Free Tools — No Login Required

All Concrete Calculators

Every free concrete calculator in one place — 47 tools across 7 categories. Calculate volume, bags, cost, driveway, footing, grout, base course, and more. Results are instant, no account needed, and all tools export to CSV or PDF.

47+ calculators7 categories3 languages (EN / ES / FR)$0 cost — always free

Volume & Quantity

Calculate how much concrete you need for any shape or project.

Concrete EstimatorYards, bags, cost, and quote checks in one workflow.Slab CalculatorSquare feet, bags, and material cost.Volume CalculatorCubic yards, bags, and m³.Bag Calculator40, 60, and 80 lb bag counts.Post Hole CalculatorBags per hole for fence and deck posts.Column CalculatorRound columns and cylindrical pours.Footing CalculatorFootings and foundation strips.

Driveways & Outdoor Slabs

Estimate concrete for driveways, patios, sidewalks, and outdoor projects.

Driveway CalculatorYards, bags, and cost for any driveway size.Patio CalculatorConcrete for patio slabs.Sidewalk CalculatorLinear foot and square foot calculations.Garage Slab Calculator20×20, 24×24, and custom sizes.Shed Base Calculator8×10, 10×12, and larger bases.Pad CalculatorAC unit pads, generator pads, small slabs.

Cost Calculators

Estimate total installed cost with material, labor, and delivery.

Concrete Cost CalculatorPer yard, delivery, and short-load fees.Slab Cost Estimator$6–$12/sq ft installed cost breakdown.Concrete Flooring CostNew pour vs finishing existing slab.Cost per Cubic Yard$120–$165/yd³ delivered, by PSI.How Much Is Concrete3, 5, and 10 yards — all-in delivered cost.Delivery Cost CalculatorReady-mix delivery and short-load fees.Delivery Minimum Calculator1–3 yd³ minimum and fee comparison.

Foundations & Footings

Calculate concrete for foundations, piers, and structural footings.

Pier & Caisson CalculatorRound piers and caisson foundations.Foundation Cost CalculatorSlab, crawl space, and basement cost.Frost Line Depth CalculatorFooting depth by US state and frost zone.Pier Blocks for ShedHow many deck blocks for any shed size.

Specialty & Sub-Base

Base course, flex base, and specialty material calculators.

Base Course CalculatorABC, DGA, and road base tonnage.Flex Base CalculatorCrushed limestone for driveways (Texas).Gravel Driveway CalculatorTons and yards for gravel driveways.Gravel Base CalculatorSub-base layer under concrete slabs.CMU Grout CalculatorBags and yards for block wall grout fills.

Fence & Post Hole

Calculate concrete for fence posts, deck posts, and post holes.

Fence Post ConcreteBags per hole, red vs yellow bag guide.Post Hole CalculatorRound post holes — bags and cubic feet.Sonotube CalculatorConcrete for tube form footings.

Bags & Conversion

Convert between units, estimate bag counts, and check material coverage.

Bag Calculator40, 60, and 80 lb bag counts for any volume.Ready-Mix vs BagsBreak-even point calculator.Cubic Yards to TonsConvert between volume and weight units.Weight CalculatorSlab weight in pounds and tons.Pallet Weight Calculator2,800–3,200 lb per pallet guide.

Frequently Asked Questions

Are all these concrete calculators really free?

Yes — every calculator on this page is completely free with no account required. You can calculate, copy results, export to CSV, and print without signing up. The free tier includes all public calculators. Pro accounts add unlimited saved projects and PDF reports.

Which concrete calculator should I use first?

Start with the Concrete Estimator for a full workflow (volume → bags → cost → delivery). For specific jobs: use the Slab Calculator for a driveway or patio, the Bag Calculator if you already know your volume, the Footing Calculator for foundations, or the Post Hole Calculator for fence posts.

Do these calculators work for metric (meters and kilograms)?

Yes — most calculators support both imperial (feet, inches, bags) and metric (meters, kilograms, m³). Toggle the unit system inside each calculator. The Spanish (ES) and French (FR) versions default to metric units.

Can I use these calculators on mobile?

Yes — all calculators are mobile-optimized. The workflow tools work on any screen size, and you can share or copy results directly from your phone.

What is the difference between ready-mix and bags calculators?

The Bag Calculator estimates how many 40/60/80 lb bags to buy at a hardware store. The Concrete Estimator and Cost Calculator handle ready-mix concrete ordered by the cubic yard from a supplier. Use bags for small projects under 1 cubic yard; use ready-mix for anything larger.

Need a calculator for your website? Embed our calculators for free.