Home › Building & roofing › Tile Calculator

Tile Calculator

How many tiles and boxes for a floor or wall, including grout joints and waste.

Area to tilesq ftTile lengthinTile widthinGrout jointinWaste%Tiles per boxtiles

How it's calculated

Each tile covers (length + grout) × (width + grout) ÷ 144 sq ft. Tiles = area ÷ that coverage, plus waste, rounded up. Use 10% waste for straight lay and 15% for diagonal or herringbone.

Example

120 sq ft of 12 × 24 tile with ⅛-inch joints and 10% waste: 65 tiles, or 9 boxes of 8.

Waste by layout

Put this calculator on your website: free

Pool builders, landscapers, contractors and supply stores: give your customers a calculator that answers "how much do I need?" right on your own website. Copy the code below and paste it into any page. No sign-up and no cost. It stays up to date automatically.

<iframe src="https://tapemeasuremath.com/embed/building/tile-calculator/" title="Tile Calculator" width="100%" height="460" style="border:1px solid #ddd;border-radius:10px;max-width:760px" loading="lazy"></iframe> <p style="font-size:12px;margin:4px 0 0">Tile Calculator by <a href="https://tapemeasuremath.com/building/tile-calculator/" rel="nofollow">Tape Measure Math</a></p>

Copy embed code See all calculators you can embed

More building & roofing calculators

• Board Foot CalculatorBoard feet for hardwood and rough lumber, the unit it is priced by.…
• Stair CalculatorNumber of steps, riser height, tread run and stringer length from the …
• Roof Pitch CalculatorRoof pitch, angle and slope multiplier from rise and run.…
• Roofing CalculatorRoof area, squares and shingle bundles from the house footprint and pi…
• Rafter Length CalculatorCommon rafter length from building span, pitch and overhang.…
• Deck Board CalculatorNumber of deck boards and joists for a rectangular deck.…