Flooring Calculator
Enter the room size and box coverage to see how much flooring to order and what the material will cost.
Results are estimates for planning only. Always confirm measurements, local codes and manufacturer specs before ordering materials or quoting a job. See our Terms.
How much flooring to order
Multiply length by width for each room, then add waste: about 10% for straight-lay plank and laminate, 15% for diagonal or herringbone layouts. Divide by the square feet per box printed on the carton and round up.
Order all boxes from the same production lot so colors match, and keep a spare box for future repairs.
Questions
How much extra flooring should I buy?
Add 10% for most plank and laminate installs, 15% for diagonal patterns, and more for rooms with many angles or closets.
How many square feet are in a box of flooring?
It varies by product, usually 18 to 25 sq ft for LVP and laminate. Check the box label and enter it in the calculator.
How do I measure an L-shaped room?
Split it into rectangles, calculate each one, and add them together.