Concrete Calculator
Calculate the exact amount of concrete needed for your project.
Inputs
Total Volume
0.00 cu yd
Bags Needed
0
Estimated Cost
$0.00
How to Use This Concrete Calculator
Our free concrete calculator helps you determine exactly how much concrete you need for your project. Whether you're pouring a patio slab, footings, driveway, or foundation, enter your dimensions to get an accurate volume estimate in cubic yards, cubic feet, and bags.
Getting the right amount of concrete is critical — ordering too little causes delays while ordering too much wastes money. Our calculator accounts for your project shape and adds a recommended 5-10% waste factor.
The calculator also estimates concrete cost based on current average prices. Ready-mix concrete typically costs $125-$150 per cubic yard, while bagged concrete costs $4-$8 per 60-lb bag.
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Frequently Asked Questions about Concrete Calculations
How do I calculate how much concrete I need?
Measure length x width x depth in feet, divide by 27 for cubic yards. A 10x10 slab 4 inches thick needs 1.23 cubic yards.
What is the cost per cubic yard of concrete?
Ready-mix concrete costs $125-$150 per cubic yard. Bagged concrete costs $4-$8 per 60-lb bag.
How thick should a concrete slab be?
4 inches for patios, 6 inches for driveways, 8-12 inches for foundations.
How much does a 10x10 concrete slab cost?
About $150-$180 for concrete alone. Add $200-$400 for DIY or $800-$1,500 total with a contractor.
Do I need rebar for a concrete slab?
Recommended for most slabs to control cracking. Slabs over 200 sq ft or driveways should use rebar or wire mesh.
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