Concrete Calculator
Free concrete calculator — estimate concrete yards, volume, weight, and bags for slabs, driveways, patios, footings, and post holes.
Free Concrete Calculators
Use our concrete calculator to estimate yards of concrete, cubic yards, weight, and number of bags for your project. Works for slabs, driveways, patios, footings, and fence post holes.
Concrete Volume Calculator
Calculate Concrete Needed
Results
Enter dimensions to calculate concrete volume and weight.
Concrete Disposal Calculator
Estimate Concrete Waste
Disposal Estimate
Enter volume to calculate disposal costs and dumpster recommendation.
Concrete Calculator Guide
How to Use the Concrete Calculator
Our concrete calculator (also called a concrete calc or concrete yard calculator) helps you determine how much concrete you need for slabs, driveways, patios, and footings. Simply enter the length, width, and thickness of your project, and the calculator provides:
- Total cubic yards of concrete needed
- Number of 80-lb concrete bags required
- Estimated weight of concrete
- Ready-mix truck loads needed
Concrete Weight Calculations
Standard concrete weighs approximately 4,000 pounds per cubic yard. Our concrete calc accounts for different concrete types:
- Standard concrete: 4,000 lbs per cubic yard
- Lightweight concrete: 3,500 lbs per cubic yard
- Heavy concrete: 4,500+ lbs per cubic yard
Crushed Concrete Calculator
When removing existing concrete, our crushed concrete calculator helps estimate dumpster needs. Crushed concrete is often recycled for:
- Road base material
- Aggregate for new concrete
- Drainage applications
- Landscaping projects
Concrete Post Calculator
For fence and post projects, calculate concrete needs with our concrete post calculator. A typical 4×4 post requires:
- Post hole diameter: 3 times post width
- Post hole depth: 1/3 of above-ground height + 6 inches
- Concrete volume: approximately 1/3 cubic foot per post
Concrete Disposal Options
When removing concrete in Utah, you have several options:
- Dumpster rental: Best for DIY concrete removal projects
- Concrete recycling: Environmentally friendly disposal
- Professional removal: For large commercial projects
Concrete Disposal Tip: Concrete is extremely heavy. Even a small amount can quickly exceed dumpster weight limits. Consider breaking up large sections and disposing in multiple loads.
Dumpster Size for Concrete
Concrete weight requires careful dumpster selection:
- 15-yard dumpster: 2-3 cubic yards of concrete maximum
- 20-yard dumpster: 4-5 cubic yards of concrete maximum
- 30-yard dumpster: 6-7 cubic yards of concrete maximum
Utah Concrete Contractors
Working with concrete contractors in Utah? Many choose Icon Dumpsters for concrete waste removal because:
- Weight-based pricing means fair costs
- Multiple dumpster sizes available
- Same-day delivery across Utah
- Experienced with heavy materials
Ready to rent a dumpster for your concrete project? Call (801) 918-6000 for expert sizing advice and transparent weight-based pricing.
Concrete Calculator FAQ
How do I calculate yards of concrete?
To calculate concrete yards, multiply length × width × thickness (in feet), then divide by 27. Our concrete calculator does this automatically — just enter your dimensions. For example, a 10' × 10' slab that is 4" thick requires about 1.23 cubic yards of concrete.
How many bags of concrete do I need?
One cubic yard of concrete requires approximately 45 bags of 80-lb concrete mix. Enter your project dimensions into our concrete calculator to get an exact bag count.
What is a concrete yard calculator?
A concrete yard calculator (or concrete yardage calculator) calculates the volume of concrete needed in cubic yards. This is the standard unit of measurement for ordering ready-mix concrete. Our calculator for concrete converts your length, width, and thickness into cubic yards instantly.
How do I calculate concrete for fence posts?
Use our concrete post calculator section above. A typical fence post requires a hole 3× the post width and 1/3 of the above-ground post height in depth, plus 6 inches. Each post typically needs about 1/3 cubic foot of concrete, or roughly 1-2 bags of 80-lb concrete mix.
Ready to Get Started?
Get a free quote in minutes. No obligation, no hidden fees.