Stukko
Calculators
Calculators
EN

How much do I need to buy?

Six free calculators for the materials in a room: tile, paint, wallpaper, laminate and flooring, plaster and screed, concrete. Each one subtracts doors and windows, applies the right waste for the pattern, and rounds up to the boxes, tins, rolls and bags you can actually buy.

Start with tiles All calculators

How it works

Three steps to a shopping list
  1. 1

    Measure the room

    Length and width, or the area if you know it. Add the doors and windows to leave out.

  2. 2

    Pick the material

    Tile size and joint, tin coverage, roll width and repeat. Waste is preset for the pattern.

  3. 3

    Get the shopping list

    Whole boxes, tins, rolls and bags, with the formula under every number so you can check it.

  • 6 calculators
  • 4 languages
  • Metric and imperial
  • Free, no account

Calculators

Pick the material. Every calculator rounds up to what the shop actually sells.

Counted the way a fitter counts, not the way a label guesses.

The details that make the difference between one trip to the store and three.

  • Joints and patterns

    The joint is in the count. A 30 cm tile with a 3 mm joint covers 30.3 cm, and the pattern sets the waste, so the number is right before you add your own margin.

  • Doors and windows

    Openings are subtracted, not ignored. Add each door and window once; the area comes off every wall calculation that uses it.

  • Shows its working

    Every result has the formula under it. Check the number before you spend money on it, or show it to the person who is paying.

  • Metric or imperial

    Match the packaging in your hand. Switch per calculator; the engine converts once and keeps every figure consistent.

  • Rounds up to what you can buy

    Boxes, tins, rolls and bags. Exact quantities are shown too, but the headline is the number of packages to put in the trolley.

  • Private and offline

    No ads, no cookies, no account. Every calculation runs in your browser. Your last inputs stay on your device and nowhere else.

FAQ

Some frequently asked questions.

Each calculator page has its own, longer set.

Is Stukko free?

Yes. The web calculators are free, with no ads, no account and no cookies.

How much extra tile should I buy for waste?

Five percent for a straight grid on a simple rectangle, eight percent for a brick or offset bond, and fifteen percent for diagonal or herringbone laying.

Does the joint width really change the count?

Yes. The tile plus its joint is the repeating unit, so a wider joint means fewer tiles per square metre.

Does it work without an internet connection?

Yes. Every calculation runs in your browser. Once a page has loaded it keeps working with no connection.