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One square foot is 12 inches by 12 inches = 144 in2

290 ft2 is 41,760 in2 [multiply 290 * 144]

One tile is 256 in2 [multiply 16*16]

So, dividing the tile in2 into the floor in2 [41,760/256] we get a total of 163.125 tiles - say 164 because you cannot by an eighth of a tile.

However, two "real life" factors must be accounted for:

1. I have never tiled a floor where I was not very glad that I purchased 10% more than I needed.

2. Our total may already be greater than needed because we did not take into account the grout lines.

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Q: How many 16x16 inch tiles needed for 290 sq ft?
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