How to calculate tiles needed
Divide the total project area by the area of one tile, then add your selected waste allowance.
Tile calculation example
A 12 × 10 foot room contains 120 square feet. A 12 × 12 inch tile covers approximately one square foot.
Diagonal layouts and complex patterns may require a larger waste allowance.
Frequently asked questions
Should I order extra tile?
Yes. Extra material helps account for cuts, breakage and future repairs.
Does grout spacing affect the result?
This simplified calculator uses nominal tile dimensions only.
Can I use this for wall tile?
Yes, as long as the wall area is entered as length and width.
Using this calculator effectively
The tile calculator compares total project area with the face area of one tile and applies a waste allowance. It is useful for simple floor and wall layouts before grout joints, patterns and cuts are planned in detail.
Common uses
- Estimating tile quantity for floors and walls.
- Comparing different tile dimensions for the same project area.
- Adding extra tiles for cuts, breakage and later repairs.
Tips for a better estimate
- Measure the full tiled area and subtract only openings that materially change the quantity.
- Increase waste for diagonal layouts, niches and complex patterns.
- Confirm how the manufacturer packages or sells the tile before converting pieces into boxes.
Related calculations
Siding Calculator · Square Footage Calculator · Flooring Calculator