Headroom Calculator
Calculate the available headroom on a staircase from floor-to-floor height, stair angle, and landing depth.
How to Use the Headroom Calculator
- Enter the floor-to-floor height in metres.
- Enter the stair angle in degrees.
- Enter the landing depth in metres.
- Click Calculate to check headroom and code compliance.
Cas d'utilisation
- •Checking headroom compliance in new stair designs.
- •Evaluating existing stairs before renovation.
- •Loft conversion stair planning.
- •Commercial building accessibility audits.
Formule
Headroom = (floor-to-floor height − landing depth × tan(angle)) × 1000 mm.
Questions fréquemment posées
What is the minimum headroom for stairs?
Most building codes require at least 2000 mm (2 m) of clear headroom measured vertically above the stair nosing.
What stair angle is typical?
Residential stairs are typically 30–38°; commercial stairs 25–35°.
Is it free?
Yes, all calculators on OhMyCalc are completely free.