🧱 Concrete & Masonry Calculators
📝 JusTheTool Editorial | 🔄 Last reviewed: July 21, 2026 | 14 tools
Concrete is unforgiving of estimating errors in a way most materials are not. A short order on a pour day means a cold joint you cannot undo, and over-ordering ready-mix means paying for concrete you watch go off in the truck. These calculators cover both directions — bags versus ready-mix, footings, block, brick, and the reinforcing that goes inside.
Everything here works in cubic yards or bag counts, applies a waste factor you can edit, and shows the crossover point where ready-mix becomes cheaper than bags.
Most used in this category
All concrete and masonry tools
- Concrete Bag & Yard Calculator
Calculate exactly how many bags of concrete or cubic yards you need. Supports Quikrete, Sakrete, 60lb and 80lb bags for slabs, footings, and sonotubes. - Concrete Cost & Yardage Calculator
Free concrete cost & yardage calculator. Instantly find cubic yards needed for any slab, footing, or pad, plus ready-mix and installed cost estimates. - Concrete Footing & Sonotube Calculator
Calculate how many bags of concrete for round footings, sonotubes, fence posts, and deck piers. Includes concrete volume by cylinder diameter and depth. - Brick Calculator
Calculate exactly how many bricks you need for a wall, plus bags of mortar and sand. Supports modular, standard, queen, and king brick sizes with a waste f - Paver & Patio Calculator
Calculate exactly how many pavers, how much paver sand, and how much gravel base you need. Includes paver patterns, spacing, and waste factor. - Retaining Wall Block Calculator
Calculate exactly how many retaining wall blocks, cap blocks, and tons of backfill gravel you need — with base trench volume and total cost estimate. - How Many Bags of Concrete in a Yard?
A cubic yard of concrete takes about 45 bags of 80 lb, 60 bags of 60 lb, or 90 bags of 40 lb mix. Full conversion table plus when ready-mix is cheaper. - How Much Concrete Do I Need?
Learn exactly how much concrete you need for any slab, footing, or post hole. Measure, convert to bags or cubic yards, and avoid running short. - How Much Does a Yard of Concrete Weigh?
A cubic yard of concrete weighs about 4,050 lbs (2 tons). See weights wet vs cured, per cubic foot, per square foot by thickness, and for demolition debris - How Thick Should a Concrete Slab Be?
Concrete slab thickness by project: sidewalks, patios, sheds, garages, and driveways. Plus rebar, mesh, subbase, and how thickness affects volume. - How Many Pavers Do I Need?
Work out exactly how many pavers you need for any patio, path, or driveway — with pavers-per-square-foot charts for every common size and pattern waste fac - How to Pour a Concrete Slab Like a Pro (Step-by-Step Guide)
Step-by-step concrete slab pouring guide with bags-vs-ready-mix cost comparison, frost depth chart by region, and printable pour-day checklist.
Before you order
- Measure twice, at the building. Plans and reality diverge. A wall drawn at 30 ft is often 30 ft 1 in once framed.
- Add a waste factor. Every calculator here exposes one. The defaults are industry-standard ranges, not guarantees — complex layouts need more.
- Confirm code locally. We cite the model IRC where a limit applies. Your jurisdiction amends it, and your building department has the final word.
- These are estimates, not quotes. Useful for budgeting and comparing options; not a substitute for a supplier quote or a licensed professional.
How we derive every figure is set out on our methodology page, including the code sections and manufacturer specs behind each constant.
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