Plan Your Concrete Project with Confidence
Free concrete calculators, project pages, and practical guides to help you estimate materials, choose the right pour method, and avoid costly mistakes. Built for DIY homeowners and small contractors who want fast, reliable planning help.
Free • No signup • Estimates only
Cubic Yards & Bags
Calculate concrete volume in yards or feet, plus practical bag-count estimates for any size project.
Built-In Waste Factor
Plan with a 5–10% buffer to cover spills, uneven forms, and small measuring differences.
DIY-Friendly
Simple tools, clear explanations, and no unnecessary jargon between you and your estimate.
Instant Results
Get fast planning estimates, then move straight into project pages or guides when you need more context.
Concrete Calculators
Choose the calculator that matches your project type. All tools include waste factors and multiple output formats.
Slab Calculator
Popular
Perfect for patios, driveways, walkways, and garage floors. Enter length, width, and thickness to get cubic yards and bag counts.
Bag Calculator
New
Find out how many 40 lb, 60 lb, or 80 lb bags you need for any volume. Ideal for small projects, repairs, and bagged concrete planning.
Footing Calculator
New
Estimate concrete for isolated footings, deck posts, column bases, and foundation supports. Enter length, width, depth, and footing count to get cubic yards, cubic feet, and bag estimates.
Post Hole Calculator
Coming Soon
Set fence posts, deck supports, and mailbox posts. Calculate volume for round holes with any depth.
Sonotube / Column
Coming Soon
Fill cylindrical forms for columns, piers, and support posts. Enter diameter and height for accurate results.
Ready-Made Project Pages
Prefer a size page or quick conversion instead of starting from scratch? Browse project pages for slab sizes, bag conversions, and footing estimates.
Slab Size Pages
Fast Lookup
Open common slab size pages with instant estimates for cubic yards, cubic feet, and bag counts, then switch to the calculator for custom edits.
Bag Conversion Pages
Quick Lookup
See ready-made bag estimates by volume and compare common 40 lb, 60 lb, and 80 lb bag-count scenarios.
Footing Pages
Size Pages
Browse common footing sizes with planning estimates for cubic feet, cubic yards, and bag counts before moving to the footing calculator.
Popular Guides
Learn best practices, avoid common mistakes, and understand when to use bags vs ready-mix concrete.
How Many Bags of Concrete Do I Need?
Complete guide to estimating bagged concrete for any project size. Includes bag yields, mixing tips, and when to switch to ready-mix delivery.
Concrete Cost Per Yard
Understand pricing for ready-mix concrete, bagged concrete, and labor. Learn how to budget your project and compare delivery options.
How It Works
Choose Your Starting Point
Use a calculator when you want a custom estimate, or open a project page when you want a ready-made size or volume example.
Review Your Estimate
Get cubic yards, cubic feet, bag counts, and a practical waste buffer so you can plan materials more confidently.
Order with Confidence
Use your estimate to buy bagged concrete, request ready-mix pricing, or keep researching with our guides before you pour.
Important: Always verify measurements on-site before ordering. Our calculators and project pages provide planning estimates, not engineering specifications. For structural applications, consult a licensed professional.
Frequently Asked Questions
How accurate are these concrete calculators?
Our calculators use standard industry formulas and include a waste factor to account for spillage and over-excavation. Results are useful for planning and ordering, but final needs can still vary based on site conditions and actual product yield.
What’s the difference between cubic yards and cubic feet?
Cubic yards and cubic feet both measure volume. One cubic yard equals 27 cubic feet. Ready-mix concrete is typically sold by the cubic yard, while bagged concrete is often compared by cubic feet per bag.
Why do I need a waste factor?
Real-world conditions rarely match perfect calculations. Ground may be uneven, forms may shift slightly, and some concrete can spill during mixing and pouring. A five to ten percent waste factor helps prevent shortages.
When should I use bags instead of ready-mix?
Bagged concrete works best for smaller projects, repairs, and places where truck access is difficult. Ready-mix usually makes more sense once volume increases and labor becomes the bigger issue.
Do I need to create an account to use the calculators?
No. All calculators and project pages are free to use with no signup required.
What are project pages?
Project pages are ready-made estimates for common slab sizes, bag-conversion scenarios, and footing dimensions. They help you get a fast answer before opening a calculator for custom adjustments.
Plan Your Pour with Confidence
Whether you’re pouring a patio, setting posts, or preparing footings, our free calculators, project pages, and guides help you estimate the right amount of concrete before you order.
Disclaimer: Concrete Yard Planner provides estimates for planning purposes only. Actual concrete requirements may vary based on site conditions, material characteristics, and other factors. Always verify measurements, consult product labels, and follow manufacturer guidelines. For structural or critical applications, consult a licensed engineer or contractor. We assume no liability for project outcomes.