How many tiles do I need for an area?

Enter the tile length and width, then enter either the total area or the surface dimensions. The calculator accounts for the grout gap and rounds the required tile count up to a whole tile.

What does the gap size mean in a tile calculator?

Gap size represents the grout or spacing between adjacent tiles. A positive value increases the effective spacing; a negative value can be used to represent tile overlap.

Can I use the Tile Calculator for walls and floors?

Yes. The calculator can be used for floors, walls, backsplashes, roofs and other surfaces when the area or dimensions of the surface are known.

How do I calculate the number of boxes of tile?

Enter how many tiles are contained in one box. The calculator divides the required whole-tile count by the tiles per box and rounds up to the next complete box.

Should I order extra tiles?

A calculator estimate does not account for every real-world cut, breakage or future repair need. It is generally sensible to order some additional tiles, especially for complex layouts or areas with many cuts.

Tile Calculator

Q: Can the Tile Calculator estimate cost?

Yes. Enter an optional price and choose whether the price is per tile, per box, per square foot or per square meter to estimate the material cost.

Estimate the number of tiles needed for a floor, wall or other surface, including tile size, grout gap, boxes and optional material cost.

Calculate Tiles Needed

Enter the tile size and choose either a total area or surface dimensions. Add the grout gap, box size and optional price to get a complete material estimate.

Tile Size

Length

Width

Area to Cover

Use Dimensions Use Total Area

Length

Width

Total Area

Gap Size

Grout / Overlap Gap

Use a positive value for a grout gap. Use a negative value for tile overlap.

Tiles per Box

Price

How to Use the Tile Calculator

Enter the length and width of one tile and select their units.
Choose Use Dimensions or Use Total Area for the surface you want to cover.
Enter the gap size between tiles. Use a negative value when tiles overlap.
Optionally enter the tiles per box to estimate the number of boxes required.
Optionally enter a price and choose whether it is per tile, box, square foot or square meter.
Click Calculate Tiles to see the tile count, boxes and estimated cost.

Results are planning estimates. Actual tile requirements can vary because of cuts, breakage, room shape, installation pattern and future replacement needs.

Frequently Asked Questions (FAQs)

Enter the tile dimensions and either the total area or surface dimensions. The calculator accounts for the entered grout gap and rounds the required tile count up to a whole tile.

Gap size represents the spacing between adjacent tiles, commonly the grout line. A positive value increases effective spacing, while a negative value can represent overlap.

Yes. You can use the calculator for floors, walls, backsplashes, roofs and other surfaces as long as you know the surface area or its dimensions.

Enter the number of tiles contained in one box. The calculator divides the required tile count by that box quantity and rounds up to the next complete box.

Yes. Enter an optional price and select whether the price is per tile, per box, per square foot or per square meter to calculate an estimated material cost.

It is usually wise to have additional tiles available for cuts, breakage and future repairs. The exact allowance depends on the layout, room shape and installation conditions.