{"id":"tile-calculator","name":"Tile Calculator","shortName":"Tile","canonicalUrl":"https://calcurhome.com/calculators/tile-calculator","catalogUrl":"https://calcurhome.com/api/calculators","category":{"id":"flooring-tile","name":"Flooring & tile","url":"https://calcurhome.com/calculators/category/flooring-tile"},"language":"en-US","audience":"US homeowners, DIYers and home-project planners","primaryKeyword":"tile calculator","secondaryKeywords":["tiles needed calculator","tile square footage calculator","tile box calculator","how many tiles do I need"],"description":"Calculate individual tiles and full boxes for a floor or wall using surface size, tile dimensions, pieces per box, grout joints, and waste.","directAnswer":"This tile calculator divides the installation into repeating tile-and-joint modules, rounds rows and columns up, and then adds waste to the resulting piece count. It also converts pieces into full boxes. Complex patterns, borders, niches, and tiles from different dye lots should be estimated separately.","inputs":[{"key":"surfaceLength","label":"Surface length","unit":"ft","defaultValue":12,"min":0.1,"step":0.1},{"key":"surfaceWidth","label":"Surface width","unit":"ft","defaultValue":10,"min":0.1,"step":0.1},{"key":"tileLength","label":"Actual tile length","unit":"in","defaultValue":12,"min":0.1,"step":0.01},{"key":"tileWidth","label":"Actual tile width","unit":"in","defaultValue":12,"min":0.1,"step":0.01},{"key":"groutWidth","label":"Planned grout joint","unit":"in","defaultValue":0.125,"min":0,"max":1,"step":0.0625},{"key":"piecesPerBox","label":"Tiles per box","unit":"tiles","defaultValue":15,"min":1,"step":1},{"key":"waste","label":"Cutting allowance","unit":"%","defaultValue":10,"min":0,"max":50,"step":1}],"formula":{"title":"Tile grid and box formula","expression":"Tiles = ceiling(rows × columns × waste multiplier); boxes = ceiling(tiles ÷ pieces per box)","explanation":"Rows and columns use the actual tile plus grout-joint module. Each direction rounds up before waste because a partial final row or column still requires cut pieces."},"measurementGuide":["Measure each flat floor or wall plane separately and subtract openings only when no cut tiles are required around them.","Use actual tile dimensions, which may differ from the nominal size printed in a product name.","Enter the joint width specified by the tile manufacturer and compatible installation standard.","Count pieces per unopened box directly from the label; do not assume every box covers the same area."],"buyingTips":["Purchase tile from one shade and caliber lot, then verify all cartons before installation begins.","Use a larger allowance for diagonal, offset, herringbone, heavily veined, or color-selective layouts.","Dry-lay representative rows so narrow cuts can be balanced at opposite walls.","Keep labeled spare tiles for repairs because future production lots may not match."],"workedExample":{"title":"Twelve-by-ten-foot tile floor","scenario":"A 12-by-10-foot floor receives 12-inch tiles, 1/8-inch joints, 15 tiles per box, and 10% waste.","result":"The grid requires 120 tiles; adding waste gives 132 tiles, so 9 full boxes are needed."},"commonQuestions":[{"question":"How many extra tiles should I order?","answer":"Ten percent is a common starting allowance for a simple straight layout. Consider 15% or more for diagonal patterns, many corners, fragile tile, strong shade selection, or future repairs. The installer and tile manufacturer should confirm the final order quantity."},{"question":"Does grout-joint width change the tile count?","answer":"Yes. A grout joint adds space between tile faces, so the repeating layout module is slightly larger than the tile itself. The effect may remove a row or column on a large surface, although edge cuts and layout balancing still require judgment."},{"question":"Should I subtract cabinets from kitchen floor tile?","answer":"Subtract permanently covered footprints only when tile will not run beneath them and the installation plan allows that approach. Include toe-kick recesses, appliance openings, and exposed floor. Confirm cabinet sequencing and flooring requirements before reducing the order."},{"question":"Can I combine floor and wall tile quantities?","answer":"Calculate each plane separately, especially when orientation, pattern, cuts, or tile sizes differ. You may combine the final box order only when every surface uses the identical product, shade lot, caliber, and acceptable waste allowance."}],"sources":[{"name":"Tile Council of North America","url":"https://tcnatile.com/resource-center/","note":"Industry installation resources for ceramic and stone tile assemblies."}],"defaultCalculation":{"inputs":{"surfaceLength":12,"surfaceWidth":10,"tileLength":12,"tileWidth":12,"groutWidth":0.125,"piecesPerBox":15,"waste":10},"result":{"value":"9","unit":"boxes","label":"Tile to buy","lines":[{"label":"Surface area","value":"120 sq ft"},{"label":"Layout grid","value":"12 × 10 tiles"},{"label":"Tiles before allowance","value":"120"},{"label":"Tiles including allowance","value":"132"}],"summary":"Plan on 132 tiles, or 9 full boxes at 15 tiles per box.","note":"The grid assumes a straight rectangular layout. Estimate accents, mosaics, borders, herringbone, and separate wall planes independently."}},"reviewedOn":"2026-07-23","disclaimer":"Planning estimate only. Verify product coverage, supplier rounding, local codes and structural requirements before purchase or construction."}