DIY

Staircase Calculator

Built by Kevin Glover · @gloverbuilds · Verified formula

Calculate stair rise, run, and number of steps from floor-to-floor height. Code compliant. Free calculator.

📅 Updated April 2026 ✅ Formula verified 📖 4 min read 🆓 Free · No sign-up

In this article

How to Use This Calculator
Tips for Best Results

Dimensiones Correctas

Riser: 7-8". Tread: 10-11". Fórmula de confort: 2×riser + tread = 24-25". El código limita la variación entre risers a 3/8" — incluso pequeñas inconsistencias causan tropezones porque tu pie espera que cada escalón sea idéntico. El ángulo ideal: 30-35 grados.

Calculando Escalones

Número de escalones = altura total ÷ riser deseado. Para 9 pies de altura con risers de 7.5": 108" ÷ 7.5 = 14.4 → usa 14 escalones con risers de 7.71" o 15 con 7.2". Siempre ajusta para que todos los risers sean idénticos.

⚡ CalcWolf Insight

Inconsistent riser heights are the leading cause of stair falls. Building code limits variation to 3/8 inch because even tiny inconsistencies trip people — your foot expects every step to be identical.

Frequently asked questions

¿Cuántos escalones para 9 pies de altura?▾

14-15 escalones dependiendo del riser elegido. Altura (108") ÷ riser (7.5") = 14.4. Usa 14 escalones de 7.71" o 15 de 7.2". La consistencia es más importante que el número exacto.

¿Cuáles son las dimensiones estándar?▾

Riser: 7-8". Tread: 10-11". Ancho: 36" mínimo residencial. Fórmula de confort: 2×riser + tread ≈ 25".

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Kevin Glover · @gloverbuilds

Founder, CalcWolf · GLVTS · Blickr

All formulas sourced from primary references — IRS publications, peer-reviewed research, and official standards. Results are tested against independent reference calculators before publishing. Rates and brackets updated when official sources change. Editorial policy →