Building tool
Stair Stringer Calculator
Find riser count, exact rise, total run, stringer length, and stair angle.
Runs in your browserResult
- Risers
- 15
- Exact riser height
- 7.2 in
- Treads
- 14
- Total run
- 140 in
- Stringer length
- 176.82 in
- Stair angle
- 37.6°
Verify maximum rise, minimum tread, headroom, landings, handrails, and stringer rules under local code before cutting.
How to use this stair stringer calculator
- Measure the project, enter the dimensions in the units shown, and add the waste, spacing, coverage, or material settings that apply.
- Review the calculated totals, units, and assumptions. Check the inputs and units before relying on the result.
- Change one input at a time to compare another case, then copy or save the result you plan to use.
About this stair stringer calculator
Use the Stair Stringer Calculator to find riser count, exact rise, total run, stringer length, and stair angle. The result changes when you adjust the values or options above.
You can also use it to compare results after changing one input.
Example
Enter the total rise and desired tread depth to compare riser count, exact rise, run, angle, and stringer length.
Common uses
- → find riser count, exact rise, total run, stringer length, and stair angle
- → compare results after changing one input
- → save an estimate for planning or comparison