Room Rug Size Calculator: Best Sizes to Use for Any Room

Pick the perfect rug size for your living room, bedroom, or bathroom with this easy-to-use free calculator. Just enter your room dimensions and preferred furniture arrangement, and click ‘calculate rug size’ to get the results.

How The Rug Size Calculator Works

Before purchasing the rug you’ve found online, it’s important that it works for your space to avoid the hassle of sending the wrong size back. That’s where this calculator comes in.

The Basics – Pick your room type: living room, bedroom, or bathroom. Then add your room’s measurements. The calculator determines the rug sizes that’ll fit best in your space. It’s not just random numbers, either; the recommendations are based on actual interior design rules.

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Living Room – Here’s the thing about living room rugs: their placement matters way more than most people think. That’s why we have the tool ask about your furniture arrangement. Some might want a design with all your furniture sitting on the rug, while others just want the front legs. If it’s all on top, you go for a larger size, and if it’s just the front legs, you go with a smaller option. If you decide to float it in the middle, you’ll want to go even smaller. Each style has a totally different look, and the wrong size can throw off your whole room. 

Bedroom – Bedrooms can be tricky because beds take up a lot of space, and you may not need a rug under the entire thing. The calculator asks about your bed size and where you want the rug. When choosing, there’s no “wrong” answer here. It’s about what feels right when you’re stepping out of bed in the morning.

Bathroom – Bathrooms are the easiest to deal with because you’ve got a small space, and simple math. But you’d be surprised how many people buy bathroom rugs that are either way too big or comically tiny for their needs. Our tool gives a good general guideline to follow so you’re not stuck with one that doesn’t look right.

Tips for Getting the Best Results

• Measure twice, and calculate once. Before doing anything, grab a tape measure and get real numbers, including the room length and width. Write them down.
• Leave some breathing room. The calculator already factors this in, but here’s why it matters: you want to see some floor. Like, 12 to 18 inches around the edges in a living room. It helps to frame the space and makes everything look intentional.
• Think about your furniture arrangement first. Don’t just measure your room and call it a day. Consider where your sofa is going, or your bed, depending on your needs. Because a rug that works for one layout might look out of place in another.
• The front-legs rule is your friend. In living rooms, having just the front legs of your furniture on the rug is like the go-to option. It’s also the most popular choice for a reason; it works in most spaces and doesn’t have you spending all of your money on a massive rug.
• Round up, not down. When you’re between sizes, go bigger. It’ll bug you every single day if your rug size is too small.
• Check standard sizes. The calculator gives you ideal measurements, but rugs come in standard sizes like 5×8, 8×10, etc. You might need to go up to the next standard size when shopping, which is normal and built into the recommendations.
• Measure how your doors open before committing to a rug. This goes especially for the bathroom, as there’s nothing worse than a gorgeous rug that blocks your door.
• Switch between feet and meters and use whatever measurement system you actually think in. The toggle at the top switches everything for you. If you’re in the U.S., stick with feet. 

One Last Thing – This rug calculator tool is for entertainment purposes only; make sure to do your due diligence before buying a product. Use your own judgment as well when it comes to sizing. If the recommendation feels off for your specific situation, adjust it. You live there, and not some formula. That said? The formula’s pretty solid, and is based on what actually works in real rooms, not what looks good in a magazine photoshoot where they removed three walls for the right camera angle.