Calculate Concrete for Any Project in Seconds
Looking for an easy way to figure out how much concrete you need? Our free Concrete Calculator helps you quickly estimate concrete volume, mix proportions, and cost for projects of any size. Whether you’re a contractor, homeowner, or DIY enthusiast, you’ll save time, reduce waste, and get accurate results with just a few clicks.
Concrete Calculator
Project Type
Dimensions
Slabs, Square Footings, or Walls Shape
Add extra volume for waste, spills, and measurement variations
Concrete Strength & Pricing Guide
Concrete prices vary based on strength requirements. Different PSI ratings (3000, 4000, 5000+) come with different costs to reflect material composition and performance characteristics.
Pricing Factors:
- • Concrete strength and mix specifications
- • Delivery distance and transportation fees
- • Minimum order quantities and service charges
For current pricing in your area, contact local suppliers or visit American Concrete Institute.
Enter project parameters and click Calculate
Why Use Our Concrete Calculator?
How It Works?
Using our Concrete Calculator is simple:
Key Features of the Calculator
Concrete Volume Calculator
Input your project dimensions and instantly find out the total concrete volume required.
Concrete Mix Ratio Calculator
Get material breakdown based on standard concrete mixes (e.g., 1:2:4 cement:sand:gravel).
Ready-Mix Cost Estimator
Estimate the total cost of your project by adding your local price per unit.
Concrete Calculator Popular Use Cases
Driveways
Ensure a smooth pour with the right amount of concrete
Patios
Perfect for backyard DIY projects
Concrete Slabs
For floors, basements, and garages
Walls
Calculate vertical concrete needs
Foundations
Estimate footing and base requirements
Frequently Asked Questions (FAQ)
To calculate how much concrete you need, measure the length, width, and thickness (or depth) of your project area. Multiply these dimensions to get the volume in cubic feet or cubic meters. For example, a 10ft × 10ft × 4in slab needs 33.3 cubic feet (1.23 cubic yards) of concrete. Our calculator does this instantly - just enter your dimensions and select your units. It also converts the volume to the number of concrete bags you'll need (60lb or 80lb bags) and provides material breakdown (cement, sand, gravel). For best results, always add 5-10% extra to account for spillage and uneven ground.
Calculating concrete for a slab is straightforward with our slab calculator. First, measure your slab's length and width in feet (or meters), then determine the thickness - typically 4 inches for patios and walkways, 6 inches for driveways and garage floors. The formula is: Volume = Length × Width × Thickness. For example, a 12ft × 14ft patio with 4-inch thickness needs 168 cubic feet or 6.22 cubic yards of concrete (approximately 47 bags of 80lb concrete mix). Our calculator automatically handles unit conversions and tells you exactly how many cubic yards to order or how many bags to buy. You can also use our dedicated Slab Calculator for more detailed results including reinforcement recommendations and finishing material estimates.
Our calculator uses standard concrete density and mix ratios. It's accurate for most projects, but we recommend consulting your supplier for final quantities.
Yes! It's perfect for garden paths, patios, small driveways, or any personal project.
Absolutely. Just enter your local cost per cubic yard (or per bag), and the calculator will estimate your total budget.
The most common ratio is 1:2:4 (cement:sand:gravel). However, ratios may vary depending on strength requirements.
Yes, our calculator supports both systems so you can choose what works best for you.
Start Your Calculation Today
Stop guessing and start planning with confidence. Our Concrete Calculator is free, fast, and easy to use. Whether it's a driveway, slab, or foundation, you'll know exactly how much concrete you need before you begin.
Start Calculating Now