Concrete Steps Calculator

Pouring a staircase means buying the right amount of concrete, and getting the volume right is what keeps you from wasting material or coming up short. With delivered concrete running roughly $150 to $180 per cubic yard in 2026, the cost of guessing wrong adds up fast. Order even one extra cubic yard for a small set of steps and you've spent an unnecessary $150 to $180 with nothing to show for it.

The volume here is built up step by step. Each tread-and-riser unit is treated as a rectangular prism with an average thickness, and a landing is added on top when your design includes one. For a basic flight the math comes out to (Step Rise * Step Run * Step Width * Number of Steps) + (Landing Length * Landing Width * Landing Thickness), which captures both the stairs themselves and the slab they sit on.

Forms spill, edges slump, and complex shapes never come out exactly as drawn, so pad your figure by an extra 5 to 10% before you place the order. The thickness of the base or landing is the part most people leave out, and skipping it is exactly what leads to ordering too little. One more thing worth checking: keep every measurement in the same unit, either all inches or all feet, since mixing them is the fastest way to throw off the final number.