Enlarge Your Comfort: How to Make a Comforter Bigger

Emma Jul 01, 2026

Ever found your comforter just a tad too small, leaving you shivering on cold winter nights? You're not alone. But don't rush to the store just yet. With a little DIY magic, you can make your comforter bigger and cozier. Let's dive into how to enlarge your comforter, step by step.

How to Make a Duvet Cover Larger | Dans le Lakehouse
How to Make a Duvet Cover Larger | Dans le Lakehouse

Before we start, remember that adding size to a comforter isn't as simple as sewing on extra fabric. You'll need to consider the filling, the weight, and the overall balance of your comforter. But don't worry, with the right techniques, you can achieve a perfectly sized, perfectly comfortable comforter.

How to Put a Comforter in a Duvet Cover
How to Put a Comforter in a Duvet Cover

Understanding Your Comforter

First, let's understand the components of your comforter. A typical comforter consists of two layers of fabric (the top and bottom) and a filling in between. The filling can be down, synthetic, or a blend, and it's what gives your comforter its warmth and fluffiness.

How to make your bed comfier ♡ bedroom makeover
How to make your bed comfier ♡ bedroom makeover

When you're adding size to your comforter, you'll need to consider both the fabric and the filling. Adding fabric without accounting for the filling can result in a lumpy, uneven comforter. Conversely, adding too much filling can make your comforter bulky and uncomfortable.

Measuring and Planning

Deconstructing a King Size Comforter
Deconstructing a King Size Comforter

Before you start, measure your comforter and decide how much bigger you want it to be. Remember to measure both the length and the width. Also, consider the size of your bed. A comforter that's too big can be impractical, while one that's too small won't provide the coverage you need.

Once you've decided on the new size, sketch out a plan. You'll need to add fabric to all four sides of your comforter. Decide how much fabric you'll need for each side, and whether you'll be adding it in one piece or in multiple strips.

Gathering Materials

How to Make a Duvet Cover Larger - Dans le Lakehouse
How to Make a Duvet Cover Larger - Dans le Lakehouse

You'll need several materials for this project. First, you'll need fabric. Choose a fabric that matches or complements your existing comforter. You'll also need thread that matches your fabric, scissors, a sewing machine, and, if you're adding a lot of size, extra filling.

If you're using a different fabric, you might need to pre-wash it to prevent shrinkage. Also, consider the weight of the new fabric. A heavier fabric can make your comforter bulkier, so you might need to adjust the amount of filling you use.

Adding Size to Your Comforter

there's the trick to get the full, fluffy duvet you've always wanted
there's the trick to get the full, fluffy duvet you've always wanted

Now that you've planned and gathered your materials, it's time to start sewing. Begin by cutting your fabric to the size you need. Remember to add seam allowances to your cuts. A typical seam allowance is about 1/2 inch, but you might need more depending on your comforter and your sewing machine.

Once you've cut your fabric, it's time to start sewing. Begin by sewing one side of your comforter. Place the new fabric right sides together with the existing fabric, and sew along the edge. Remember to leave the filling inside your comforter as you sew. This will help you maintain the shape and balance of your comforter.

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Sewing the Other Sides

After you've sewn one side, repeat the process for the other three sides. Make sure to match the seams as you go to ensure a smooth, even finish. If you're adding extra filling, do so now. Distribute the filling evenly across the new sections of your comforter.

If you're adding multiple strips of fabric, sew them on one at a time. Make sure to press your seams as you go to help maintain the shape of your comforter. Once you've sewn all four sides, try your comforter on your bed to make sure it fits correctly.

Finishing Touches

After you've sewn all four sides, it's time to finish your comforter. First, trim any excess threads or fabric. Then, press your seams one last time to ensure a smooth, even finish.

If you want, you can add a border to your comforter. This can help hide any unevenness in your seams and add a decorative touch to your bedding. Choose a fabric that matches or complements your comforter, and sew it on using the same technique you used to add size to your comforter.

And there you have it! With a little time and effort, you've transformed your too-small comforter into a cozy, perfectly sized bedding essential. Enjoy your new, bigger comforter, and sweet dreams!