Stair Stringer Calculator - 2024 IRC Code-Compliant

🏗 Stair Stringer Calculator — 2024 IRC Code-Compliant

Rise, run, stringer length, material costs, 2024 IRC compliance check + visual cutting diagram

Stair Type

🪜

Standard / Interior

🏠

Deck / Exterior

⬇️

Basement

↪️

L-Shaped

🏗️

Concrete

Measurements

Total Rise (inches) *

Desired Rise Per Step (in)

Tread Depth (inches)

Stair Width (inches)

Tread Thickness (inches)

Nosing Overhang (inches)

Lumber Price / LF ($)

Lumber Type

Results

Steps / Risers

—

steps

Actual Rise

—

inches per step

Total Run

—

inches

Stringer Length

—

inches

Stringer Angle

—

degrees

Stringers Needed

—

stringers

📐 Stringer Cutting Diagram

💰 2026 Material Cost Estimate

* Based on current Home Depot / Lowe's 2026 averages. Actual costs vary by region.

Step-by-Step Measurements

🏡 Need more help with your project?

Use our Deck Calculator for materials, or Concrete Calculator for footings.

Deck Calculator →

Calculator by DIY Calculator