Celtic Heart Square

Celtic Heart Square crocheted with dark pink, light pink and white yarn and made with a simple celtic knot heart in the center  - square is laying on a white wooden background

Celtic Heart Square

The Celtic Heart Square is a unique crochet square that uses simple stitches and easy knot weaving techniques.  I originally created this square to be part of a scarf design but as I finished the square I realized I didn’t want to use it in a scarf project and created 2 other scarf designs instead using the Celtic Knot Heart in a different way (You can see those FREE crochet patterns, the Velvet Celtic Heart Scarf and the Celtic Heart Scarf, on these blog posts here and here). 

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Celtic Knot Heart

But since my Celtic Knot square designs (Celtic Knot Square, Celtic Woven Square and Celtic Blanket Square) have been very popular (especially with the Moogly Crochet-A-Long), I thought others might like the pattern for this one so they could make one, too! This Celtic Heart Square could become a wide variety of projects. If you crocheted it with cotton yarn and added a cotton fabric backing, it would make a nice hot pad. You could make 2 of these squares and sew them together for a cute little crossbody bag – just make sure to line it first. This square could also be the center of a baby blanket or be appliqued onto a store-bought reusable shopping bag. So many possibilities! Crochet squares are fun to make!

Stitches Used in the Celtic Heart Square

For the Celtic Heart Square I used mostly basic crochet stitches. To make this project you will need to know how to do these stitches: chain, single crochet, slip stitch, half double crochet, double crochet and treble crochet. I have written definitions of each of these stitches below and have included photos of each round of the square so you can see how it all comes together.

Easy Knot-Weaving Technique

The Celtic Knot Heart motif in the center of this square is quite easy to make. First you will make a long cord out of half double crochet and slip stitches. Then using the clear life-size Celtic Knot Diagram I provide in the supply list (for free!), you will weave the cord into the knot design. If you need help weaving the knot, I have a video tutorial for you right here – check it out, you’ll see it is much easier than it looks!

Skill Level: Easy

(Easy means that you are beyond beginner and have mastered all of the basic crochet stitches. It also means that you have done some other stitch patterns beyond the basics)

Measurements for the Celtic Heart Square:

Completed square = 7 1/2″ wide x 7 1/2″ tall

Celtic Knot Heart = 5″ wide x 4 3/4″ tall

Supplies used for the crochet square showing dark pink yarn, green crochet hook, stitch markers and tapestry needle with completed cord

Supplies for the Celtic Heart Square:

Click on the supply name to purchase

(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)

Big Twist Value yarn by Joann’s – 1 skein each color: Plum (dark pink); Orchid (light purple); White

5.5 mm hook (I)

4 stitch markers

Jumbo Tapestry Needle

Print out of Celtic Knot Heart Diagram (download here for Right-Handed version)

**Download here for Left-Handed version**

6” x 6” square of ¼” thick corkboard

20 straight sewing pins

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Special Stitches and Abbreviations

Back bar of Chain = When looking at the right side of a chain, you see many “V’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 this technique

Hdc (half double crochet) = YO, insert hook into stitch; YO, draw up a loop; YO, pull through all 3 loops on hook

Sl st (slip stitch) = Insert hook into stitch, YO, pull through stitch and loop on hook

Back Loop Only = Insert hk only into the back lp at the top of the stitch

Click here to watch a short video tutorial of this technique

Sc (single crochet) = Insert hook into stitch, YO, draw up a loop; YO, pull through 2 loops on hook

Join with sc (join with single crochet) = With slip knot on hook, insert hook into stitch; YO, draw up a loop; YO, pull through 2 loops on hook

Click here to watch a short video tutorial on this technique

Join with dc (join with double crochet) = With slip knot on hook, YO, insert hook into stitch; YO, draw up a loop, (YO, pull through 2 loops on hook) twice

Click here to watch a short video tutorial on this technique

Join with hdc (join with half double crochet) = With slip knot on hook, YO, insert hook into stitch; YO, draw up a loop, YO, pull through all 3 loops on hook

Click here to watch a short video tutorial on this technique

Dc (double crochet) = YO, insert hook into stitch, YO, draw up a loop, (YO, pull through 2 loops on hook) twice

Tr (treble crochet) = YO twice, insert hk into st, YO, draw up a lp, (YO, pull through 2 lps on hk) 3 times

YO (yarn over)

Hk (hook)

Lp (loop)

Ch (chain)

St (stitch)

Sp (space)


First a long cord is crocheted and then woven into the Celtic Knot Heart

Then crochet stitches are worked into the outside edge of the woven heart to create the square shape

Completed dark pink and light pink cord for the Celtic Heart Square on a white wooden background

Instructions for the Celtic Heart Square:

Special stitches are written in bold and italicized text and defined above


Approximate cord length with edging = 30 1/2″

With Plum ch 122

Working in the back bar of the chain, hdc in 3rd ch from hk and in each ch across. Fasten off.


With contrasting color (Orchid) join with sl st in back loop only of 1st st of cord (this is the end of the cord without yarn tails); continuing to work in the back loop only, sl st in each st across; ch 1, sl st in side of last hdc of cord; ch 1; Now working on other side of cord and still working in the back loop only, sl st in each st across. Fasten off with long tail for assembly.

All the weaving supplies for the celtic square showing diagram, cord, corkboard and pins

Weaving the Celtic Heart

Place printout of Celtic Knot Heart diagram on corkboard and hold in place with pins

(Download the Right-Hander Diagram here; Left-Hander Diagram here)

**Make sure to use the diagram that goes with your dominate hand – it won’t actually matter much for weaving the knot but it will matter for how you do the stitching around the woven heart**

Step 1 in weaving the Celtic Knot

With Right Side of cord facing lay cord along path in diagram by first placing the beginning of the cord (where there are only the edging yarn tails) on black asterisk

Step 2 in weaving the Celtic Knot

Follow arrows along the cord path making sure to correctly pass over or under other sections of the cord – see photos to help

STep 3  in weaving the knot

Remove all pins and pin across at beginning and end of cord

The completed Celtic Heart Knot for the Celtic Heart Square

Remove heart from board and sew cord ends in place with tapestry needle and yarn tails

Close up photo showing how to sew the cord ends together

Weave in all ends on Wrong Side of heart while sewing some crossings (we will sew the remainder of the crossings after the square is completed – it is important to wait to sew some of the crossings so that we can adjust the cord placement while we add the crochet stitches around the outside of the heart)

Edging Around the Celtic Knot Heart:

**To help with this stage of the project please refer to the Celtic Knot diagram – the diagram includes some important info about how to do the first round of the edging and where to place all of the chain spaces**

**First you will add several chain spaces around the woven Celtic Heart – make sure your number of spaces is the same as in the diagram – you may need to sk a different number of sts than what is written in the pattern below to fit in the correct number of spaces**

Round 1 of the edging around the Celtic Heart Knot

Round 1:

Close up photo showing where to insert hook for edging

With Orchid and working in the back bump of the stitch (this is the loop behind the sl st edging – see photo above), join with sl st to top center of heart (at dark black line); (ch 4, sk each of next 2 sts, sl st in next st) 6 times; ch 6, sk turn in cord at A; sl st just beyond A (see diagram); ch 4, sk each of next 2 sts, sl st in next st; ch 3, sk next st; sl st in next st; ch 4 (around Bottom Point – B), sk next st, sl st in next st; ch 3, sk next st, sl st in next st; ch 4, sk each of next 2 sts; sl st in next st, ch 6, sk turn in cord at C; sl st just beyond C; (ch 4, sk each of next 2 sts (or more in order to make a total of 6 ch-sps along the remaining section of the heart), sl st in next st) 6 times; Fasten off.

**Next you will add a partial round to only the bottom half of the heart to help create a good square shape**

Bottom piece of Celtic Heart Square shown with green crochet hook on a white wooden background

Bottom Edging Piece:

With Orchid Join with sc in ch-6 sp at A; ch 2, (dc, ch 1, tr) in next ch-4 sp; ch 1, dc in next sl st, ch 1, dc in next ch-3 sp; ch 2, sc in next ch-4 sp (Now at bottom point); ch 2, dc in next ch-3 sp, ch 1, dc in next sl st, ch 1, (tr, ch 1, dc) in next ch-4 sp; ch 2, sc in next ch-6 sp. Fasten off.

Round 2 of the edging

Round 2:

(Since there are several steps to this round, each step is written on a line to help you keep your place)

With Orchid Join with dc in 1st ch-2 sp of Bottom Edging Piece; dc in same sp, ch 1;

2 dc in next sp, ch 1;

2 tr in next tr, ch 1 – Mark these 2 trs with a stitch marker

[2 dc in next ch-sp, ch 1] 6 times;

2 tr in next tr, ch 1 – Mark these 2 trs with a stitch marker

[2 dc in next ch-sp, ch 1] 3 times;

Sc in next ch-sp, ch1;

[2 sc in next ch-sp, ch 1] 2 times;

2 tr in next sl st, ch 1- Mark these 2 trs with a stitch marker

[2 dc in next ch-sp, ch 1] 6 times;

2 tr in next sl st, ch 1 – Mark these 2 trs with a stitch marker

2 sc in next ch-sp, ch 2;

2 sc in next ch-sp, ch 1;

Sc in next ch-sp, ch 1;

2 dc in last ch-sp, ch 1;

Sl st in 1st dc of round. Fasten off.

Round 3 of the edging completed

Round 3: 

Mark each ch-1 sp with a stitch marker

With Plum (cord main color) join with hdc in 1st tr of any corner; hdc in same st, ch 1; 2 hdc in next tr; [hdc in each st and each ch-sp across to next corner; 2 hdc in 1st tr at next corner, ch 1, 2 hdc in next tr at same corner] around making sure to work 2 hdc in any ch-2 sp; join with sl st to 1st hdc. Fasten off. (23 hdcs along each side of square with a ch-1 sp at each corner)

Round 4: 

With White join with hdc in any ch-1 sp at any corner; (ch 1, hdc) in same ch-1 sp; hdc in each st around working (hdc, ch 1, hdc) in ch-1 sp at each corner marked with a stitch marker; join with sl st to 1st hdc. Fasten off.

Finishing of the Celtic Heart Square:

Weave in all ends

Sew all remaining crossings on Wrong Side of Celtic Knot Heart using yarn tails

Optional: Wet block square

How to Wet Block:

Wet entire square with cold water so soaked through

Press out excess water with a clean towel (I like to roll my project in the towel and squeeze down the roll to get the excess water out)

Lay out square on dry towel and flat surface pulling out stitches and Celtic Knot so everything lays flat and evenly;  Let dry completely – you may want to use pins and a blocking board to help the square keep its shape nicely

Celtic Heart Square completed with a pink rose in a small vase in background on a white wooden surface

Your Celtic Heart Square is Complete!

Your Celtic Heart Square is complete! I hope you enjoyed making this project. Which colors did you choose? Let me know in the comments below. Since this is a lacy square, I think it would be best if you added a backing to it with fabric. Felt or fleece would work well or a cotton-blend. If you made this project, please send along a photo – I would love to see your creation!

And if you would like to see more crochet heart patterns, then check out these posts here.

Remember, all of my FREE crochet patterns are here and my Celtic Knot crochet projects are here.

Thank you for stopping by! Happy crocheting!


Copyright – Jennifer E Ryan- www.celticknotcrochet.com- 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.

46 thoughts on “Celtic Heart Square

  1. How would I turn the square into a rectangle for a placemat? Is that something that can be done with this pattern?

    1. Hi – Yes, you can turn this square into a rectangle by adding an equal number of rows on the right and left sides to add about 3-4″. Then you can work in the round around the entire new shape until you get the rectangle size you like. Does this make sense? Thank you for visiting! 🙂

  2. I just recently found your amazing blog! I LOVE LOVE the beauty of crocheting the Celtic knots! To date I’ve made a double sided heart keychain and a lovely Celtic knot bag! Thank you so much for sharing your fabulous patterns!

    1. Wonderful! You are welcome! So glad to hear that you love the Celtic Knots, too. Please send along a photo of your finished projects – would love to see them 🙂

  3. I have a tiny bit of Irish heritage in me but have always loved the Celtic Knot and love seeing your creations. I will be making this one for sure. Look forward to seeing what you come up with next!

  4. I love this pattern and the color scheme used. I would use it to for a throw pillow or possibly an applique on a sweater. I’m so happy that I recently found your blog!

    1. Yay! So glad you found it, too – thank you for becoming a subscriber. I like your pillow and applique idea 🙂

  5. I would love to do squares in blue and squares in green then make a lap blanket with a beach theme to replicate the coasts of Ireland

  6. This pattern is just gorgeous! The colours are beautiful, but I think I would make the rim around the heart in plum, rather than the orchid, just to make the heart stand out more. Any colour would suit this pattern too! So many options.

  7. The pattern is beautiful, but overwhelming to me. I plan to work my way up to doing it. Thanks for sharing the pattern and your knowledge of crochet.

    1. You are welcome! Good idea to take your time – there are several beginner Celtic knot projects on the blog. 🙂

  8. This is really a great looking pattern. I an teaching my grandson “granny squares” & this will be a great one to put in his collection. His new step dad is into Celtic designs. If he can work this, he will have a gift for new dad. He also has a new half sibling coming.

  9. What a lovely colourful versatile square. Can see so many possibilities using it. A lovely valentines gift is just scratching the surface. Thank you for sharing.

  10. This is such a pretty pattern. I can see it made in all kinds of color schemes, like oranges, greens, purples… love it! Thank you for sharing!

  11. This is so pretty, I have many ideas where i would use this square in…like dishtowel, pillow, tote bag was a great idea I seen on another comment. Thanks again for another great design

  12. I printed and net project this with all different colors of square to pass many yarn in boxes lol, it will be a king size and could probably make ten of them

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