If you’ve ever asked yourself, “How much concrete do I need?”—you’re not alone. Whether it’s a driveway, patio, or footing, figuring out the right amount can be tricky. But as someone who’s been on more jobsites than I can count, I can tell you: with a few key numbers and a bit of planning, you’ll be ready to order with confidence.
The Basics: Calculating How Much Concrete You Need
Concrete is typically measured in cubic yards. One cubic yard equals 27 cubic feet. Here’s the formula to calculate what you need:
Length (ft) x Width (ft) x Depth (in) ÷ 12 ÷ 27 = Cubic Yards
Let’s say you’re pouring a 10×10 patio that’s 4 inches thick:
10 x 10 x 4 ÷ 12 ÷ 27 = 1.23 cubic yards
Pro Tip: It’s better to have a little extra than run out mid-pour.
Step-by-Step: What to Know Before You Order
1. Know Your Dimensions Precisely
Guesstimating leads to over- or under-ordering. Use a tape measure and record your project’s exact length, width, and thickness. Don’t guesstimate. Pull a tape measure, and write down the length, width, and depth of the area you’re pouring.
2. Understand Your Required Thickness
Many homeowners guess wrong here. Use our guide, “How to Know If You Need a 4″, 5″, or 6″ Concrete Pour”, to pick the correct slab thickness.
Here’s a quick breakdown:
- 4″: Sidewalks, patios
- 5″: Driveways
- 6″+: Heavy-duty or commercial surfaces
3. Account for Conditions Like Temperature
While it won’t change the volume, temperature impacts workability and curing. Don’t miss our post: “Does Temperature Really Matter When Pouring Concrete?”
4. Think About Curing Time
Volume isn’t everything—curing is key. For timing and usage guidelines, check out: “How Long Does Your Concrete Driveway Take to Fully Cure?”
Common Concrete Volume Estimates
Here are a few quick reference examples based on average dimensions and 4″ thickness:
| Project Type | Size | Approx. Volume |
| Sidewalk (3’x20′) | 3′ x 20′ x 4″ | ~0.74 cu yd |
| Shed Pad (8’x10′) | 8′ x 10′ x 4″ | ~1.0 cu yd |
| Driveway (12’x40′) | 12′ x 40′ x 5″ | ~7.4 cu yd |
| Garage Floor (20’x20′) | 20′ x 20′ x 6″ | ~7.4 cu yd |
Always check with a contractor or concrete supplier to confirm exact yardage based on your job.
Ordering Tips From the Jobsite
- Pad your numbers. Add 10% to be safe.
- Be ready. Have your tools and team set before the truck arrives.
- Split big jobs. For large pours, consider multiple loads.
- Use admixtures wisely. Hot or cold? Ask about accelerators or retarders.
Need Help Planning Your Pour?
At Burton’s Concrete, we’ve helped homeowners, builders, and businesses all over the region get their concrete jobs done right the first time. If you’re unsure how much concrete you need, or what kind of mix is best for your project, don’t guess—call in the pros.
And remember, successful concrete isn’t just about volume—it’s about timing, temperature, and technique. Pour with confidence by checking out more of our expert guides:
- 👉 Does Temperature Really Matter When Pouring Concrete?
- 👉 How to Know If You Need a 4″, 5″, or 6″ Concrete Pour
- 👉 How Long Does Your Concrete Driveway Take to Fully Cure?
Ready to Find Out Exactly How Much Concrete You’ll Need?
Use our easy-to-follow Concrete Estimate Tool to get a custom estimate for your project in minutes. Skip the guesswork and plan your pour like a pro.
