Question 1

How much extra flooring should I buy for waste?

Accepted Answer

Add 5% for straight-laid rectangular rooms, 10% for diagonal patterns or rooms with lots of corners, and 15% for tile with intricate layouts or matching grout lines. Always round up to full boxes since opened boxes are hard to return.

Question 2

How do I calculate square feet for flooring?

Accepted Answer

Multiply the length by the width of each room in feet to get square feet, then sum every room and area. Subtract large built-ins, but keep the area under cabinets since flooring usually runs underneath.

Question 3

How many boxes of laminate or vinyl plank do I need?

Accepted Answer

Divide your total square footage (including waste) by the square-foot coverage printed on one box, then round up to the next whole box. A typical laminate box covers 18–24 sq ft, while vinyl plank boxes often cover 20–30 sq ft.

Question 4

Is my data stored?

Accepted Answer

No. Every calculation happens entirely in your browser. No room sizes, prices or measurements are ever sent to a server.