Stair
Stair Calculator
Rise, going, step count and total run for a staircase, checked against building regulations.
risers = ceil(height ÷ max rise)
Also called staircase calculator · stair rise and run
Home & Construction · 4 calculators
Stair Calculators
Stair rise and run, number of steps, riser height, tread depth, angle, stringer length and stair materials.
Stair
Stair Stringer Calculator
Stringer length, board size and cutting layout for a set of stairs.
stringer = √(total rise² + total run²)
Also called stringer length calculator · stair carriage
Stair
Stair Material Calculator
Timber for treads, risers, stringers and the handrail for a staircase.
tread area = (risers − 1) × (going + nosi…
Also called stair timber calculator · staircase materials list
Stair
Stair Flooring Calculator
Flooring material needed to cover stairs, including treads, risers and nosings.
area = (tread + riser + nosing) × width ×…
Also called stair carpet calculator · staircase flooring
Key stair formulas
| Stair | risers = ceil(height ÷ max rise) · rise = height ÷ risers |
|---|---|
| Stair Stringer | stringer = √(total rise² + total run²) |
| Stair Material | tread area = (risers − 1) × (going + nosing) × width |
| Stair Flooring | area = (tread + riser + nosing) × width × steps × (1 + waste) |
Stair questions
What is the ideal stair rise and going?
Around 180 mm rise and 250 mm going for a domestic staircase, giving an angle of about 36°.