RoCa - roof calculator

Calculate roof area and tile requirements in seconds — right from your iPhone or iPad.

RoCa is the fast, no-nonsense roof calculator for anyone who needs to know how many square meters of roof they have and roughly how many tiles they'll need. Whether you're planning a new build, renovating a house, or just estimating
material — RoCa gives you sensible numbers instantly.

▸ SIX ROOF SHAPES • Gable / saddle roof • Hip roof • Half-hip roof
• Mono-pitch / shed roof • Tented / pyramid roof
• Through-roof

▸ SIMPLE INPUT
Length, width, eaves overhang, slope angle, and where needed, ridge length or hip height. Use sliders or the keyboard. Live preview shows which dimension
you're currently editing.

▸ PRECISE MATH
Clean geometry implementation — no rough rules of thumb, no lookup tables with rounding errors. Proven formulas per roof type, including overhangs.

▸ TILE PICKER
Pick a tile type and RoCa estimates the count automatically: • Frankfurter pan tile (10/m²)
• Double-pan interlocking tile (12/m²)
• Plain tile, double-lap (36/m²)
• Large-format tile (8/m²)
• Smooth flat tile (10/m²)
• Generic average (15/m²)

▸ SHARE
Send your result by message, email or AirDrop.

▸ OFFLINE-FIRST All calculations run locally. Your input never leaves the device. No sign-in, no account, no cloud.

▸ MODERN
Built for iOS 16+. Dark mode, German, English, iPhone and iPad.