About the Flooring Calculator
Enter the room size, a waste allowance and the coverage per box to find how much flooring to order, and optionally the cost.
Flooring Calculator formula
flooring = length × width × (1 + waste%)Flooring Calculator
Calculate how much flooring, timber, laminate or carpet to buy, including waste and boxes.
- Enter your numbers
- Results update as you type
- Copy the answer or share the link
Runs in your browser. Your data and files never leave your device.
Results are estimates. Allow for waste, local conditions and supplier guidance before you buy.
Frequently asked questions
How much extra flooring should I buy?
About 10% for a straight lay in a regular room, 15% or more for diagonal or herringbone patterns and rooms with lots of corners.
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