The Perfect Fit: How to Choose the Right Comforter or Blanket Size for Your Mattress

When it comes to bedding, size matters—a lot. The wrong-sized comforter or blanket can leave your bed looking awkward, your toes feeling cold, or your mattress exposed. Yet, most people don’t think twice about the dimensions of their bedding beyond “Does it say Queen or King on the label?”

Here’s the thing: not all mattresses are created equal. With the growing popularity of deep-pocket mattresses and plush toppers, a one-size-fits-all approach to bedding just doesn’t cut it anymore. I’m super sensitive to texture and the weight of my comforters is important to me. So, I’m the weirdo standing in aisle at the store, trying to open the package without tearing it apart so that I can get a sense of how a comforter feels. But it wasn’t until recently that I got a new comforter back home only to realize that it looks like crap on my bed because it’s not quite wide enough to get that “draped” look that I like. That’s why I’m writing this one…

Let’s dig into how to choose the right length and width for your comforter or blanket based on your mattress size and depth, so your bed can look (and feel) as dreamy as possible.

Why Comforter and Blanket Size Matters

Your bedding isn’t just about aesthetics; it’s about functionality. A comforter that’s too small won’t provide adequate coverage, especially if you’re sharing the bed. On the flip side, a comforter that’s too big can drag on the floor and feel unnecessarily heavy. The goal is to find a size that provides just the right amount of overhang to cover your mattress and create a polished, cozy look. It’s not fashion OVER function. It’s fashion AND function.

Understanding Mattress Dimensions

Before we dive into the specifics, let’s get clear on mattress sizes and depths. Here’s a quick refresher:

Mattress Size	Standard Dimensions (Width x Length)	Common Depths (Height)
Twin	39” x 75”	8”–12” (Standard), 13”–17” (Deep)
Twin XL	39” x 80”	8”–12” (Standard), 13”–17” (Deep)
Full/Double	54” x 75”	8”–12” (Standard), 13”–17” (Deep)
Queen	60” x 80”	8”–12” (Standard), 13”–17” (Deep)

 

How to calculate the perfect size comforter

To find the right comforter or blanket size, you’ll need to account for the mattress’s width, length, and depth. Here’s a simple formula to guide you:

Width: Add the mattress width + twice the mattress depth (to cover both sides).

Length: Add the mattress length + mattress depth (to cover the foot of the bed).

For example, let’s say you have a Queen mattress that’s 60” wide, 80” long, and 15” deep. Here’s the math:

Width: 60” + (15” x 2) = 90”

Length: 80” + 15” = 95”

In this case, you’d want a comforter that’s at least 90” x 95” for proper coverage.

Comforter and Blanket Size Chart

To save you the math, here’s a handy chart with recommended comforter sizes based on your mattress dimensions:

Mattress Size	Standard Depth (8”–12”)	Deep Mattress (13”–17”)	Extra-Deep Mattress (18”+)
Twin	68” x 88”	72” x 92”	74” x 96”
Twin XL	68” x 92”	72” x 96”	74” x 100”
Full/Double	78” x 88”	82” x 92”	84” x 96”
Queen	90” x 90”	94” x 95”	96” x 100”
King	104” x 90”	108” x 95”	110” x 100”
California King	104” x 94”	108” x 98”	110” x 104”

 

What about blankets?

Blankets, unlike comforters, don’t always need to cover the entire mattress. They’re more flexible and often used as an accent layer. However, if you’re using a blanket for warmth, follow the same sizing rules as comforters to ensure proper coverage.

Tips for choosing the right bedding

1.     Measure Your Mattress: Don’t assume your mattress is standard size—measure the depth, especially if you’ve added a topper.

2.     Account for Personal Preferences: If you like extra overhang or share your bed with a partner who’s a blanket hog, size up.

3.     Check the Label: Bedding dimensions vary by brand, so always double-check the measurements before buying.

4.     Layer Strategically: Pair your comforter with a throw blanket for added warmth and style.

The perfectly sized comforter is worth the effort

Choosing the right size comforter or blanket may seem like a small detail, but it has a big impact on your sleep quality and the overall look of your bedroom. A well-fitted comforter not only keeps you cozy but also elevates your space, making your bed the centerpiece it deserves to be.