Stair Calculator .
stair stringer calculator
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Professional stair calculator with rise, run, stringer, landing, diagram, and 3D stair previews for builders, contractors, and DIY users.
Build stairs with confidence using Stair Calculator, a professional construction tool designed for carpenters, contractors, deck builders, and DIY renovators.
Whether you need a stair stringer calculator, a stair tread calculator, or a stair rise and run calculator, this app helps you quickly plan accurate stair dimensions from a few simple inputs. Enter the total rise, target riser height, and tread depth to get instant results for step count, exact riser height, total run, stair angle, and stringer length.
Stair Calculator is built for real jobsite use with large controls, clear results, and visual previews that make layout easier to understand.
Core Features:
Stair step calculator for fast stair planning
Stair rise and run calculator with instant dimension updates
Stair stringer calculator for accurate stringer length output
Stair calculator with diagram for quick visual understanding
Elevation, plan, and interactive 3D stair previews
Metric and imperial support
Outdoor-friendly, clean professional interface
Use It For:
Deck stairs calculator projects
Interior stair planning
Stair calculator with landing layouts
Spiral staircase calculator needs
Measuring stairs before cutting or building
Figuring stair stringers on-site
Calculating stringers for stairs during planning and framing
Calculate stringer for steps with faster workflow
General stairs computation for residential projects
Calculated Results:
Number of steps
Number of treads
Exact riser height
Tread depth
Total run
Stair angle
Stringer length
Visual Preview Tools
See your stair in multiple ways:
Elevation preview for straight stairs
Plan preview for landing and turning stairs
Interactive 3D preview for better visualization
Full-screen preview mode for detailed inspection
Pro Features:
Upgrade to unlock advanced workflow tools:
L-shape stairs
U-shape stairs
Spiral stairs
PDF export
Project history
Adjustable tread thickness
Stringer cut diagram
Ad-free experience
Stair Calculator helps simplify measuring stairs, planning layouts, and checking dimensions before you cut. From deck builds to interior renovations, it gives you the fast answers you need in a format that is easy to read and easy to trust.
Privacy Policy: https://asarulabs.com/privacy.html
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
The developer, Asaru Labs LTD, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- ASARU LABS LTD
- Size
- 16.6 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Premium Version $3.99
- Premium Version $19.99
- Premium Version $1.49
- Copyright
- © 2026 Asaru Labs LTD