Stair Size Calculator 2026
Offline stair step calculator
Only for iPhone
$0.29 · Designed for iPhone. Not verified for macOS.
iPhone
Stair Size Calculator is an offline utility for homeowners, carpenters, renovators, and self-build projects. It helps you quickly plan common stair layouts such as straight stairs and landing stairs.
Enter floor height, available run, tread depth, target riser height, or step count, and the app calculates step count, riser height, tread size, horizontal projection, slope comfort range, and footprint reference. You can save multiple room or project plans for later checking.
Key features:
1. Stair step calculation: calculate riser height, tread depth, horizontal run, and total footprint from floor height, total length, step count, or target riser height.
2. Comfort and risk hints: flag common issues such as high risers, narrow treads, steep slope, or insufficient clearance.
3. Plan templates: save stair plans by room or project, including straight stairs, stairs with landings, and narrow-space layouts.
4. Material and construction reference: estimate tread count, riser board count, handrail length, landing size, and on-site notes.
5. Units and reverse calculation: switch between millimeters, centimeters, and meters, and reverse-calculate floor height or suitable tread depth.
No registration is required. The app works offline, does not connect to the internet, and does not collect personal data. All plans, notes, and calculation records stay on your device, making it practical for job sites, measurement visits, quotation discussions, and construction checks.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Added a feedback feature.
The developer, Nanjing Yunxiaochuang Technology Co., 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 Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Nanjing Yunxiaochuang Technology Co., Ltd
- Size
- 4.5 MB
- Category
- Utilities
- Compatibility
Requires iOS 15.6 or later.
- iPhone
Requires iOS 15.6 or later. - iPod touch
Requires iOS 15.6 or later. - Mac
Requires macOS 12.5 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 8 more
- English, French, German, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish
- Age Rating
4+
- 4+
- Copyright
- © stairStepCalc-dh-2026
