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.
Free Concrete Calculators
23 toolsConcrete volume and mix calculators. Browse our free concrete tools below — no sign-up required.
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.
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.
Shotcrete Volume Calculator
Calculate shotcrete volume for pools, tunnels, and retaining walls. Enter area and thickness with rebound waste factor for yards needed.
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.