The #1 Free Estimation Tool
Concrete Stairs Calculator
Complex volume calculation for steps and landings.
Enter DimensionsSTAIRS
Interactive Guide
ft
in
0.00
Cubic Yards
80lb Bags0
Recommended Tools
- Plywood (Risers/Stringers)
- Strong Bracing Lumber
- Stair Edging Tool
- Concrete Vibrator
- Float & Trowel
Before You Start
Check Codes
Rise/Run rules.
Stair codes are strict (usually 7.75" max rise, 10" min run). If your steps are uneven sizes, it's a major trip hazard and code violation.
code
During the Pour
Low Slump Mix
Dry mix.
Order concrete at a '3 or 4 inch slump' (stiff). If it's too wet (soup), it will flow out from under the bottom step form when you pour the top steps.
mix
After the Pour
Face Forms
Strip early to finish.
You have to remove the front riser boards while the concrete is still a bit soft so you can trowel the face of the steps smooth. This is a timing art form.
finishing
Why Professionals Use This Tool
Built for speed and compliance with industry estimation standards.
ACI Standard Math
Formulas aligned with American Concrete Institute guidelines.
Automatic Buffer
10% safety margin included for subgrade variation.
Mobile Optimized
Fast loading and responsive for job site usage.
Need Professional Help?
Instant Concrete Calculator helps you plan, but large projects often need a pro.