# Stair Calculator

> Plan stair risers and treads from total rise and preferred riser height. Returns the riser count, actual riser height, total run, and an estimated stair angle.

**URL:** https://www.calculatoranswers.com/stair-calculator
**Category:** Home

## Quick Answer

Plan and calculate the dimensions for your staircase. Enter the total rise and target riser height to determine riser count, tread depth, and stringer details.

## Definition

A stair calculator is a construction planning utility used to estimate the dimensions and quantities of materials required to build a set of stairs. It computes the total number of risers and treads, the exact height of each riser, the depth of each tread, and the angle of the stairway stringer based on the total rise height. It ensures calculations comply with standard building codes regarding maximum riser heights and minimum tread depths. Contractors, carpenters, and DIY builders use this tool to design safe, structurally sound staircases.

## How to Use

1. **Enter total rise** — Type the vertical height from the lower landing to the upper floor level.
2. **Set target riser height** — Input the desired height of each individual stair step.
3. **Read staircase dimensions** — Review the calculated riser count, riser height, tread depth, and stringer length.

## Disclaimer

This calculator provides estimates for educational and planning purposes. Always consult a qualified professional for specific advice on financial, medical, legal, or other regulated decisions.

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