Layouts
Straight vs quarter-turn stairs: choosing a layout
Straight or quarter-turn stairs? Compare footprint, landings, comfort and circulation to pick the layout that fits a compact room or a corner.
Straight stairs are simple
Straight stairs are simple to frame, measure and picture. When there is enough uninterrupted run, a straight flight is often the cheapest layout.
Its drawback is footprint: a comfortable straight stair can need more length than many renovation spaces have.
Quarter-turn stairs save run
A quarter-turn stair changes direction with a landing or turning steps, which makes it easier to fit into a corner or a compact plan.
The landing also gives people a place to pause, which can make the stair feel calmer in daily use.
Compare both before deciding
Keep the same total height and width, then compare pitch, going and the circulation space around the lower and upper floor.
Pick the layout that fits the room and still feels natural to walk, even if another option takes less floor space.
Put this into practice
Open the editor and test these numbers on your own staircase, with live drawings and a comfort score. No account needed.
Related guides
Layouts
Planning a half-turn staircase
The dimensions to check when designing a 180-degree half-turn (U-shaped) staircase with two flights: flight balance, landing size and arrival direction.
Stair calculations
How to calculate stair rise and run
Work out stair riser height, going, pitch and total run from your floor-to-floor height, with the typical ranges to aim for before you build.
Comfort
Using the Blondel formula for comfortable stairs
What the Blondel formula (2h + g) measures, why the target sits near 600 to 640 mm, and how to use it to balance riser height and tread depth.