Http Screen Mirror
GRATUIT
Free
Utilities
Free
StairPlan: Stair Calculator
by ZHENGQIAO JIANG
Description
What does StairPlan do?
Calculates stringer length, riser height, tread depth, and pitch angle for any staircase.
Enter total rise and tread depth, get instant results plus an IRC R311.7 compliance check.
Is my data private?
100% offline. Nothing leaves your iPhone. No accounts, no analytics, no ads, no tracking.
How do I get started?
1. Enter total rise (floor to floor height)
2. Enter desired tread depth (default 10 inches)
3. Read off riser count, riser height, stringer length, and pitch angle
What can I do with it?
- Real-time stair calculations with imperial fractions or metric
- IRC R311.7 compliance warnings (riser height, tread depth, max flight, sum rule)
- Save unlimited stair projects with custom names and notes
- Export scale PDF cut diagrams to print and tape to your wall
- Side view visualization updates as you type
- Reference section with IRC code, formulas, and cutting instructions
What units does it support?
Imperial (feet and inches with fractions to 1/16) and Metric (millimeters and centimeters).
Will the PDF print at actual size?
Yes. PDF output uses 1 inch = 72 points so the cut diagram prints at true scale on letter or A4 paper. Tape it to your stringer board and trace.
Who is this for?
Carpenters, finish carpenters, deck builders, renovation contractors, and DIY homeowners building porch steps, deck stairs, or interior staircases.
How much does it cost?
3-day free trial, then $1.99/week, $4.99/month, $29.99/year, or $79.99 lifetime.
Terms of Use: https://taxlite.net/stair_stringer_calc/terms.html
Privacy Policy: https://taxlite.net/stair_stringer_calc/privacy.html
Calculates stringer length, riser height, tread depth, and pitch angle for any staircase.
Enter total rise and tread depth, get instant results plus an IRC R311.7 compliance check.
Is my data private?
100% offline. Nothing leaves your iPhone. No accounts, no analytics, no ads, no tracking.
How do I get started?
1. Enter total rise (floor to floor height)
2. Enter desired tread depth (default 10 inches)
3. Read off riser count, riser height, stringer length, and pitch angle
What can I do with it?
- Real-time stair calculations with imperial fractions or metric
- IRC R311.7 compliance warnings (riser height, tread depth, max flight, sum rule)
- Save unlimited stair projects with custom names and notes
- Export scale PDF cut diagrams to print and tape to your wall
- Side view visualization updates as you type
- Reference section with IRC code, formulas, and cutting instructions
What units does it support?
Imperial (feet and inches with fractions to 1/16) and Metric (millimeters and centimeters).
Will the PDF print at actual size?
Yes. PDF output uses 1 inch = 72 points so the cut diagram prints at true scale on letter or A4 paper. Tape it to your stringer board and trace.
Who is this for?
Carpenters, finish carpenters, deck builders, renovation contractors, and DIY homeowners building porch steps, deck stairs, or interior staircases.
How much does it cost?
3-day free trial, then $1.99/week, $4.99/month, $29.99/year, or $79.99 lifetime.
Terms of Use: https://taxlite.net/stair_stringer_calc/terms.html
Privacy Policy: https://taxlite.net/stair_stringer_calc/privacy.html
What's new (v1.1.0)
Big V1.1 update — built around how real carpenters work.
NEW STAIR TYPES
- L-shaped, U-shaped, and winder stairs alongside straight
- Per-flight stringer + run breakdown
- IRC R311.7.5.2.1 walkline tread check at 12-inch radius
GLOBAL CODE COMPLIANCE
- Switch between US IRC, Canada NBC (OBC mirror), UK Approved Doc K, and Australia NCC 2022
- Region-specific thresholds for max riser, tread, headroom, pitch, and landing
HEADROOM + FLOOR FINISH COMPENSATION
- Optional ceiling height input flags low headroom
- Top / bottom finish thickness inputs ensure equal risers AFTER flooring
AR MEASURE (LiDAR aware)
- Two-tap distance measurement straight into Total Rise
- LiDAR-equipped iPhones get +/-1 cm accuracy
3D PREVIEW
- SceneKit isometric view alongside the 2D side elevation
- Drag to orbit, pinch to zoom
EXPORTS + MATERIALS
- Per-project Bill of Materials added as PDF page 2 (lumber feet, treads, risers, total cost)
- DXF (CAD) and SVG (vector) export alongside PDF
- 1:N integer scale picker auto-snaps to architect / carpenter scales
PROJECT DETAILS
- Site notes + reference photos via PHPicker (no permission needed)
- Stair-type-aware summary card
POLISH
- Custom fraction precision (1/2 to 1/64)
- Multi-flight landing suggestions when over the regional flight cap
- Animated How-to-Cut walkthrough in Reference
Still 100% offline. No tracking, no accounts, no servers. Camera used only when you tap Measure.
NEW STAIR TYPES
- L-shaped, U-shaped, and winder stairs alongside straight
- Per-flight stringer + run breakdown
- IRC R311.7.5.2.1 walkline tread check at 12-inch radius
GLOBAL CODE COMPLIANCE
- Switch between US IRC, Canada NBC (OBC mirror), UK Approved Doc K, and Australia NCC 2022
- Region-specific thresholds for max riser, tread, headroom, pitch, and landing
HEADROOM + FLOOR FINISH COMPENSATION
- Optional ceiling height input flags low headroom
- Top / bottom finish thickness inputs ensure equal risers AFTER flooring
AR MEASURE (LiDAR aware)
- Two-tap distance measurement straight into Total Rise
- LiDAR-equipped iPhones get +/-1 cm accuracy
3D PREVIEW
- SceneKit isometric view alongside the 2D side elevation
- Drag to orbit, pinch to zoom
EXPORTS + MATERIALS
- Per-project Bill of Materials added as PDF page 2 (lumber feet, treads, risers, total cost)
- DXF (CAD) and SVG (vector) export alongside PDF
- 1:N integer scale picker auto-snaps to architect / carpenter scales
PROJECT DETAILS
- Site notes + reference photos via PHPicker (no permission needed)
- Stair-type-aware summary card
POLISH
- Custom fraction precision (1/2 to 1/64)
- Multi-flight landing suggestions when over the regional flight cap
- Animated How-to-Cut walkthrough in Reference
Still 100% offline. No tracking, no accounts, no servers. Camera used only when you tap Measure.
