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How many tiles or how much flooring do I need?
Start with the area of the room (length × width), then divide by the size of one tile or plank to get the number of pieces. Because you always break some tiles on cuts and edges — and want spares for future repairs — you add a waste allowance (10% for a straight layout, more for diagonal or herringbone patterns). If your flooring is sold by the box, enter the box’s coverage and this calculator tells you how many boxes to buy.
Always buy a little extra from the same batch — dye lots vary between production runs, and matching later is hard. Keep spare tiles or planks for future repairs.
Frequently Asked Questions
How much waste should I add for tile?
10% for a standard straight layout, 15% for diagonal or patterned floors, and up to 20% for herringbone or rooms with lots of angles and cuts. This calculator lets you pick.
How do I count boxes instead of individual tiles?
Enter the “coverage per box” (printed on the box, e.g. 20 sq ft) and the calculator divides your total area — including waste — by that number and rounds up to whole boxes.
Does this work for laminate and vinyl plank flooring?
Yes. Pick a plank size (or Custom) and enter the box coverage — the same area-plus-waste math applies to laminate, vinyl plank (LVP) and engineered wood.
Should I measure in feet?
Enter the room in feet and the tile/plank in inches (or use Custom). The calculator handles the conversion and gives you tiles and boxes to buy.