Split a total rise into comfortable risers and treads.
The total rise is divided by a comfortable riser height, then the actual riser recomputes so steps split the rise evenly. The riser-to-tread pair sets how safe steps feel, and even splits prevent a dicey last step into a landing.
Stair Riser & Tread
Risers = total rise / target riser; treads = risers - 1
Risers = total rise / target riser; treads = risers - 1 The total rise is divided by a comfortable riser height, then the actual riser recomputes so steps split the rise evenly.
The riser-to-tread pair sets how safe steps feel, and even splits prevent a dicey last step into a landing.
This calculator takes 3 inputs: Total rise, Target riser, Tread depth. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.