Concrete Stairs & Coating Calculators
What happens to concrete after the pour: formed steps priced by riser, and coatings priced by coverage rate rather than volume.
There are 2 calculators here: Concrete Stairs & Steps Calculator (concrete volume, step layout and cost for poured stairs) and Garage Floor Epoxy Coverage & Cost Calculator (epoxy kits, primer, etch and cost for a garage floor).
They all work the same way: quantity first, then a waste allowance you can change, then a price built from verified figures and adjusted for your state. Cost is always a range rather than a single number, and every assumption behind it is printed on the page with its source and the date it was last checked.