Tile Calculator
Find out how many tiles and boxes you need for your floor or wall project, including a percentage for breakage and cuts. Optional cost estimation helps budget your remodel.
Complete Guide: Tile Calculator
Everything you need to know about using this tool effectively
This calculator estimates how many tiles you need for any floor or wall installation based on the area dimensions, tile size, and a waste percentage. It accounts for cuts, breakage, and pattern matching so you order the right quantity from the start. Homeowners and contractors use it to avoid costly shortages or excess material.
A project planning tool that multiplies the surface area by the tile count per unit area and adds a waste factor to give you a total tile count. You enter the length and width of the space, the dimensions of your chosen tile, and the expected waste percentage. The output includes the number of individual tiles, boxes needed based on standard box quantities, and total area coverage.
Bathroom remodel
Calculate tiles needed for bathroom floors and shower walls including the extra material for cutting around fixtures.
Kitchen backsplash
Estimate the number of small mosaic or subway tiles needed for a backsplash area between countertops and cabinets.
Living room flooring
Plan a large-format tile installation for an open living area and determine how many boxes to purchase.
Outdoor patio
Figure out how many outdoor-rated pavers or tiles are needed for a patio with a specific layout.
Commercial projects
Contractors use it to generate material lists for office or retail flooring bids.
Enter area dimensions
Type the length and width of the floor or wall area you plan to tile.
Enter tile dimensions
Type the length and width of the individual tiles you plan to install.
Set waste percentage
Choose a waste factor based on your tile pattern. Straight layouts need about 10 percent while diagonal patterns may need 15 percent or more.
View results
The calculator displays the total number of tiles, boxes required, and total coverage area.
Adjust for multiple rooms
Calculate each room separately and add the totals together if your project spans more than one space.
Buy 10 to 15 percent extra tiles beyond the calculated amount to cover cuts, breakage, and future repairs.
Diagonal and herringbone patterns waste more material, so increase the waste percentage accordingly.
Measure your room at the longest and widest points to account for any irregularities in the shape.
Keep leftover tiles from the same production lot for repairs since color matching between batches can vary.
What waste percentage should I use?
For a standard straight-lay pattern, 10 percent is typical. Diagonal layouts usually need 15 percent, and complex patterns like herringbone may require up to 20 percent extra.
Does this calculator account for grout lines?
Yes, you can enter the grout line width and the calculator adjusts the effective tile coverage to include the space taken by grout joints.
How do I measure an irregularly shaped room?
Break the room into rectangular sections, calculate each section separately, and add the tile counts together. This gives a more accurate result than trying to measure the entire shape at once.
Can I use this for wall tiles?
Yes, the calculator works for any flat surface. Enter the wall height and width as the area dimensions and proceed as you would for a floor.
Should I round up the number of boxes?
Always round up to the next full box since you cannot purchase partial boxes. Having extra tiles is better than running short in the middle of a project.