Tile Calculator
Calculate tiles needed for flooring
About the Tile Calculator
Tiling a floor or wall starts with one question: how many tiles do I buy? This calculator answers it from the area you are covering and the size of your tile, then adds a waste allowance for cuts and breakages so you do not run short mid-job.
DIYers and renovators use it before a bathroom or kitchen project, and it handles several areas at once so a room plus a backsplash can be totaled together. Enter your tile dimensions, set a waste percentage, and it returns the base tile count, the count including waste, and an optional cost estimate.
How to Use the Tile Calculator
- Choose your measurement units and enter your tile's length and width.
- Set a waste factor (10% by default) and, optionally, a price per tile.
- Add each area you are tiling with its length and width.
- Read the total area, the base tile count, the count including waste, and the estimated cost.
Why Use ToolForge’s Tile Calculator
- It builds in an adjustable waste allowance, so the count reflects the extra tiles real installations need for cuts and breakages.
- It totals several areas at once, letting you combine a floor and a backsplash, or multiple rooms, in one estimate.
- It returns both the base count and the with-waste count, plus a cost estimate when you add a price.
- It works in your browser with nothing to install.
Frequently Asked Questions
How many tiles do I need?
Divide the area you are covering by the area of a single tile, then round up and add a waste margin. This calculator does that automatically — enter your area and tile size and it returns the count including extra for waste.
How much waste should I allow for tiling?
Around 10% is typical for straight layouts, which is the default here. Add more — 15% or higher — for diagonal patterns, lots of cuts around fixtures, or large-format tiles where breakages are costlier.
Does the calculator account for grout spacing?
It sizes the count from the tile dimensions and the area, not from grout-line spacing, so for tight estimates allow for grout joints and your specific layout. Keeping the standard waste margin generally absorbs the small difference grout lines make.
Should I buy extra tiles beyond the estimate?
It is wise to keep a few spare tiles from the same batch, on top of the waste allowance, for future repairs — dye lots vary between production runs, so a matching replacement bought later may look slightly different.
