Calculate how many tiles you need for any floor or wall. Enter area size, tile size, and waste percentage. Shows metric and imperial results. Free, no signup.
12x24 Tile Calculator
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About 12x24 Tile Calculator
A 12 by 24 inch tile covers exactly 2 square feet, so the raw tile count is half the floor area in square feet. A 12 by 10 foot room of 120 square feet needs 60 tiles before waste and 66 with a 10 percent allowance. This page opens in feet and inches with the tile size already set, so you only enter the room. Twelve by twenty four is the most popular floor tile in North America, and it brings one installation rule worth knowing before you plan the layout. Rectangular porcelain tiles are slightly bowed along their length, and industry guidance for tiles with a side longer than 18 inches is to offset each row by no more than a third of the tile, not the half offset of a classic brick pattern. A half offset puts the high centre of one tile beside the low ends of its neighbour, which shows as lippage. Most boxes hold 8 tiles, or 16 square feet, though this varies with thickness, so enter the number on your box to get a box count. Allow 10 percent waste for a straight lay and 15 percent for herringbone or diagonal. The metric near-equivalent is 30x60 cm, and for square tiles see 24x24 Tile Calculator: How Many Tiles & Boxes per Sq Ft and 12x12 Tile Calculator: Tiles Needed per Square Foot.
How to use 12x24 Tile Calculator
Choose metric or imperial, then enter the floor, wall or shower dimensions
Enter tile length and width in centimetres or inches
See tile count and optional box count in metric and imperial
Frequently Asked Questions
How many 12x24 tiles per square foot?
Half a tile, since each 12x24 tile covers 2 square feet. For 100 square feet you need 50 tiles before waste and 55 with 10 percent extra.
How many 12x24 tiles for a 10x10 room?
A 10 by 10 room is 100 square feet, so 50 tiles before waste and 55 with a 10 percent allowance. With 8 tiles per box that is 7 boxes.
How many 12x24 tiles are in a box?
Commonly 8 tiles covering 16 square feet, but some ranges pack 6 or 7 depending on thickness. Check the label and enter it in the tiles per box field.
What offset should I use for 12x24 tiles?
A third of the tile length, so 8 inches, or less. Industry guidance for tiles with any side over 18 inches recommends no more than a 33 percent offset, because the slight bow in long tiles causes lippage at a 50 percent offset.
Can I enter my tile size in centimetres instead?
Yes. Switch the units to metric to enter the room in metres and the tile in centimetres. Note that a 30x60 cm tile is slightly smaller than 12x24 inches, at about 11.8 by 23.6 inches.