Calculaxy Construction
Construction Calculators
Simple tools for estimating concrete, material quantities, stair dimensions, and basic beam requirements. Enter the measurements you know and get a result you can actually use.
Choose a calculator
Each tool focuses on one common construction task. The calculator comes first, followed by the formula, an example, and notes that help you understand what the result means.
Concrete Calculator
Estimate how many cubic yards of concrete you need from length, width, depth, and waste allowance.
Open calculator AvailableCubic Footage Calculator
Calculate cubic feet from three dimensions and convert the result to cubic yards when needed.
Open calculator AvailableDeck Stair Calculator
Estimate riser count, actual riser height, treads, total run, and stair angle from your deck height.
Open calculator PreliminaryLVL Beam Span Calculator
Estimate the uniform line load and required section properties for a simple-span LVL beam.
Open calculator AvailableQuikrete Bags Calculator
Estimate the number of concrete mix bags needed for a slab, footing, post hole, or other measured volume.
Open calculatorLooking for another type of calculator?
Move to another category when your project needs a different kind of calculation.