Stair Calculator NZ

Calculate stair risers, tread going, total run, pitch and stringer length, with a live side-view drawing and basic geometry checks.

← TradeQuote Home

Stair dimensions

Stair type

Geometry preset

Maximum riser

Minimum tread / going

Maximum pitch

Set-out

Total rise finished floor to finished floor

Tread going

Riser calculation

Number of risers

Available horizontal space optional

Nosing projection drawing/reference only

Live stair profile

Drawing is schematic and automatically scales to the calculated stair.

Optional print details

Company name

Project / address

Stair set-out

Calculated riser height

— mm

Enter the stair dimensions to calculate.

Number of risers —

Number of treads —

Tread going —

Total horizontal run —

Stair pitch —

Stringer slope length —

2R + G comfort figure —

Available run —

Geometry check —

Riser height —

Tread going —

Pitch —

Rise between landings —

Set-out aid only. This calculator checks basic stair geometry only. It does not check stair width, headroom, handrails, barriers, structural stringer sizing, slip resistance, nosings, landings or project-specific consent requirements.

Put this calculator on your website

Builders, stair manufacturers and timber merchants may embed this calculator free of charge.

<iframe src="https://tradequote.co.nz/tools/stair-calculator/?embed=1" title="Stair Calculator NZ" loading="lazy" style="width:100%;min-height:1700px;border:0;border-radius:12px"></iframe>

Calculator by Olivergroup Software