Tile Calculator

Summary

The Tile Calculator helps you estimate how many tiles are required to cover any rectangular floor or wall area. Simply enter the room length and width alongside the tile dimensions, then adjust the waste percentage to account for cuts, breakage, and future repairs. The tool computes the total area, the net number of tiles, and the final quantity including waste — all in real time.

How it works

1. Enter the room length and width in your preferred unit (inches, feet, centimeters, or meters).
2. Enter the tile length and width in the same unit.
3. Optionally include a grout joint width to account for spacing between tiles.
4. Set the waste percentage (10% is standard for straight lays; 15–20% for diagonal or complex cuts).
5. The calculator shows total area, tiles needed, tiles including waste, and boxes to buy.

Use cases

• Plan a bathroom floor or wall tile project before visiting the store.
• Estimate material costs by knowing the exact number of tiles required.
• Account for tile cuts along edges and breakage during installation.
• Calculate how many boxes to purchase based on your tile brand pack size.
• Compare different tile sizes to see which fits a room with less waste.
• Re-estimate after changing grout joint width or tile layout angle.
• Provide clients with an accurate tile quantity quote for renovation bids.
• Check if leftover tiles from a previous project are enough for a new area.

Frequently Asked Questions