For convenience and flexibility, this stair stringer calculator comes in two forms: automatic and manual. Click on the [?] icons to determine the best calculator for your stairs.

This stair calculator computes stair parameters such as rise, total run, angle, and stringer length based on the height, run, tread, and headroom requirements.

Nov 27, 2025 · A simple Stair Stringer Calculator that helps you find the number of steps, riser height, tread run, stair angle, and stringer length using minimal inputs. Includes formulas, and a full example …

Use our online stair calculator to work out stair parameters such as rise, run, angle and stringer length for your next home improvement project.

Tired of making multiple trips to the store? Use our stair and step calculator and get your total stinger length, riser dimensions, and more with Decks.com.

Whether you're building a deck staircase, an interior stairway, or remodeling an old flight of stairs, our Stair Stringer Calculator eliminates costly mistakes and streamlines your workflow. Get started today …

Calculate risers, treads, total run, stair angle, and stringer length instantly with this accurate stair stringer calculator for builders and DIY users.

Use our free Stair Calculator to calculate rise, run, stringer length, angle, tread depth, and total steps. Perfect for framing, decking, and stair design projects.

Calculate the length of a stair stringer.

Calculate stair stringers with precise rise, run, and step dimensions. Building code compliant calculations with cutting instructions and material lists. Free online tool for carpenters and builders.