Concrete Calculators
Professional-grade concrete calculators for any project. Calculate volume, estimate costs, and determine exact material quantities.
Volume Calculators
Calculate exact concrete quantities needed for your project. Get cubic yards, bags, and weight estimates.
Slab Calculator
This calculator finds the concrete volume — cubic yards and cubic feet — for a rectangular slab, pad, or floor.
Cinder Block / CMU Wall Calculator
Estimate blocks, mortar, grout, and rebar for any CMU or cinder block wall.
Column Calculator
A 12-inch round concrete column 8 feet tall takes 6.
Curb Calculator
A standard 6×6-inch residential curb uses 0.
Deck Footing Calculator
A standard 12-inch diameter deck footing at 48 inches deep needs about 6 bags of 80-lb concrete.
Driveway Calculator
A 20×50 ft driveway at 5 inches thick needs 15.
Footing Calculator
A standard 20-foot strip footing (2 feet wide, 12 inches deep) requires 1.
Foundation Calculator
A 30×20 ft slab foundation at 8 inches thick takes 14.
Garage Floor Calculator
A standard 24×24 ft 2-car garage slab at 6 inches thick takes 10.
Patio Calculator
A 16×12 ft patio at 4 inches thick needs about 2.
Pier Footing Calculator
Building pier footings? Calculate concrete needs with our free tool.
Post Hole Calculator
A post hole 10 in wide and 36 in deep holds 1.
Shed Foundation Calculator
A 10×12 ft shed foundation at 4 inches thick requires 1.
Sidewalk Calculator
A concrete sidewalk costs $8–13 per square foot installed — about $32–52 per linear foot at the standard 4-foot width.
Steps Calculator
Four concrete steps 48 inches wide with a 7-inch rise and 12-inch tread take 0.
Walkway Calculator
A 25-ft walkway 3 ft wide and 4 in thick takes 0.
Wall Calculator
Estimate concrete volume, formwork area, footing pour, and rebar for any poured concrete wall.
Weight Calculator
A cubic yard of standard concrete weighs about 4,050 pounds — roughly the weight of a small SUV.
Fence Post Calculator
A standard 4x4 fence post hole (10 in diameter, 36 in deep) needs about 3 bags of 80-lb concrete mix — a typical 10-post fence run needs roughly 30 bags total, about 0.
Gravel Calculator
A slab base is usually 4 inches of compacted gravel, and the calculator works it out as length × width × depth ÷ 27, plus 10% for compaction.
ICF Block Calculator
A 40 ft x 8 ft ICF wall with a 6-inch core needs 60 standard 48x16 in forms and 6.
Rebar Calculator
A 20×20 ft slab with #4 bars at 16 inches on center needs 32 bars on 64 chairs — 624 linear feet of grid, or 687 lf to order with lap allowance: 35 twenty-foot sticks, about 460 lbs, and $515-1,030 in steel.
Sonotube Calculator
A 12-inch Sonotube at 48 inches deep holds 0.
Cost Calculators
Estimate project costs including materials, delivery, and labor. Get pricing breakdowns and budget ranges.
Basement Floor Cost Calculator
Concrete basement floor installation costs $6–11 per square foot.
Slab Cost Calculator
As of 2026, a typical concrete slab costs $6–12 per square foot installed (most projects land $8–10).
Driveway Cost Calculator
A concrete driveway costs $7–13 per square foot installed: about $2,800–$5,200 for a 20×20 ft two-car driveway and $7,000–$13,000 for a 20×50 ft one.
Floor Cost Calculator
A concrete floor costs $6–12 per square foot as a new poured slab with a basic troweled finish and $8–14 per square foot poured and polished.
Garage Floor Cost Calculator
A concrete garage floor costs $6–12 per square foot installed.
Patio Cost Calculator
Concrete patio installation costs $6–12 per square foot for a standard broom finish.
Pool Deck Cost Calculator
A concrete pool deck costs $6–15 per square foot installed: $6–12 for a broom finish and $10–18 for stamped.
Shed Base Cost Calculator
A concrete shed base costs $6–11 per square foot installed — $720–1,320 for a 10×12 shed foundation, or about $250–380 in DIY materials.
Steps Cost Calculator
Poured-in-place concrete steps cost $300–500 per step installed, including forming, pouring, and broom-finished treads.
Stamped Cost Calculator
Stamped concrete costs $8–18 per square foot installed — roughly 1.
Quote & Planning Tools
Understand what a contractor quote should include, what drives each line item, and what red flags to watch for before you sign.
Spec Tools
Preliminary engineering specifications for structural concrete applications — output includes ACI code references.
Finishing Tools
Interactive planning tools for concrete finishing — estimate timing, compare finish costs, and assess DIY feasibility. View all finishing tools →
Concrete Foundation Cost Calculator
A concrete foundation costs $4–7 per square foot of footprint for a monolithic slab, $8–15 for a stem wall, $12–18 for a crawlspace, and $30–60 for a full basement.
Concrete Lifting Cost Calculator
Lifting a sunken slab costs $4–9 per square foot with mudjacking and $8–25 with polyurethane foam, and most contractors charge a $300–700 minimum.
DIY vs Pro Concrete Finishing Tool
Concrete finishing is one of the few construction tasks where mistakes are permanent and expensive.
Concrete Finish Type Cost Estimator
Different concrete finishes vary dramatically in cost — from $6/sq ft for a basic broom finish to $18+/sq ft for premium stamped patterns.
Concrete Finishing Timing Estimator
Timing is the single biggest factor in concrete finishing quality.
Diagnostic Tools
AI-powered tools for identifying and assessing concrete damage.
For contractors
Pricing work rather than pouring it yourself? The bid builder turns a takeoff and your own costs into a proposal, and the DOT bid prices show awarded unit prices by item and district. All of it is on the contractor tools page.
Need Help Choosing?
Not sure which calculator to use? Start with our concrete slab calculator for basic rectangular shapes.
Use Slab Calculator