Concrete & Masonry Calculators
Concrete volume, bag counts and pavers for slabs, footings and patios.
7 free tools — instant results, no sign-up.
Available calculators
Concrete CalculatorCubic yards of concrete for slabs, footings and posts.Concrete Bag CalculatorHow many bags of concrete mix your project needs.Paver CalculatorPavers for patios, walkways and driveways.Concrete Slab CalculatorCubic yards and bags of concrete for any slab.Concrete Driveway CalculatorCubic yards of concrete for a driveway pour.Concrete Footing CalculatorCubic yards of concrete for trench footings.Post Hole Concrete CalculatorBags of concrete for fence and deck post holes.
Popular project use cases
- Pouring a patio, shed pad or sidewalk slab
- Estimating bags for small repairs and post holes
- Figuring ready-mix for a driveway or footing pour
- Counting pavers for a patio, walkway or driveway
Choosing the right calculator
- Use the Concrete Calculator or Concrete Slab Calculator for cubic yards of ready-mix.
- Under about a yard, switch to the Concrete Bag Calculator for an exact bag count.
- For a driveway, the Concrete Driveway Calculator defaults to the thicker 5–6 in slab.
- Setting posts? The Post Hole Concrete Calculator sizes bags per hole automatically.
Good to know
Bags vs ready-mix: about 45 eighty-pound bags make one cubic yard. Past a yard, delivered ready-mix is usually cheaper and far less labor.
Concrete & Masonry FAQs
How many bags of concrete equal a cubic yard?
About 45 eighty-pound bags (or 60 sixty-pound bags) make one cubic yard. For pours over a yard, ready-mix delivery is usually the better choice.
How thick should concrete be?
4 in for patios, walkways and shed pads; 5–6 in for driveways; at least 8 in for footings. Structural slabs should follow an engineer’s spec.
Other categories
LandscapingMulch, gravel, topsoil and sod for yards, beds and lawns.Interior ProjectsPaint, drywall, flooring and tile for indoor rooms and surfaces.Roofing & ExteriorShingle bundles and squares for roof replacements.Outdoor ProjectsFence and deck board material lists for outdoor builds.MeasurementsSquare footage and area conversions — the starting point for every estimate.