Concrete volume and mix calculators. Browse our free concrete tools below — all calculators are instant, accurate, and require no sign-up.
Concrete Bag Calculator — Calculate how many bags of concrete you need. Enter your project volume to get 40-lb, 60-lb, and 80-lb bag counts with cost estimates.
Concrete Column Volume Calculator — Calculate concrete volume for round and square columns. Enter dimensions and column count to get cubic yards for your concrete column project.
Concrete Cost Calculator — Estimate total concrete project cost including material, delivery, and pump fees. Compare ready-mix vs bag pricing for your project.
Concrete Curb & Gutter Calculator — Calculate concrete volume for curb and gutter installations. Enter cross-section dimensions and linear footage to get cubic yards.
Concrete Cure Time Calculator — Estimate concrete strength gain over time with temperature adjustments. See when your concrete reaches target PSI at 3, 7, 14, and 28 days.
Concrete Footing Volume Calculator — Calculate concrete volume for continuous and round pier footings. Enter dimensions to get cubic yards needed for your foundation footing project.
Concrete Mix Ratio Calculator — Calculate cement, sand, and gravel quantities by mix ratio. Enter total volume and ratio to get individual material amounts.
Concrete PSI Selection Calculator — Find the right concrete PSI strength for your project. Match your application to recommended PSI ratings with detailed guidelines.
Concrete Sealer Coverage Calculator — Calculate how many gallons of concrete sealer you need. Enter surface area and sealer type to get coverage and cost estimates.
Concrete Slab Volume Calculator — Calculate concrete volume needed for a slab in cubic yards. Enter length, width, and thickness to get accurate material estimates for your project.
Concrete Steps Calculator — Calculate concrete volume for steps and stairs. Enter step count, rise, run, width, and platform size to get cubic yards needed.
Concrete Wall Volume Calculator — Calculate concrete volume for poured walls with opening deductions. Enter wall dimensions and openings to get cubic yards needed.
Driveway Concrete Calculator — Calculate concrete needed for a driveway. Enter dimensions and thickness to get cubic yards, bags, and cost estimates.
Patio Concrete Slab Calculator — Calculate concrete needed for a patio slab. Enter length, width, thickness, and waste factor to get cubic yards and bags.
Post Hole Concrete Calculator — Calculate concrete needed for fence post holes. Enter hole diameter, depth, post size, and count to get bags or cubic yards required.
Precast Concrete Calculator — Calculate precast concrete piece volume and total weight. Enter dimensions and piece count for project planning, crane capacity, and transport.
Rebar Lap Length Calculator — Calculate required rebar lap splice length by bar size and concrete strength. Includes tension and compression multipliers per ACI 318.
Rebar Spacing Calculator — Calculate the number of rebar bars needed for a slab or wall. Enter span, spacing, and cover to get bar count for both directions.
Shotcrete Volume Calculator — Calculate shotcrete volume for pools, tunnels, and retaining walls. Enter area and thickness with rebound waste factor for yards needed.
Rebar Weight Calculator — Calculate the total weight of rebar by bar size and length. Covers bar sizes #3 through #11 with weight per foot and metric equivalents.
Sidewalk Concrete Calculator — Calculate concrete for a sidewalk. Enter length, width, and thickness to get cubic yards, bag count, and cost estimate.
Sonotube Fill Calculator — Calculate concrete needed to fill Sonotubes. Enter tube diameter, height, and count to get volume in cubic yards or bags.
Stamped Concrete Cost Calculator — Estimate stamped concrete costs per square foot. Enter area, base cost, and stamping premium for total project costs.