Room Size Calculator
Calculate your room's total square footage and how much flooring material to order, including waste overage.
About This Calculator
Accurate measurements are the foundation of any successful flooring project. Our room size calculator handles both standard rectangular rooms and L-shaped layouts. Simply enter your room dimensions and the calculator automatically adds a 10% overage for cuts and waste — the industry standard recommended by professional installers. This ensures you order enough material to complete your project without running short.
Frequently Asked Questions
How do I measure a room for flooring?
Use a tape measure to find the length and width of your room in feet. For irregular rooms, divide the space into rectangles, measure each section separately, then add them together. Always measure at the longest and widest points.
Why do I need 10% extra flooring?
The 10% overage accounts for cuts at walls and doorways, plank damage during installation, pattern matching waste, and having spare planks for future repairs. For diagonal patterns, increase this to 15%.
How do I calculate square footage for an L-shaped room?
Use our L-Shape option. Enter the dimensions of each rectangular section separately. The calculator adds both areas together and applies the waste overage to the total.
What if my room isn't a perfect rectangle?
Measure the longest length and widest width. This gives you slightly more material than needed, which is better than running short. For complex shapes, break the room into rectangles and calculate each separately.
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