Stair Calculator: UK Part K

Design a staircase that passes, or check one that exists - with every result cited against Approved Document K (England). Stair Calculator is built for UK joiners, carpenters, loft conversion firms, builders and serious DIYers. Enter the total rise - floor to floor, including finishes, and the app reminds you of that classic site mistake - and it works out a compliant flight: riser count, an exactly uniform individual rise, going, pitch and the 2R+G comfort value. Every line carries a pass or fail badge with the exact rule behind it, for example "Pitch 43.1 deg - FAIL - AD K max 42 deg for a private stair". DESIGN SOLVER - Height and available run: a fully optimised flight - Height only: the minimum run a compliant flight needs - Height with a preferred rise or going: fix one, solve the rest - Risers divided exactly, never rounded into a flight that no longer sums to your total rise -…