Foundations, slabs & pours
Concrete calculators for volume, footings and bags.
Estimate concrete volume in cubic yards or cubic meters for slabs, footings, columns, and bagged mixes with visible waste allowances.
Start with the shape of the pour, convert every dimension into one unit system, and keep structural design separate from material quantity. Ready-mix and packaged concrete also use different buying boundaries.
Concrete Slab CalculatorEstimate concrete volume and ready-mix requirements for a rectangular slab.Concrete Footing CalculatorPlan continuous footings with clear length, width, and depth measurements.Concrete Column CalculatorEstimate material for round and rectangular structural columns.Concrete Bag CalculatorTurn a project volume into practical 40, 60, or 80 lb bag quantities.Concrete Steps CalculatorEstimate solid concrete step volume from step count, rise, run, and width.Concrete Weight CalculatorEstimate concrete weight from measured volume and an editable mix density.
Before calculating
Three checks for a better estimate.
01Use slab for rectangular pads
Enter finished length, width, and depth when the pour can be treated as a rectangular prism.
02Use footing or column for structure
These tools calculate material volume only. Width, depth, reinforcement, and formwork must come from approved project information.
03Use bags for small placements
Bag count depends on the exact yield printed for the selected mix. Do not infer yield from bag weight alone.