Cotton vs. Polyester Thread: Which Should You Choose?

Which Thread Should You Choose?

If you've started shopping for sewing or quilting thread, you've probably noticed two choices appear over and over again:

Cotton and Polyester.

Naturally, the next question is:

"Which one is better?"

The answer might surprise you.

Neither one is better.

Each has strengths that make it the right choice for different projects.

Instead of asking which thread is best, ask which thread is best for what you're making.

Cotton Thread

Cotton thread is made from natural cotton fibers and has been trusted by quilters and sewists for generations.

It has a soft, matte finish that blends beautifully into cotton fabrics and produces a traditional quilted look.

Cotton thread is available in several thread weights, with 50 WT and 40 WT being two of the most popular choices for quilting and sewing, while 12 WT is often used for bold decorative stitching and hand quilting.

Cotton thread is a wonderful choice for:

• Quilting cotton fabrics
• Traditional quilts
• Heirloom projects
• Home décor
• Garment sewing
• Projects where a softer, natural appearance is desired

Many quilters enjoy the classic look and feel that cotton thread provides.

Polyester Thread

Polyester thread is made from durable synthetic fibers.

It is known for its strength, flexibility, and resistance to shrinking, stretching, and fading.

Like cotton thread, polyester is available in different weights designed for different purposes. 40 WT is a versatile choice for embroidery and everyday sewing, 60 WT works well for fine embroidery and lettering, and 80 WT is ideal for bobbin work, English paper piecing, appliqué, heirloom sewing, and other projects that require an ultra-fine thread.

Polyester thread is commonly used for:

• Everyday sewing
• Garments
• Bags and totes
• Children's clothing
• Utility projects
• Machine embroidery
• Projects that will be washed frequently

Its versatility makes it one of the most popular all-purpose threads available today.

Side-by-Side Comparison

Neither column is "better."

They're simply different tools for different jobs.

Which One Should You Choose?

As a simple rule of thumb:

Choose cotton thread when you want a classic quilting look with natural fibers.

Choose polyester thread when strength, durability, or versatility is your priority.

If you're making an everyday quilt that will be used and washed often, many quilters happily use polyester.

If you're creating a traditional heirloom quilt, many prefer cotton.

Both choices are perfectly correct.

Common Beginner Mistake

Many beginners believe they should use the same thread for every project.

In reality, experienced sewists often keep both cotton and polyester thread on hand.

They also learn that different thread weights within each fiber type are designed for different kinds of sewing.

Each serves a different purpose.

The more projects you complete, the more naturally you'll know which combination of fiber and thread weight fits your needs.

Quick Tips

• Cotton thread pairs beautifully with quilting cotton.
• Polyester works well with a wide variety of fabrics.
• Both cotton and polyester are available in multiple thread weights.
• Think about how the finished project will be used.
• Choose quality thread regardless of fiber type.
• Don't be afraid to try both and discover your personal preference.

Remember This

Cotton and polyester aren't competitors.

They're simply two excellent choices designed for different kinds of projects.

Start with your project...

Then choose the thread that best supports it.

Continue Learning

Now that you understand thread fibers, let's look at another important topic:

➡️ Understanding Thread Weights