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Thermal Stitch

Updated May 2, 2024

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Are you ready to learn one of the warmest crochet stitches around? Seriously, this stitch makes a wonderfully thick, sturdy fabric that’s perfect for projects that need a bit of extra OOMPH. If you’re looking for a way to add weight and warmth to a crochet project, you’ll love this Winter warmer. Perfect for making thick projects like potholders or sturdy bags and basket, it’s the coolest cold weather stitch you can learn. Ready to learn how to crochet the Thermal Stitch?







Yarn: I used MillaMia Naturally Soft Aran.

Hook: Hook to match yarn and your desired gauge. I used a 5mm.


Darning Needle


Written in UK terms

This pattern gives you the basic principles for the Thermal Stitch, designed to help you create your own projects.

The video tutorial can be found at the base of the post.


Chain (ch): Yarn over, pull through one loop on hook

Double Crochet (dc): Insert hook into stitch, yarn over, pull through two loops (2 loops on hook), yarn over, pull through both loops.

Slip Stitch (ss): Insert hook into stitch, yarn over, pull yarn through stitch and loop on hook

Stitch(es) (st(s))


STS– Starting thermal stitch. Insert hook into back loop only of next stitch PLUS the unworked chain on foundation chain. Yarn over hook, pull through two loops on hook. Yarn over hook and pull through remaining loops.

TS– Thermal Stitch. Insert hook into back loop only of next stitch PLUS the unworked stitch on the row below. Yarn over hook, pull through two loops on hook. Yarn over hook and pull through remaining loops.

CTS– Closing thermal Stitch. Insert hook into next stitch PLUS the unworked stitch on the row below. Yarn over hook, pull through two loops on hook. Yarn over hook and pull through remaining loops.

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A grey swatch of crocheted thermal stitch sits on a white background.


Chain to desired length plus 2

Row 1: Dc in back loop of 2nd ch from hook and across chain. Turn.

Row 2: Ch 1 (does not count as st here or throughout) STS in first st and across. Turn

Row 3: Ch 1, TS in first st and across

Repeat row 3 until you reach your desired height.

Final Row: Ch 1, CTS in first st and across.


Below you can find the left and right handed version of this tutorial. Don’t forget to subscribe to my channel

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  • Miranda
    November 21, 2020 at 6:08 am

    Can this stitch be worked into an infinity scarf?

    • BellaCocoTeam
      November 23, 2020 at 6:02 pm

      Hi Miranda Yes, you would just need to work one long rectangle before sewing it together

  • Anita
    February 22, 2021 at 4:13 pm

    What about the hdc with the Thermal stitch?

    • BellaCocoTeam
      February 23, 2021 at 9:15 am

      Hi Anita I’ve not tried that variation but you would just need to yarn over before inserting your hook into the stitches

  • Isabelle
    March 24, 2021 at 5:28 pm

    Could this stitch be used for a temperature blanket?

    • BellaCocoTeam
      March 29, 2021 at 6:14 pm

      Hi Isabelle You could, but I would make a small swatch first to make sure you’re happy with how it looks when it’s striped A great alternative would be moss stitch/linen stitch.

    • Kari
      December 28, 2021 at 11:57 pm

      Can thus stitch be done into a hat?

      • BellaCocoTeam
        January 6, 2022 at 11:36 am

        This is quite a dense stitch so it will be nice and warm for a hat, but it does work up quite stiff so that’s something to bear in mind

  • Jessica
    November 16, 2021 at 11:18 pm

    Love this stitch! How do you get such neat edges? I’m not sure which stitches to go in at the end of each row.

  • Christina
    January 20, 2022 at 4:42 pm

    What are recommended applications for this stitch?

    • BellaCocoTeam
      January 26, 2022 at 7:23 pm

      Hi Christina Thermal stitch gives a lovely dense, sturdy fabric that’s perfect for pot holders and bags, and other projects that require structure

  • Marilyn
    February 11, 2022 at 2:09 am

    I have been using this stitch with strips of nylon netting to make square scrubbies. I love them, they hold up so much better than the circular scrubbies you usually see. I also make the cotton pots holders.

  • Diane
    April 11, 2023 at 5:48 pm

    Is it possible to increase and decrease in the thermal stitch? If so, how?? thank you so much

    • BellaCocoTeam
      April 21, 2023 at 8:44 pm

      I would increase and decrease this stitch as you would a regular stitch by working two stitches into one to increase, and working two together to decrease (to work two together you should begin your stitch as normal, however, before yarning over and pulling through both loops on the hook to complete the stitch, you should insert you hook and begin the next stitch)


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