Tile calculator: tiles, boxes and cost for floors and walls
100 sq ft of 600 x 600 mm tiles works out to 28 tiles, or 7 boxes of four, including 8% wastage.
Counts tiles and boxes for a floor or wall area, with a wastage allowance, any tile size including custom, and cost from your box price and laying charge.
How it is worked out: tiles = ceiling(area x (1 + wastage) / tile area), boxes = ceiling(tiles / tiles per box)
Figures reviewed 10 September 2026 by 256 Grays. Checked each quarter.
Questions people ask
How many 600 x 600 mm tiles for 450 sq ft?
126 tiles including 8% wastage, or 32 boxes of 4.
How do I use a custom tile size?
Choose Custom size and enter width and height in mm, cm or inches.
How many tiles come in a box?
It varies with size: 600 x 600 mm is usually 4, 300 x 300 mm is 9 or 10, 800 x 800 mm is 3 and 1200 x 600 mm is 2. Check the box and set the figure here before ordering.
Common values
| Tile size | Area of one tile | Tiles for 100 sq ft |
|---|---|---|
| 300 x 300 mm | 0.97 sq ft | 112 |
| 300 x 600 mm | 1.94 sq ft | 56 |
| 600 x 600 mm | 3.88 sq ft | 28 |
| 800 x 800 mm | 6.89 sq ft | 16 |
| 600 x 1200 mm | 7.75 sq ft | 14 |
| 1200 x 1200 mm | 15.50 sq ft | 7 |
| 200 x 1200 mm plank | 2.58 sq ft | 42 |
Built by 256 GRAYS, an interior architecture and 3D visualisation studio in Mumbai.