Enter your total rise (floor-to-floor height), available run space, and desired tread depth. The calculator computes riser count/height, total run, stringer length, and stair angle.

It does not enforce building codes; use code-compliant inputs for your region to stay within requirements.

Includes two visuals: a stair diagram and a stringer layout view showing measurements to the nosing and rear of the tread for easy layout.

A Riser Options dropdown suggests practical riser configurations (heights/counts) so you can quickly select what suits your situation.

Key Features

• Calculate riser height and count
• Use your specified tread depth (input)
• Compute stringer length and angle
• Two diagrams: overall stairs and stringer layout with nosing/rear-of-tread references
• Riser Options dropdown for quickly choosing suitable riser height/count targets

How to Use

1. Enter the total rise (floor-to-floor height)
2. Input available horizontal run space
3. Enter your desired tread depth (and nosing if applicable)
4. Use the Riser Options dropdown to pick a suggested riser height/count, or adjust manually
5. View calculated riser count/height, total run, stringer length, and stair angle
6. Use the stringer layout diagram to mark from the nosing and rear of tread positions during layout
7. Adjust parameters as needed for optimal results