Our Stair Calculator helps you plan and design stairs with accurate measurements for rise, run, and stringer length. Whether you are building indoor stairs, deck stairs, or any other type of staircase, this tool provides the calculations you need for a safe and comfortable design.
Most building codes have specific requirements for stairs to ensure safety:
For precise measurements, use this conversion table:
| Fraction | Decimal |
|---|---|
| 1/16 | 0.0625 |
| 1/8 | 0.125 |
| 1/4 | 0.25 |
| 1/2 | 0.5 |
| 3/4 | 0.75 |
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