Flooring Calculator

Work out how many boxes of flooring you need for a room, with waste.

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Flooring Calculator: The Complete Guide

Work out how much flooring to buy. Enter your room dimensions and the coverage printed on the flooring box, set a waste allowance, and get the number of boxes needed.

Who the Flooring Calculator is for

DIYers installing laminate, hardwood, or vinyl who need a box count with waste.

How to use the Flooring Calculator

  1. Type your values into the fields above — pick your currency or units where the calculator offers them.
  2. Results update automatically as you type; there's no submit button and nothing is sent to a server.
  3. Adjust any input to compare scenarios, then copy the result with a single click.

How it works

Boxes = room area × (1 + waste %) ÷ coverage per box. The room area and box coverage are used in the same units.

Features

  • Boxes incl. waste
  • Any box coverage
  • Imperial or metric
  • Floor area shown

Ordering flooring

Flooring is sold by the box, each covering a set area printed on the label. Divide your room area by that coverage, then add a waste allowance — about 10% for straight layouts, more for diagonal or herringbone patterns. Buying from one batch keeps the colour and finish consistent.

Frequently Asked Questions

How much extra flooring should I buy?

Around 10% for a standard layout, and 15% or more for diagonal or herringbone patterns, plus a spare box for future repairs.

Where do I find the coverage per box?

It's printed on the flooring packaging, usually in square feet or square metres. Enter that figure into the calculator.

Is this calculator free and private?

Yes. It's completely free with no signup, and every calculation runs locally in your browser, so your numbers never leave your device.

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