Step Volume Calculator

Step Volume Calculator — Calculate Concrete for Steps and Stairs

Step Volume Calculator

Calculate concrete volume, materials and cost for steps, stairs and staircases. Estimate concrete needed for your stair construction project.

Step 1: Step Dimensions

Step Rise (Height)

Step Run (Depth)

Step Width

Number of Steps

Standard Step Dimensions

Standard step rise is 7-8 inches (18-20 cm) and run is 10-11 inches (25-28 cm). For comfortable stairs, follow the rule: 2×Rise + Run ≈ 25 inches (63.5 cm).

Step 2: Concrete & Cost

Concrete Thickness

Concrete Price per Cubic Yard

Waste Factor

Include top/bottom landings

Include rebar reinforcement

Include formwork materials

Concrete Estimates

Concrete steps typically require 3000-4000 psi concrete mix. Rebar: 0.5 lb per cubic foot. Formwork: 1 sheet of plywood per 8 steps.

Concrete Volume Estimate

Summary

Materials List

Volume Breakdown

Total Estimated Cost

$425.50

1.25 cubic yards required

Total Concrete Volume

1.25 yd³

Number of Steps

5 steps

Rebar Required

45 lbs

Total Stair Length

55 inches

Complete Materials List

Material	Quantity	Unit Price	Total Cost	Notes

Volume Breakdown by Component

Step Volume Calculation Formula

Step Volume = (Rise × Run × Width × Thickness) × Number of Steps

Calculate volume for one step then multiply by number of steps. Convert to cubic yards: Divide by 46,656 (inches) or 1,307,950 (cm). Add waste factor and landings if included.

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