50Total=$814.50+$1,000=$1,814.50

Concrete Thickness Guide by Project Type

Not sure how thick your slab needs to be? Here's a standard reference:

Thicker slabs cost more but last longer and handle more weight. Don't cut corners on thickness — it's much cheaper to pour it right the first time than to redo it later.

What Affects the Price of Concrete?

The $125 – $200 per yard range is a national average. Your actual price can land higher or lower depending on several factors:

Location

Concrete prices vary significantly by region. Urban areas and states with higher costs of living tend to charge more. Rural areas may be cheaper but could have delivery surcharges.

Distance From the Batch Plant

Ready-mix concrete trucks have a limited window before the concrete starts to set — usually 90 minutes from the time it's mixed. If your project is far from the nearest batch plant, you may pay a travel fee.

Order Size

Most concrete companies have a minimum order — typically around 1 cubic yard. If you order less than a full truck load (usually 8–10 cubic yards), you'll likely pay a short-load fee of $50 to $200.

Total cost with short-load fee=(V×Pmaterial)+Short-load fee\text{Total cost with short-load fee} = (V \times P_{\text{material}}) + \text{Short-load fee}Total cost with short-load fee=(V×Pmaterial​)+Short-load fee

Concrete Strength (PSI)

Standard residential concrete is 3,000 PSI. Higher strength mixes — 4,000 or 5,000 PSI — cost more but are required for driveways, heavy-load areas, and structural applications.

Additives and Mix Design

• Fiber reinforcement — Adds strength, reduces cracking
• Accelerators — Speed up curing time in cold weather
• Retarders — Slow curing in hot weather
• Air entrainment — Improves freeze-thaw resistance in cold climates

Each additive adds cost — typically $5 to $20 per cubic yard depending on the product.

Bagged Concrete vs. Ready-Mix — Which Should You Use?

For small projects under 0.5 cubic yards, bagged concrete from a hardware store can make sense. For anything larger, ready-mix delivered by truck is almost always more practical.

Bags Needed Formula

If you do go the bagged route, here's how to figure out how many bags you need:

An 80 lb bag of concrete mix yields approximately 0.60 cubic feet.

Bags needed=Total cubic feet0.60\text{Bags needed} = \frac{\text{Total cubic feet}}{0.60}Bags needed=0.60Total cubic feet​

Example: For a 10 ft × 10 ft × 4-inch slab:

Cubic feet=10×10×0.333=33.3 ft3\text{Cubic feet} = 10 \times 10 \times 0.333 = 33.3 \text{ ft}^3Cubic feet=10×10×0.333=33.3 ft3 Bags needed=33.30.60=55.5≈56 bags\text{Bags needed} = \frac{33.3}{0.60} = 55.5 \approx 56 \text{ bags}Bags needed=0.6033.3​=55.5≈56 bags

At roughly $6 to $7 per 80 lb bag, that's $336 to $392 in materials alone — plus you have to mix it all yourself. For anything over a small project, ready-mix is the smarter call.

Quick Reference: Cubic Yards by Common Slab Sizes

Here's a handy table for 4-inch thick slabs at common dimensions:

Note: Add 10% for waste and always get current pricing from your local supplier.

Bottom Line

A yard of concrete costs $125 to $200 on average across the U.S., with most homeowners paying around $150 per cubic yard for standard ready-mix. The formula to calculate how much you need is straightforward:

V=L×W×D27V = \frac{L \times W \times D}{27}V=27L×W×D​

Always add 10% for waste, account for short-load fees on small orders, and get at least two quotes from local suppliers before you commit.

Do the math before you order. A few minutes with a calculator saves you from ordering too little — or paying for a lot more than you actually need.