Professional Stair Calculator
Free professional stair calculator for builders and DIY enthusiasts. Calculate steps, rise, run, and ensure building code compliance.
100% Free
No Registration
IRC Compliant
30 Second Results
Trusted by 1000+ users worldwide
3 Steps to Perfect Stair Design
1️⃣
Enter Dimensions
Enter total height and run
2️⃣
Auto Calculate
Get rise and run for each step
3️⃣
Verify Codes
Auto-check building code compliance
Works with Metric & Imperial Units
Use centimeters/meters or inches/feet - whatever works for your project
📏
Metric (CM/M)
Standard worldwide
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Imperial (IN/FT)
US building codes
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Accurate Calculations
Professional calculation engine based on IRC building codes, ensuring accurate and reliable results
Code Validation
Automatically checks compliance with US building codes and provides professional recommendations
Learn about building codes →Unit Conversion
Supports both imperial and metric units to meet different user needs
Stair Building Knowledge Base
Learn about stair design, building codes, and best practices for safe and comfortable stairs
US Building Code Guide
Comprehensive guide to IRC International Residential Code requirements for stairs, including riser height, tread depth, handrails, and other critical dimensions
Read More →Stair Design Fundamentals
Learn how to design comfortable and safe stairs, including optimal riser-to-tread ratios, stair types, and professional design principles
Read More →Stair Measurement Techniques
Master accurate stair measurement methods, avoid common mistakes, and ensure smooth construction process
Read More →Stair Safety Standards
Understand key safety design points including slip resistance, lighting requirements, handrail specifications, and other important safety measures
Read More →Stair Material Selection
Compare pros and cons of different stair materials including wood, concrete, steel, and more to help you make the best choice
Read More →Stair Renovation Guide
Essential tips and practical techniques for renovating old stairs, improving quality of life with refreshed staircases
Read More →Why Choose Our Calculator?
1000+
Happy Users
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Average Session
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“This calculator saved me hours of work. The automatic code validation is incredibly useful!”
— Professional Builder