Enter your floor to floor height and see the risers, treads and run that fit the residential limits.
How it works
Total rise ÷ 7.75 in, rounded up, gives risers. Rise ÷ risers gives each step. Treads are one fewer than risers.
Before you order
- Measure rise from the finished floors, because new flooring changes the bottom step.
- Keep riser heights within 3/8 inch of each other across a flight.
- Check headroom along the whole run before you open a floor.
Common questions
How many risers does a 9 foot ceiling need?
About 14 for a 108 inch rise, which gives risers near 7.7 inches.
What is the maximum riser height?
The IRC limits residential risers to 7 3/4 inches, and some local codes differ.