Construction & Materials
Tile Calculator
Tile: tile Calculator divides the surface area by the area one tile covers, applies the waste % you enter, and rounds up to whole tiles. Worked through below with real figures, and the calculator repeats the working on your own inputs — free, on-device, instant.
Tile Calculator is a browser-based way to estimate tiles for a surface. Feed it your room length, room width, tile length and tile width and it computes the number of tiles on the spot, keeping your data local.
Estimate only — not engineering or contractor advice. Quantities depend on the area, the product size and the waste % you enter, plus cuts, layout and openings, so confirm sizes with your supplier.
About this calculator
It matters before you buy: a clean volume estimate plus a waste allowance beats a guess every time. The governing relationship: Tile Calculator divides the surface area by the area one tile covers, applies the waste % you enter, and rounds up to whole tiles. See it on real numbers: A 4 m × 3 m floor is 12 m². With 0.33 m × 0.33 m tiles (~0.109 m² each) you need ~110 tiles plus ~10% spare ≈ 121 tiles . The calculator above applies the same steps to whatever you enter — computed locally, nothing sent anywhere.
How to use
- Enter the room length in feet.
- Enter the room width in feet.
- Enter the tile length and width in inches.
- Tap Calculate to see tiles needed and the room area.
Why use the Tile Calculator
Instant
Every quantity is worked out on your device the moment you tap Calculate.
Private
The numbers you enter stay in your browser and are never uploaded or saved.
Free
No signup, no paywall, and no ads placed inside your results.
Works offline
Once the page has loaded it keeps working on a weak or dropped connection.
Mobile-first
Laid out for phones and tablets on site just as much as for desktops.
Planning estimates
Results are simplified planning estimates; real material needs vary by product size, waste, layout, local codes, and site conditions, so confirm before you buy or build.
Common uses
Use it when estimating tiles for a room
Use it for a bathroom or kitchen retile
Use it when budgeting a tiling job
Use it before a trip to the tile shop
Use it when ordering boxes of tiles
Use it for tile count from room and tile size
Technical notes
Tile Calculator divides the surface area by the area one tile covers, applies the waste % you enter, and rounds up to whole tiles.
Includes the waste % you enter; confirm coverage rates and material sizes with your supplier before ordering.
All arithmetic runs in your browser using double-precision floating point, so extreme inputs may show tiny rounding differences.
Worked example
A 4 m × 3 m floor is 12 m². With 0.33 m × 0.33 m tiles (~0.109 m² each) you need ~110 tiles plus ~10% spare ≈ 121 tiles.
FAQ
Does the Tile Calculator use room dimensions?
Yes. It multiplies the room length by width to find the area, then works out tiles from your tile size.
Does the Tile Calculator send my room size anywhere?
No. The Tile Calculator runs in your browser and the room figures are never uploaded.
How does waste affect the tile count?
Waste is added as a percentage on top of the bare-area count to cover cuts and the odd broken tile.
Can I use rectangular tiles?
Yes. Enter different length and width values in inches and the tile area adjusts automatically.