Concrete Steps Calculator
Estimate concrete volume, bags, and cost for stairs using step measurements.
Volume (cubic feet): 0
Estimated Weight: 0 lbs
Estimated Cost: $0
Total Rise: 0 in
Total Run: 0 in
What Is a Concrete Step Calculator?
A concrete step calculator helps you estimate how much concrete you need to build stairs or steps. By entering simple measurements like step width, rise, run, and number of steps, you can quickly calculate the total concrete volume, required bags, and approximate weight.
This tool is useful for homeowners, contractors, and DIY builders planning concrete stair projects.
How to Estimate Concrete for Steps (Step-by-Step)
Estimating concrete for steps may look complicated at first, but once you break the stairs into simple shapes, it becomes much easier. Concrete steps are calculated by dividing them into smaller rectangular sections instead of treating them as one solid block.
Follow the steps below to understand how concrete estimation for stairs works.
Step 1: Measure the Stair Width
First, measure the width of the steps from one side to the other.
This width is usually the same for all steps and the top platform.
Example: 48 inches wide
Step 2: Measure Rise and Run
Next, measure:
Rise – the vertical height of one step
Run – the horizontal depth of one step
These two measurements define the shape of each stair.
Typical values:
Rise = 7–8 inches
Run = 10–11 inches
Step 3: Count the Number of Steps
Count how many steps are required to reach the total height from ground level to the top landing.
Example: 5 total steps
Step 4: Divide the Steps Into Rectangular Blocks
Each concrete step can be treated as a rectangular block.
The first step has the smallest height
Each next step adds extra height
The top platform is calculated as a separate rectangle
Instead of calculating one complex shape, calculate the volume of each block and add them together.
Step 5: Calculate Volume for Each Step
The volume of each rectangular section is calculated using:
Volume = Width × Run × Height
Each step has a different height, so you calculate the volume of each step separately.
Step 6: Add Platform or Landing Volume (If Any)
If your stairs include a top platform or landing, calculate it separately:
Platform Volume = Platform Depth × Platform Height × Width
Then add this to the total stair volume.
Step 7: Convert Total Volume Into Usable Units
Concrete is usually ordered in cubic yards, so the final volume must be converted:
Cubic inches → cubic feet
Cubic feet → cubic yards
Most builders also estimate:
Concrete weight
60-lb and 80-lb bag quantities
This is where a concrete steps calculator saves time and avoids mistakes.