Plan stair rise and run dimensions from the calculator inputs.
rise/run relationships from page inputsUses the geometry fields shown in the tool. Confirm local building code limits.
This stair calculator estimates rise, run, and related staircase dimensions from the inputs on the page. Building codes vary by location, so treat results as planning figures and confirm with a local code reference.
For floor area before laying finishes, use the square footage calculator. For covering materials, open the tile calculator or the roofing calculator.
No. It estimates riser count. Stringer geometry needs tread depth and more detail.
Many interior targets fall near 7 inches, but your code and comfort preferences matter more than any single number.
No. It is a planning aid. Confirm with local code and a qualified builder.
Total rise 108 inches with a 7 inch target rounds to 15 risers. Actual riser height is then 108 ÷ 15 = 7.2 inches.
Rounding locks the count. Divide total rise by that count to get the true riser height.
From finished upper walking surface to finished lower grade or deck.
No. Landings, headroom, and handrails need separate checks.
Adjust the target height and recount until the true riser is within local limits.
At Multicalify, we make everyday calculations simple, fast, and accessible to everyone.