How Many Tiles for a Bathroom Floor?

Bathroom floors are small but cut-heavy. Toilets, niches, and door thresholds eat whole tiles fast. Measure the rectangle, then add waste that matches how you will lay the pattern.

Measure net floor area

Length × width of the open floor. The toilet footprint is usually tiled under the pan — do not subtract it unless you are leaving a cut-out.

Alcoves and step-down showers: split into rectangles and add areas.

Waste by layout

Straight lay in a box room: 10% waste is common. Diagonal or herringbone: 12–15%. Large format tiles on a small floor: fewer grout lines but higher breakage risk — keep an extra box.

Boxes, not loose tiles

Suppliers sell by the box. Divide your tile count by tiles per box and round up. Keep one unopened box after the job for future repairs — dye lots change.