What Is the U-Shaped Calculator?
Plan U-shaped stairs with two parallel flights connected by a 180-degree landing platform. This calculator determines riser height, tread depth, landing dimensions, and the total floor space required for both flights. U-shaped stairs are ideal for two-story homes where space efficiency and fall protection are priorities.
How to Use This Calculator
- Enter the total floor-to-floor rise.
- Set your desired tread depth and stair width.
- Configure the landing dimensions between the two flights.
- Review the calculated footprint, individual riser height, and flight lengths.
Why Accurate U-Shaped Calculations Matter
U-shaped stairs require more floor area than L-shaped alternatives but provide superior safety. The 180° landing acts as a fall-arrest point. The gap between the two flights (well width) must accommodate handrails on both sides.
Common U-Shaped Mistakes to Avoid
- Leaving too narrow a well opening between the two flights. Both flights typically need their own handrail along the open side, and a cramped well makes both rails feel like they're closing in on the walkway.