Free tile calculator to determine exactly how many tiles you need for floors, walls, or backsplash. Includes waste factor, grout, and mortar estimates with cost breakdown.
Room/Area Dimensions
Tile Size
Materials & Waste Factor
Recommended: 10% for straight layouts, 15% for diagonal/patterns, 20% for complex cuts
You might also find these calculators useful
Our free tile calculator helps you determine exactly how many tiles you need for any flooring, wall, or backsplash project. Simply enter your room dimensions and tile size to get an accurate count that includes waste factor for cuts and breakage. Stop guessing and avoid costly mistakes—calculate your tile needs in seconds.
A tile calculator is a tool that calculates the number of tiles needed to cover a specific area. It takes into account the room dimensions, tile size, grout spacing, and an important waste factor for cuts, breakage, and pattern matching. Whether you're tiling a bathroom floor, kitchen backsplash, or entire living room, this calculator gives you the exact quantity to purchase—plus estimates for grout and mortar.
Tile Calculation Formula
Tiles = (Area ÷ Tile Size) × (1 + Waste%)Calculate ceramic or porcelain tiles for bathroom floors, including extra for toilet and vanity cutouts.
Determine subway tile or mosaic quantities for backsplash projects with outlet and switch cutouts.
Calculate wall tiles for 3-wall shower surrounds, including ceiling if applicable.
Estimate outdoor porcelain or natural stone tiles for patios, including extra for weather-related breakage.
It depends on tile size. For 12×12 inch tiles, you need 1 tile per square foot. For 6×6 inch tiles, you need 4 tiles per square foot. Our calculator handles all common tile sizes automatically.
Buy 10% extra for straightforward layouts, 15% for diagonal or herringbone patterns, and 20% for complex designs or rooms with many obstacles. Always keep a few extra tiles for future repairs.
Divide the room into rectangles, calculate each section separately, then add them together. Use the larger waste factor (15-20%) to account for the additional cuts needed.
Yes, grout lines slightly reduce the number of tiles needed. Our calculator accounts for grout width to give you a more accurate count. Standard grout lines are 1/8 to 3/16 inch.
Our calculator estimates grout and mortar based on your tile size and area. Generally, expect 10-15 lbs of grout per 100 sq ft and 40-50 lbs of thinset mortar per 100 sq ft for standard installations.
Yes! Enter the wall height as length and wall width as width. For multiple walls, calculate each separately or enter the total combined area. Wall tiles typically need 15% waste factor due to more cuts around fixtures.