Crochet Mug Cozy

Crochet Mug Cozy with a green Celtic Knot on it shown wrapped around a white mug of coffee

Crochet Mug Cozy – Easy and Celtic!

Today I have a free crochet mug cozy pattern for you. It’s easy and quick! A crochet mug cozy helps protect your hands when holding a hot drink and it can help keep your drink warm. This cozy pattern includes buttons so it is simple to take on and off and use with a variety of mugs.

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Celtic Knot Decoration

The highlight of this mug cozy is the decorative Celtic Knot – you can add one or two to your cozy base – both options are shown below! I love how the Celtic Knot looks in the shades of green up against the lavender-colored base. The knot is easy to make especially with the diagram I include with the instructions below! (And now there is a Left-Hander version of this diagram available, too!)

To make this project you will need to know basic crochet stitches such as the single crochet, double crochet and half double crochet.

Crochet Mug Cozy Pattern PDF:

If you would like to purchase an ad-free printable version of this pattern, you can do that here in my Etsy Shop – the pattern will be digital and instantly available to download to your device.

Graphic of crochet mug cozy pattern pdf

Thank you for your support! πŸ™‚

Skill Level: Easy

Supplies for the mug cozy - yarn and crochet hook

Supplies for the Crochet Mug Cozy:

Click on the links below to purchase each supply

(Please note this post contains affiliate links which earns this blog a small commission at no extra cost to you – it’s a win-win! Thank you for your support so I can continue to offer free patterns like this one πŸ™‚)

Crochet Supplies:

3 skeins Size 3 (DK weight) or a thin Size 4 yarn – Pick 2 colors that look great together and help to highlight each part of the knot and one more color that would frame the knot well (for the mug cozy base)

(I used Yarn Bee yarns: Baby Bee Stork Struck in “Sugarplum” (light purple) and “Mint Charm” (light green); Yarn Bee Fundamental Cotton “Green” (darker green for cord edging))

Measuring Tape ( by Clover)


F/3.75mm crochet hook  ( by Clover)

2 buttons (5/8” diameter)

Jumbo Tapestry needle ( by Clover)

Supplies for weaving the Celtic Knot

Knot Weaving Supplies:

Corkboard or foam core board (1/4” thick and about 5” square)

Print-out of Knot Diagram (see below to download)

Flower Pins by Clover

Download the Diagram Here:

Graphic for diagram pdf

Special Diagram Update!

Now you can download a free diagram for Left-Handers – the pattern and stitches are the same but Left-Handers will need to weave the knot in the opposite direction – This special Left-Hander Diagram will guide you – no need to try to flip it around in your head! πŸ™‚

Click the image below to get the Diagram for Left-Handers:

Graphic for Left Hander diagram

Finished Measurements of this Crochet Mug Cozy: 

Mug Cozy base = 10 ½” long x 3 ½” wide

Celtic Knot = 3 ¾” long x 2 ¾” wide

Mugs come in a wide variety of sizes so you’ll want to measure the circumference of your mug and then subtract one inch – this is the length you want for your cozy base


Gauge is not necessary for this project as long as you make the cords the length stated in the pattern


Ch (chain)

Sc (single crochet)

Sl st (slip stitch)

Dc (double crochet)

YO (yarn over)

Lp (loop)

Sp (space)


Sk  (skip)

Special Stitches:

Back bar of the Chain = When looking at the right side of a chain, you see many β€œV’s” and the chain looks like a braid. Turn the chain over and you see a series of bumps – it is in these bumps that you will work across the chain to produce a cord with even edges along both sides

Click here to watch a short video tutorial on my Youtube Channel about this technique

Back Loop Only = Insert hook into back loop of each stitch

Click here to watch a short video tutorial on my Youtube Channel about this technique

Hdc2tog (half double crochet 2 together) = YO, insert hk into next st; YO, draw up a lp; YO, insert hk into next st; YO, draw up a lp; YO, pull through all 5 lps on hk

Notes for the Mug Cozy Pattern:

First the cozy base is crocheted and the closure is attached

Next 2 cords are made and then these 2 cords are woven into the Celtic Knots

Lastly the knots are sewn to the base

The stitch pattern for the base (sc, 2 dc) creates a β€˜shell’

**You can purchase an instant downloadable ad-free PDF of the project here in my Etsy shop**

Crochet Mug Cozy laid out flat - light purple rectangle with green Celtic Knots on top and buttons

In these photos you can see the edging around the base, where the closure loops and buttons are placed and how to pin the knots after you have woven them – These photos also show where you can place the knots

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Graphic with crochet photos and invitation to join mailing list

Instructions for the Crochet Mug Cozy:

All special stitches are written in bold and italicized text and defined above

Cozy Base:

Ch 18 loosely

Row 1:  Working in the back bar of the chain, 2 dc in 3rd ch from hk; [sk next 2 chs; (sc, 2 dc) in the next ch] across up to last 3 chs; sk next 2 chs, sc in last ch. Turn. (5 shells)

Row 1 of cozy base

Here is a photo of Row 1

Row 2:  Ch 1, 2 dc in 1st sc; [sk next 2 dcs; (sc, 2 dc) in next sc] across; sc in turning ch. Turn. (5 shells)

Row 2 of cozy base

Here is a photo of Row 2 worked in a different color so you can see how the stitches are worked into each other

Repeat Row 2 until piece measures 1 inch shorter than mug circumference – Do not fasten off.

Completed mug cozy base rectangle in light purple


Ch 1, work sc evenly down side of rows and along short edges around entire rectangle of base making sure to work 2 sc in each corner – end with sl st in 1st sc of edging. Fasten off with long tail for assembly.

Closure Loops:

Ch 17

Sl st in first ch to form ring – set aside to attach during Finishing/Assembly

Cord completed without edging

Cord – Make 2:

(Approximately 20 ½” long; ¾” wide with edging)

With light green ch 88

Working in the back bar of the chain, hdc in 3rd ch from hk and in each of the next 3 chs;

2 hdc in the next ch;

Hdc in each of the next 15 chs;

(Hdc2tog over the next 2 chs) 3 times;

Hdc in each of the next 7 chs;

(Hdc2tog over the next 2 chs) 2 times;

Hdc in each of the next 11 chs;

(Hdc2tog over the next 2 chs) 3 times;

Hdc in each of the next 11 chs;

2 hdc in the next ch;

Hdc in each of the next 10 chs;

2 hdc in each of the next 2 chs;

Hdc in each of the next 8 chs.

Fasten off.

Cord completed with dark green edging


With darker green sl st in the back loop only of each st along both sides of the cord

Weaving Celtic Knot

1: Print out Celtic Knot Diagram and pin to corkboard (see photo above Knot Weaving Supplies)

Step one of weaving Celtic Knot

2:  Pin beginning end of cord to red asterisk/star on diagram

Step 2 of weaving Celtic Knot

3:  Following the arrows lay cord along the green path on diagram pinning as you go and making sure to correctly pass either over or under the cord

Step 3 of weaving Celtic Knot
Completed Knot using diagram

4:  Pin all crossings and remove knot from corkboard (Photo 1 in collage below)

5: With tapestry needle and matching yarn sew cord ends together and all crossings making sure stitching does not show on Right Side (Photo 2 in collage below)

Collage of photos showing various steps of finishing the crochet mug cozy project


With tapestry needle and yarn tails sew closure loops onto the Wrong Side and one short end of base (Photo 4 above)

In same manner sew buttons on to other end of base on Right Side and making sure to line up with loop placement (See 4th photo of this blog post – just under the “Notes” section)

Lay cozy base flat on work surface and pin Celtic Knot pieces in place (See 4th photo again for placement)

Using yarn tails (of lighter color) and tapestry needle sew Celtic Knot embellishments to base along edging (sewing between top of cord stitches and bottom edge of sl st edging) (As shown in Photo 3 of collage above)

Crochet Mug Cozy completed on a mug of coffee with spoon and Celtic Knot

Tada! Your Celtic Mug Cozy is complete 😊 I hope you enjoyed making this crochet mug cozy pattern. I think this would make a unique and pretty gift for a friend who loves to drink coffee or tea. When it’s cold outside, I love to put a cozy on a mug of hot cocoa and sip away by the fire. If you have any questions about this project, please leave a comment below – I am happy to help and your question could help others, too!

You can find all of my Celtic Knot projects here and all of my FREE patterns here.

Don’t forget to pin the image below so you remember where you found this pattern!

Thank you for visiting – Happy crocheting!


Long image for pinterest board of this crochet mug cozy project showing a white mug covered with cozy on a white wooden background with flowers and crochet tools near by

Copyright – Jennifer E Ryan- all rights reserved. No part of this publication may be reproduced, distributed or transmitted in any form or by any means, including photocopying, recording or other electronic or mechanical methods, without the prior written permission of the publisher but please do link to this page to share this pattern with others.

If you wish to make items for sale from this pattern, please see our About page for details.

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