What Size Pillow Insert for an 18×18 Cover? Finding Fit

What Size Pillow Insert for an 18×18 Cover? Finding Fit

Just purchased a beautiful 18×18 pillow cover but unsure about the right insert size? Getting the perfect fit is important for achieving a plush and professional look for your throw pillows. Using the wrong size can result in a lumpy, misshapen cushion that does not fill out the cover correctly. In this blog post, we will guide you on selecting the ideal pillow insert size to complement your 18×18 pillow cover, ensuring a polished and stylish end result for your home decor.

Key Takeaways:

  • Choose an Insert with Larger Dimensions: Opt for a pillow insert that is a size larger than the cover, like a 20×20 insert for an 18×18 cover, to ensure a full and plush look.
  • Consider a Down-Filled Insert: Down-filled inserts are more malleable and can be easily fluffed up to fill out the corners of the cover, providing a luxurious and full appearance.
  • Adjustable Inserts: Look for inserts that have a zipper or are made of multiple pillow layers which can be adjusted to create the perfect fill for your 18×18 pillow cover.

finding the right pillow insert size - What Size Pillow Insert for an 18x18 Cover? Finding Fit

Understanding Pillow Measurements

Assuming you have an 18×18 pillow cover, you might wonder how to pick the right insert size. To tackle this dilemma, it’s crucial to understand the function of pillow measurements. If you are unsure about which size insert to choose, you can seek advice or suggestions from experienced users on platforms like Amazon Questions.

Determining Pillow Cover Dimensions

Pillow cover dimensions are typically the measurements of the fabric when laid flat and unstuffed. In the case of an 18×18 cover, it signifies the size of the cover when it’s not filled with an insert. To ensure a snug and full look, your insert should match the dimensions of your pillow cover.

The Role of Pillow Insert Sizes

Pillow insert sizes play a crucial role in determining the overall look and comfort of your pillows. Choosing the correct insert size will fill out the pillow cover properly, preventing any sagging or loose areas. Using an insert that is too small can result in a deflated appearance, while an insert that is too large might make the pillow look overstuffed and awkward. Opting for the right insert size ensures your pillows look plump and well-proportioned.

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Perfect Fit for an 18×18 Cover

The Ideal Pillow Insert Size for Comfort and Aesthetics

Comfort plays a crucial role in choosing the right pillow insert for your 18×18 cover. Opting for an insert that is slightly larger than the cover ensures a plump and luxurious look, providing both comfort and aesthetic appeal.

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Tips for Measuring and Choosing the Right Insert

On your quest to find the perfect pillow insert for your 18×18 cover, measuring accurately is key. Utilize a tape measure to determine the dimensions of your cover, then follow these tips:

  • Ensure the insert is at least 1 inch larger than the cover for a full and plush appearance.
  • Consider using a down or down-alternative insert for a soft and comfortable feel.

Choosing the right insert is crucial for achieving the ideal look and comfort. Measure carefully and select an insert that will provide the support and aesthetics you desire.

Pillow Insert Materials and Their Impact on Fit

Down and Feather Inserts

Many pillow insert materials can impact the fit of your pillow cover. Down and feather inserts are popular for their luxurious feel and ability to be molded to fit the cover well. The natural materials allow for easy manipulation, ensuring a snug fit inside your 18×18 cover.

Synthetic and Foam Inserts

With synthetic and foam inserts, the fit of your pillow cover may be slightly different. These materials are often firmer and less malleable than down and feather, so you may need to size up on your insert to fill out the cover properly. However, synthetic and foam inserts are great for those with allergies to natural materials.

Their firmness and bounce-back properties make synthetic and foam inserts a great choice for those who prefer a fuller pillow. They are also durable and retain their shape well over time, providing long-lasting support for your pillows.

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Maintenance and Longevity of Your Pillow Setup

How to Fluff and Adjust Inserts for Lasting Comfort

Lasting comfort starts with proper fluffing and adjusting of your pillow inserts. To maintain the plumpness and shape of your pillows, make it a habit to fluff and rotate the inserts regularly. Gently knead and squeeze the pillows to distribute the filling evenly. This simple step can help prevent lumps and ensure your pillows stay supportive and comfortable for longer.

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When to Replace Your Pillow Insert

Inserts, like everything else, have a shelf life. Knowing when to replace your pillow insert is crucial for maintaining the health of your sleep environment. If your pillows have lost their shape, support, or firmness, it’s time to replace the inserts. Avoid sleeping on worn-out pillows as they can lead to discomfort, improper spinal alignment, and poor sleep quality.

Your pillow inserts directly impact the quality of your sleep. It’s vital to invest in high-quality inserts and replace them as needed to ensure you have the best sleep experience possible. Be mindful of, a well-maintained pillow setup can contribute significantly to your overall well-being and comfort.

Final Words

Presently, knowing the right size pillow insert for an 18×18 cover is crucial to achieve that perfectly plump look. By selecting an insert that is slightly larger than the cover, you can ensure a fuller appearance without leaving any empty spaces. Pay attention to the fill power and material of the insert to maintain the desired shape and firmness. Be mindful of, the key to a well-fitting pillow is to prioritize the quality and fit of the insert for a polished and stylish finish to your decor.


Q: What size pillow insert should I use for an 18×18 cover?

A: To achieve the best fit, it is recommended to use a 20×20 pillow insert for an 18×18 cover. This will ensure a full and plump look, without leaving any empty corners or sagging areas.

Q: Can I use an 18×18 pillow insert for an 18×18 cover?

A: While it is possible to use an 18×18 pillow insert for an 18×18 cover, the fit may appear flatter and less filled out. It is always better to go up a size in the insert to achieve a more professional and polished look for your pillows.

Q: How do I measure the pillow insert for my cover?

A: To measure the pillow insert for your cover, simply take a measuring tape and measure from seam to seam on the pillow cover. Then, choose an insert that is 1-2 inches larger than the cover size to ensure a snug and full appearance once inserted.