Measure the pour area
Use finished dimensions for length and width. For irregular areas, split the project into smaller rectangles.
concrete
Concrete Stairs Calculator
Estimate concrete for solid stair pours using width, tread depth, riser height, and step count. Results update instantly as you change the inputs.
Estimated stair concrete1.31 yd³ with 10% waste
- Cubic feet
- 32.08 ft³
- Cubic meters
- 0.91 m³
- 80 lb bags
- 54
- 60 lb bags
- 72
- 40 lb bags
- 107
How to use it
Enter slab thickness
Most patios and walkways use 4 inches. Driveways and load-bearing work may need more.
Order with waste
Use the 10% waste recommendation to cover spillage, uneven subgrade, and small measurement errors.
Related calculators
Concrete Slab Calculator Calculate concrete yards and bags for garage slabs, shed bases, pads, and flatwork. Sidewalk Concrete Calculator Calculate concrete for sidewalks, walkways, and narrow slab pours. Rebar Calculator Estimate rebar sticks for a rectangular reinforcement grid. Concrete Footing Calculator Estimate concrete yards and bags for continuous strip footings. Concrete Wall Calculator Estimate concrete yards for wall pours using length, height, and thickness. Concrete Yards Calculator Calculate cubic yards of concrete from project dimensions. Driveway Concrete Calculator Estimate ready-mix concrete and bag counts for a residential driveway slab. Patio Concrete Calculator Estimate concrete yards and bags for a backyard patio or outdoor pad.
FAQ
Concrete estimating questions
How does the concrete stairs calculator work?
Enter the project dimensions and the calculator converts them into material quantities using common construction estimating formulas.
Should I add waste?
Yes. Most material orders should include a waste allowance for cuts, spillage, uneven base, and field measurement variation.
Are these results final construction advice?
No. Use these estimates for planning, then verify product yield, local code, structural requirements, and supplier recommendations.