Stair Calculator

Enter the total rise to see the number of steps, riser height and how far your stairs will extend.

Karem Woodcraft

Made to order · Bayswater

Calculated live

Enter the floor-to-floor rise in millimetres and choose a tread depth. The live drawing shows how many steps you need, the riser height and the horizontal space the staircase takes up. Results are indicative. Karem confirms the final dimensions when quoting.

Worked example. A 1,000 mm total rise and 240 mm treads gives 6 rises of about 167 mm and 5 treads, with an indicative run of 1,200 mm.

Total rise — floor to floor

The full vertical height the stair has to climb.

Kit width — how wide the treads are

The width across the stair — the length each tread is cut to.

Tread — how deep each step

Timber — the species

Rises —

Steps (treads)—

Riser height—

Projects out—

See rise and run on the stair drawing

—

Section — not to scale

Indicative only — we confirm the final geometry to code when we quote 240 residential · 290 premium & commercial

David · Karem Woodcraft

Outdoor timber stair rise and run

Enter the vertical distance between the finished levels. For a 1,000 mm total rise, the calculator suggests six rises of about 167 mm and five treads. The run is 1,200 mm at 240 mm going, or 1,450 mm at 290 mm going. Ask the workshop to confirm dimensions before ordering.