Lay out a staircase that lands right, every time.

Type in your total rise, riser count and tread depth — RiseRun does the division, checks it against common building-code ranges, and draws the stair as you go, so you can see the run before you cut a single stringer.

4″–7¾″Typical riser comfort range
≥10″Typical minimum tread depth
7Fields to fill in — that's it
total run total rise
Rise and run set the pitch of every stair — the calculator starts from these two numbers.

Three numbers in, a full layout out

RiseRun is built around the same figures a carpenter would scratch on a stringer with a pencil, then does the arithmetic without rounding errors.

01

Even risers, automatically

Set your total rise and how many risers you want, and RiseRun divides them evenly so every step on the stair is the same height.

02

A live, to-scale diagram

The stair profile redraws as you type, with the rise, run and pitch angle labelled directly on the drawing.

03

A stringer length you can trust

Total run, diagonal stringer length and stair angle are calculated together, so your cut list and your layout always agree.