Measure the room and see exactly what to buy: cans of paint, boxes of tile, packs of flooring — and also sheets of drywall, rolls of wallpaper, bags of concrete, mulch or gravel, and lengths of trim. Every answer is rounded up to whole packs, so you never come home one can short.

8 CALCULATORS
• Paint — walls and ceiling, doors and windows taken off, coats, primer for new drywall or plaster
• Tile — areas and cut-outs, tile and box size, laying pattern, turning tiles
• Flooring — packs by box coverage, laying pattern, underlay rolls
• Wallpaper — rolls counted strip by strip, with pattern repeat
• Drywall / plasterboard — sheets for walls and ceilings
• Concrete — slabs, footings and post holes, in bags, with a ready-mix hint for big jobs
• Mulch, gravel and topsoil — bags or bulk bags
• Baseboard / skirting board — whole lengths, wall by wall

BUY THE RIGHT AMOUNT
• Every answer is in whole packs, cans, bags and sheets, always rounded up
• See the exact amount you need and how much will be left over
• Waste is always shown ("incl. 10 % waste") and you can change it
• "How we calculated" shows every step of the sum

IMPERIAL AND METRIC
• Imperial (feet and inches, gallons, quarts, sq ft, cu yd) or metric (m, L, m², m³) — switch any time
• Type feet and inches in separate boxes; fraction keys ½ ¼ ¾ ⅛ above the number pad
• British words with metric: tin, plasterboard, skirting board
• Pack sizes for the US, Canada, UK, Ireland, Australia and New Zealand built in — pick your region in Settings; with Pro, add the sizes your own store sells

SAVE YOUR PROJECTS
• Save calculations into a project ("Kitchen refresh": walls, floor, skirting)
• Open a saved calculation, change a size and update it
• Your typing is kept even if the app is closed

PRO — ONE PAYMENT, NO SUBSCRIPTION
• Unlimited projects (without Pro: one project)
• Shopping list for the whole project: tick off what you bought, add your own items, combine the same paint across rooms
• Prices and a cost total
• Share a project as a PDF
• Your own pack sizes: the cans and bags your store sells
Every calculator works without Pro. Pro is a single in-app purchase through Google Play.

PRIVATE AND OFFLINE
• No account, no sign-in
• Works without internet; your projects stay on your phone
• No data collected

Results are estimates for planning a purchase. Always check the coverage and instructions on the product you buy.

Questions or ideas: hello@kettlebright.com