How to Turn a Comforter into a Duvet Insert

Emma Jul 01, 2026

Transforming a comforter into a duvet insert can be a rewarding DIY project, allowing you to customize your bedding while saving money. This guide will walk you through the process, from understanding the differences between comforters and duvets to creating your perfect duvet insert.

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

Before we dive in, let's clarify the terms. A comforter is a thick, quilted blanket typically filled with down, feathers, or synthetic materials. A duvet, on the other hand, is a lightweight, flat bag filled with down, feathers, or synthetic materials, designed to be used with a duvet cover for easy washing.

an unmade mattress is on the floor in front of a window with two arrows pointing to it
an unmade mattress is on the floor in front of a window with two arrows pointing to it

Understanding Duvets and Comforters

To create a successful duvet insert from your comforter, it's crucial to understand the differences between the two. Duvets are lighter and flatter than comforters, and they're designed to be used with a removable cover for easy cleaning. Comforters, while also filled with insulating materials, are typically thicker and heavier, and they're not meant to be removed from their covers.

The Best Fluffy Duvet Inserts: 7 Things to Look For (To Get a Fluffy, Hotel-Like Bed)!
The Best Fluffy Duvet Inserts: 7 Things to Look For (To Get a Fluffy, Hotel-Like Bed)!

By converting your comforter into a duvet insert, you'll gain the benefits of both worlds: the warmth and comfort of a comforter, with the easy cleaning and versatility of a duvet.

Materials Needed

How To Attach A Duvet Inside A Duvet Cover - Agnes Creates
How To Attach A Duvet Inside A Duvet Cover - Agnes Creates

Before you begin, gather the following materials:

  • Your comforter
  • A sewing machine with a universal needle
  • Thread that matches your comforter's color
  • Sewing scissors or a rotary cutter
  • Straight pins or a fabric marker

Measuring and Cutting

Easy Trick to Putting on a Duvet Cover - Lemons, Lavender, & Laundry
Easy Trick to Putting on a Duvet Cover - Lemons, Lavender, & Laundry

First, measure your comforter. Duvets typically come in standard sizes, so you'll want to cut your comforter to match these dimensions. For a queen-sized duvet, for example, you'll want to cut your comforter to approximately 90" x 90".

Using your measurements, cut your comforter in half lengthwise, creating two long rectangles. You'll only need one of these rectangles for your duvet insert, so you can use the other for a future project or discard it.

Sewing the Duvet Insert

an easy way to cover a duvet the easy way in less than 2 minutes
an easy way to cover a duvet the easy way in less than 2 minutes

Now that you have your comforter cut to size, it's time to sew it into a duvet insert. This process involves creating a flat, bag-like shape that can be slipped into a duvet cover.

Start by folding one of the long sides of your comforter rectangle inward, creating a hem that's about 1/4" to 1/2" wide. Use straight pins or a fabric marker to hold this hem in place.

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
a man and woman unpacking a mattress on the set of news
a man and woman unpacking a mattress on the set of news
a pink piece of paper that says make your own damn duvet
a pink piece of paper that says make your own damn duvet
how to keep duvet cover and comforter stay in place
how to keep duvet cover and comforter stay in place
a woman standing in front of a bed with her hands out and the words, add your duvet cover without breaking a sweat
a woman standing in front of a bed with her hands out and the words, add your duvet cover without breaking a sweat
Easy Duvet Cover Hack
Easy Duvet Cover Hack
Easiest Way to Insert a Duvet Cover Without Frustration
Easiest Way to Insert a Duvet Cover Without Frustration
How to Make a Duvet Cover Larger - Dans le Lakehouse
How to Make a Duvet Cover Larger - Dans le Lakehouse
How to Cover a Duvet in Under Two Minutes
How to Cover a Duvet in Under Two Minutes
how to make a duvet cover very easy with blue sheets and ruffles
how to make a duvet cover very easy with blue sheets and ruffles
Can You Put A Comforter, Quilt & Blanket In A Duvet Cover
Can You Put A Comforter, Quilt & Blanket In A Duvet Cover
7 Easy Steps to Put a Duvet Insert into a Duvet Cover - 21 Lane
7 Easy Steps to Put a Duvet Insert into a Duvet Cover - 21 Lane
the diy duvet cover from 2 flat sheets is easy to make and it's so cute
the diy duvet cover from 2 flat sheets is easy to make and it's so cute
How To Put A Duvet Cover On In Only 5 Minutes, It's So Easy!
How To Put A Duvet Cover On In Only 5 Minutes, It's So Easy!
There's a simple way to put on a duvet cover that takes less than 5 minutes
There's a simple way to put on a duvet cover that takes less than 5 minutes
How to Insert a Duvet the Easy Way
How to Insert a Duvet the Easy Way
How to easily put on a duvet cover
How to easily put on a duvet cover
How to Put on a Duvet Cover the Easy Way
How to Put on a Duvet Cover the Easy Way
How to Put On a Duvet Cover the Easy Way
How to Put On a Duvet Cover the Easy Way
How to Keep A Duvet Cover in Place with Fabric Tape
How to Keep A Duvet Cover in Place with Fabric Tape

Sewing the First Side

Using your sewing machine, sew along the edge of your hem, creating a straight line down the side of your comforter. This will create one side of your duvet insert.

Repeat this process on the other long side of your comforter. Once both sides are sewn, you should have a long, flat rectangle with two sewn sides and two open sides.

Sewing the Bottom

Next, fold one of the short sides of your comforter inward, creating another hem. This hem should be the same width as the ones you created on the long sides.

Sew along the edge of this hem, creating the bottom of your duvet insert. Be sure to leave the top of your comforter open, as this will be where you insert your duvet cover.

Finishing Touches

With the main sewing complete, it's time to add some finishing touches to your duvet insert. First, check the edges of your insert for any rough or uneven seams. Use your sewing machine to neaten these edges if necessary.

You can also add corner ties to your duvet insert at this stage. These ties help keep your duvet insert in place within your duvet cover. To create corner ties, cut four pieces of fabric into 2" x 6" strips. Fold each strip in half lengthwise, then sew along the open edge to create a tube. Insert one of these tubes into each corner of your duvet insert, sewing it in place. Leave the ends of the tubes hanging out of the corners for tying.

Now that your duvet insert is complete, it's time to enjoy the benefits of your hard work. Slip your new insert into a duvet cover, and you'll have a beautiful, custom-made bedding set that's easy to clean and maintain.