How much extra tile should I buy?
15% is a common starting point for rectangular rooms. Complex layouts or large format tile may need 18–20%.
Tile projects usually need more waste than laminate because of cuts around fixtures and breakage. Default waste is 15%.
Default 15%
15% is a common starting point for rectangular rooms. Complex layouts or large format tile may need 18–20%.
Multiply tile length × width in inches, divide by 144 for sq ft per tile, then multiply by pieces per box. Or use the coverage printed on the box.
The math is the same — enter wall length and height as your room dimensions. Consider extra waste for outlets and niches.
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