Tile Quantity Calculatorv1.0.0

Estimate the exact number of tiles required to cover any rectangular surface such as a floor, wall, backsplash, or rooftop. The calculator accounts for grout gaps, tile overlap, and a configurable waste percentage to give an accurate material count before you purchase.

• Enter the Area Length and Area Width of the surface you plan to tile. Select the matching unit from the Area Unit dropdown. Both imperial (inches, feet) and metric (centimeters, meters) measurements are supported.
• Enter the Tile Length and Tile Width for a single tile. Choose the correct unit from the Tile Unit dropdown. Common tile sizes include 12 x 12 inches, 6 x 24 inches, and 30 x 60 centimeters.
• Set the Gap Size to specify the spacing between tiles. A positive value represents a grout gap; a negative value represents tile overlap (common for roof tiles or siding). The default gap is 1/8 inch, a standard grout line width.
• Adjust the Waste Percentage to account for cuts, breakage, and pattern alignment. A value of 10% is the default and works well for standard grid layouts. Use 15% or higher for diagonal, herringbone, or running bond patterns.
• Open Settings to enter the Price per Tile, Tiles per Box, and Price per Box for cost estimation. The calculator computes both per-tile cost and box-based cost when the values are provided.
• All numeric fields accept fractions (3/4), mixed numbers (5 1/16), and decimals (0.75). Click Calculate to update results or allow the automatic 500-millisecond debounce to recalculate as you type.
• Click Reset to clear all entries and restore default values.

The core formula divides the surface into a grid of effective tile cells. Each effective cell measures (tile length + gap) by (tile width + gap). The calculator determines how many cells fit along each dimension, multiplies to get total tiles, then adds the waste percentage. Formula: Tiles Along Length = ceil(Area Length / (Tile Length + Gap)), Tiles Along Width = ceil(Area Width / (Tile Width + Gap)), Total Tiles = Tiles Along Length x Tiles Along Width, Tiles With Waste = ceil(Total Tiles x (1 + Waste / 100)).

Plan material purchases for a wide variety of tiling projects. Whether you are covering a small bathroom floor or an entire outdoor patio, this calculator reduces guesswork and helps avoid costly over-ordering or return trips to the store.

• Bathroom Renovation: Measure the floor area (for example, 8 feet by 5 feet) and select a 12 x 12 inch tile with a 1/16 inch grout gap. The calculator instantly shows the number of tiles plus a 10% waste buffer for cuts around the toilet and vanity.
• Kitchen Backsplash: Enter the backsplash area (for example, 30 inches by 144 inches) and use a 3 x 6 inch subway tile with 1/8 inch spacing. Compare costs by entering the price per tile or the price per box to find the most economical option.
• Roof Tiling: Enter the roof surface area in square meters and specify a negative gap value (for example, -50 mm) to account for tile overlap. Increase the waste percentage to 15% for ridge and hip cuts.
• Outdoor Patio: Plan a large paver installation by entering patio dimensions in feet and selecting 18 x 18 inch pavers with 1/4 inch spacing. Use the box count and price per box outputs for a quick budget estimate.
• Commercial Flooring: Estimate tile quantities for large office spaces or retail floors. Enter dimensions in meters, select 60 x 60 centimeter porcelain tiles, and set the gap to 2 millimeters. Export the results for contractor bids.
• DIY Wall Accent: Measure a feature wall (for example, 10 feet by 8 feet) and select mosaic sheets or individual tiles in centimeters. Adjust waste to 12% for intricate designs or pattern matching.
• Contractor Estimation: Enter room dimensions from a floor plan and test multiple tile sizes to compare material counts and costs before presenting options to a client.