Stair Calculator

Set out a uniform straight-flight stair and review its risers, goings, run and pitch.

Jurisdiction / guidance context

Units

Scope: geometry only. Select and verify the applicable stair category, occupancy, adopted code edition, landings, headroom, handrails, guards, accessibility, egress width and local amendments separately.

Inputs

Floor-to-Floor Height (mm)

Finished floor level to finished floor level

Recorded Headroom (mm)

Recorded coordination dimension; no automatic verdict.

Maximum risers per flight

User setting; zero keeps one flight.

Intermediate Landing Length (mm)

Stair use / occupancy note

Preferred Rise (mm)

Actual number of risers will be adjusted to suit floor height

Going (mm)

Horizontal distance of each tread (nosing to nosing)

Stair Width (mm)

Results

Enter your floor height and click Calculate.

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Number of Risers

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flights

Flight arrangement

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Developed footprint

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Actual Rise

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2R + G

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degrees

Pitch Angle

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Total Going (plan)

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Rise (imperial)

Calculation method View formula, inputs and sources

Select an application type and calculate a result.

Method

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Inputs used

Calculation trace

Assumptions and exclusions

Save / load

Name

Project

Saved data