Stair Rise and Run Calculator
Free carpentry tool

Stair Rise and Run Calculator

Enter the total rise and see the number of steps, the riser height, the tread depth and the stringer length.

These tools give planning-level estimates from typical values. They are not quotes, designs or engineering, and results depend on your actual materials, framing, access, local rules and conditions. Only a site visit can confirm what a project needs, and we give you a written scope and price before any work begins.

How it works

Four quick steps.

  1. 01

    Measure total rise

    Finished floor to finished floor.

  2. 02

    Pick a target riser height

    About seven inches is common.

  3. 03

    Read the layout

    Number of steps, exact riser and tread depth.

  4. 04

    Check the total run

    Space needed for the stair.

Tips

  • Measure from finished floor to finished floor, including flooring on both levels.
  • Every riser in a flight should be the same height.
  • Building rules set limits on riser height, tread depth and headroom.
Questions

About this tool.

Is this a building-code check?

No. It is a planning guide. Rules vary, and we check the ones that apply to your home.

What is a good riser height?

Around seven inches is common, though the exact limit comes from the rules.

How do I measure total rise?

Measure the vertical distance from the finished floor below to the finished floor above.

Free estimate

Ready to start your carpentry project?

Call us and we will walk the space, talk through ideas and give you a clear plan and a written scope.

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