Sewing Thread Size In Mm

Sewing Thread Size In Mm

When it comes⁢ to sewing, choosing the right thread ⁤for your project is crucial to ensure⁢ a beautiful ⁢and long-lasting result. One essential aspect to consider is the thread size, which is usually indicated in millimeters (mm). Understanding thread sizes can help you ‌select the appropriate thread for ​your specific ‍sewing needs.

Thread Sizes and​ Their Uses

Thread sizes are designated by a number followed by ⁤the letter ‘T.’ The number indicates the thickness of the thread, and the letter⁤ ‘T’⁣ stands for tex, which is ⁤the international⁢ unit for⁣ thread weight. The tex measurement establishes the grams required for 1,000 meters ⁤of thread. The smaller the‍ number, the finer the thread.

Here are some common thread sizes and their recommended ⁤uses:

  • Tex 8 to 30: These fine threads‌ are ​typically used for delicate fabrics like silk or chiffon, as well as for lightweight garments and intricate details.
  • Tex 30 ‌to 50: ⁤ These medium-weight threads​ are‌ suitable for general sewing and ‍can handle‍ various fabric types, including cotton,⁤ linen, and polyester.
  • Tex​ 50 to 80: These ⁢threads are thicker⁣ and stronger, making them perfect⁣ for​ heavyweight fabrics, denim, upholstery, and other projects that‍ require enhanced durability.

Choosing the ⁤Right Thread Size

The ideal thread size for your project depends on several factors,‌ including the fabric type, the desired strength, and the desired⁤ visual appearance‍ of the seams. Generally, it is recommended⁣ to select a thread size that‌ matches or is slightly finer than the fabric weight. This ensures that the ⁣thread won’t‍ overpower delicate fabrics ‌or create bulky seams on lightweight materials.

When stitching more robust fabrics, such as⁤ denim or leather, it⁤ is crucial to choose a thicker thread⁤ that can withstand the‌ strain. The thread should be able to complement the fabric’s strength, ensuring the seams ⁢stay intact even under stress.


Understanding sewing thread sizes in mm can be ⁣extremely beneficial when‍ it comes to picking the right thread for your sewing ​projects. By ​matching the⁣ thread size to the fabric ⁣weight​ and desired strength, you can achieve professional-looking results while ensuring ‍the durability‍ of your ⁣creations.

5 thoughts on “Sewing Thread Size In Mm

  1. Great info!
    Lisa Anderson: Very useful!

    Great tip! Knowing the right size of sewing thread can have a big impact on the quality of your sewing project!

  2. Definitely, no matter what your project is, having the right measurements will make the process easier and lead to better results.

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