# Tile Calculator Estimate tile quantity, grout, thinset, and project cost from room dimensions, tile size, layout pattern, and optional pricing. Canonical page: https://invoicemama.com/calculators/tile-calculator This is a free browser calculator. Treat results as planning aids and confirm figures against your own measurements, codes, and professional judgment. ## How to use this tile calculator Enter floor or wall area, tile size, grout joint, waste percent, and layout complexity to estimate tile pieces and boxes to order. ### 1. Measure surface area Enter length times width for each surface or total square feet. For showers, include curb and niche areas if you tile them. ### 2. Enter tile and joint size Pick tile length and width plus grout line width so coverage math matches the actual installed module. ### 3. Set waste and layout factor Raise waste for diagonal patterns, narrow strips, or rooms with many corners. Straight grids use the lowest practical waste. ### 4. Order rounded-up boxes Use whole-tile and whole-box counts from the calculator and buy dye-lot matched extras for future repairs. ## Frequently asked questions ### How much extra tile should I order for waste? It depends on the layout pattern and how complicated the room is. Straight grids often start around 10% waste. Running bond and basketweave are a bit higher. Diagonal and herringbone layouts need more because of angled cuts. Our calculator applies your waste percentage first, then scales the ordered area by a simple, moderate, or complex room factor so you can match how you really install. ### How are tile boxes calculated? We divide the total square footage you need after waste and complexity by the coverage of one tile including the grout joint, round up to whole tiles, then divide by how many tiles come in each box and round up again. If you only enter a price per square foot, we estimate tile cost from the area with waste instead. ### How does this calculator estimate grout bags? We estimate the fraction of the wall or floor that is grout rather than tile, multiply by your joint depth, convert to an approximate weight using a standard grout density assumption, and divide into 25 pound bags. Always confirm against the grout manufacturer sheet for your exact product and joint size. ### Sanded versus unsanded grout: how do I choose? Narrow joints under one eighth inch usually call for unsanded grout, which is easier to work into tight spaces and is common on polished stone and glass. Wider joints benefit from sanded grout for strength. In showers and other wet areas, many pros also offer epoxy grout for maximum water and stain resistance. ### Can I use this for backsplash and shower projects? Yes. Pick the surface type for tailored grout guidance. Enter dimensions or total square footage, your tile size, joint width and depth, pattern, and optional pricing. The tool is built for floors, walls, backsplashes, showers, and ceilings. ### Is this tile estimate binding for ordering? No. All outputs are planning estimates. Real jobs vary with substrate flatness, tile caliber, pattern adjustments, and installer technique. Always verify quantities with your supplier and crew before you order. ## Tile Pros: Turn Estimates Into Invoices Fast Invoice Mama helps tile setters, remodelers, and contractors create professional invoices and estimates in seconds. Use this calculator on site, then bill with confidence. - [Create your first invoice free](https://app.invoicemama.com/sign-up) --- Invoice Mama is invoicing software for contractors, freelancers, and small businesses. It is not a tax, legal, or accounting firm. For current pricing, use the live pricing page. **More:** [Home](https://invoicemama.com/) - [Pricing](https://invoicemama.com/pricing) - [Guides](https://invoicemama.com/guides) - [Tools](https://invoicemama.com/tools) - [Calculators hub](https://invoicemama.com/calculators)