Work out how many risers and treads a staircase needs from the total rise and your target riser height and tread depth, and see the total run and the stringer length. Enter the total rise, a desired riser height and a tread depth. This is an approximate estimate for planning; stairs must comply with your local building regulations for riser height, tread depth, headroom and handrails, so check the rules before building. All processing runs locally in your browser. Your data is not uploaded to any server. 100% Local
Choose your units, enter the total rise (floor to floor), a desired riser height and a tread depth, then press Calculate stairs to see the number of risers and treads, the total run and the stringer length.
Riser height and tread depth are limited by building regulations, and the two are usually linked to keep the stair comfortable and safe. The check here uses common comfort ranges only; confirm the actual limits and headroom with your local code or a qualified professional.
Set out the stair carefully before cutting anything, and double-check the headroom and handrail heights against the regulations.