As your local flooring experts, we're here to help take the guesswork out of measuring for your next flooring project. Accurate measurements are the foundation of a successful installation. Buy too little and you risk delays waiting for additional material that may not match your original dye lot. Buy too much and you're left with material you didn't need. Read on to explore what to do before you start measuring, how the process changes depending on your flooring type, and the most common mistakes that lead to ordering the wrong amount.
Taking a few minutes to set up before you measure makes the whole process faster and less prone to error.
For larger rooms or open floor plans, consider a laser distance measurer. It's more accurate over long distances and won't sag or shift mid-read the way a tape measure can.
Clear as much furniture from the space as you can. You want to capture the full floor area, not just the open sections. If the room has closets, alcoves, or spots that step in and out, include those too. Flooring runs into all of them.
Carpet calls for a different approach than hard surface flooring, and it's where most DIY measurements go wrong.
Carpet is manufactured on rolls, typically 12 feet wide. When a room is wider than that, an installer has to seam two pieces together. Where that seam lands matters. A seam placed in a high-traffic path or a highly visible spot will show more over time, and seam placement affects the total yardage you need, not just the square footage.
Carpet is also frequently sold by the square yard rather than the square foot. One square yard equals 9 square feet, so it's worth confirming which unit your quote is based on before you compare numbers.
For these reasons, a professional in-home measurement is strongly recommended for carpet. A trained installer can plan seam placement to minimize waste and get the best visual result, taking this step off your plate entirely.
Hard surface plank flooring, including hardwood, luxury vinyl plank, and laminate, is calculated in square feet plus a waste allowance. The basic process is the same as any room: length times width for each area, added together for the total.
The waste allowance is where the details matter. Standard installations typically call for 10% overage. Diagonal or herringbone patterns need more, often 15% or higher, since more material gets cut away at the edges and corners to achieve the look. If your room has an irregular shape or several offsets, plan for extra overage there too.
One thing to note for hardwood specifically: direction matters. Planks are usually run perpendicular to the joists for structural reasons, or along the longest dimension of the room for visual effect. That choice can affect how cuts fall and how much waste you generate at the walls, so it's worth talking through with your installer during planning.
Tile is measured the same way as hard surface planks: total square footage plus overage. The standard waste allowance for tile is 10%, though complex patterns or large-format tiles in smaller rooms may call for a bit more.
One variable that's unique to tile is grout line width. Grout lines take up physical space in the layout, and the width you choose affects how many tiles fit in a given span. This matters most when you're centering a layout on a feature wall, a fireplace, or another fixed reference point. If precise symmetry matters to the finished floor, work through the layout math with your installer before ordering.
Large-format tiles, typically 24 inches or larger, need a flatter subfloor than smaller tiles. It's worth assessing your subfloor for unevenness before you finalize your tile selection.
Measuring gets you a solid working number, but ordering is where precision counts. A fraction of an inch on a seam line or a missed alcove can mean the difference between a flawless install and a frustrating delay. That's why our experts offer in-home measurements as part of the process, bringing the tools and experience to plan seams, layouts, and waste allowances so you don't have to guess. Don't wait to reach out today to schedule yours and take the next confident step toward a floor you'll love for years to come.
Measure the length and width of each room at its longest and widest points, multiply to get square footage, then add a waste allowance. For most hard surface flooring, 10% overage is standard. For carpet, plan for more, especially if seams are involved. If you're measuring multiple rooms, calculate each one separately and add the totals together.
Use a tape measure long enough to span the room in one pass, 25 feet or longer for most residential spaces. Measure at the longest and widest points, wall to wall. Write down the measurements right away and sketch the room layout as you go. For rooms with closets, recesses, or irregular shapes, break the space into rectangular sections and measure each one separately. Measure twice before you record anything.
A 12x12 room is 144 square feet. With a standard 10% waste allowance for hard surface flooring, you'd plan for approximately 160 square feet of material. For carpet, the calculation depends on roll width and seam placement, so the actual amount needed may differ. Your flooring expert can confirm the right quantity once you know what product you're installing.
For most rooms, a standard tape measure and a simple sketch get the job done. Measure the length and width, write them down, and multiply. For larger or more complex spaces, a laser distance measurer is faster and more accurate than a tape. The most reliable approach for carpet is to have a professional measure the space, since seam placement decisions affect total yardage in ways a basic length-times-width calculation doesn't capture.
For flooring, the convention is length first, then width, written as length x width. Height isn't relevant to flooring calculations. Length is typically the longer of the two floor dimensions, though the labels matter less than consistency, as long as you multiply the two floor dimensions together, you get the right square footage. For rooms with unusual shapes, sketching and labeling each wall measurement as you go is more reliable than trying to keep track of which number is which.
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