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Granny Square Crochet Blanket Cardigan – A Free Pattern

I’m so excited to share a free pattern with you today for a really easy, beginner friendly crochet blanket cardigan! This blanket cardigan has such a long story and history and I’m so happy it’s finally found its forever purpose.

This granny square cardigan started life as a humble granny blanket that I made years ago and have always struggled to know what to do with. I know that might seem crazy to say, I mean, it’s a blanket right?!

We used it as a blanket on the sofa for a while until we got the dog then it had to go away for its own safety! Then we used it at the end of our bed but then little people would pull it off every five minutes. So then it got stapled onto a canvas and hung above our bed as a piece of artwork (it looked so cool like that!) but when we moved it didn’t look quite right so I had to think again.

I wrapped it around my myself and the penny dropped – turn it into a cardigan!

The free pattern is here for everyone to enjoy and I’ve also added a link to the PDF to download for free too if you’d like it, just scroll down to find it.

More about the Granny Square Crochet Blanket Cardigan

It’s no secret that I love designing and making blankets. It’s my safe place and over the years I’ve designed more than I can remember and have loved seeing all the fabulous versions you have all made.

So I’m so excited to share this technique with you to transform any blanket you like into a cardigan, shrug type garment that is so easy to wear and will showcase all of that hard work you put into making the blanket in the first place!

The main thing I want to say here though is that I know this isn’t rocket science! I realise this isn’t ground breaking, new or any of those fabulous things and I wondered whether I should even share this or not but I really hope you enjoy this pattern and little tutorial and use it as inspiration to make something fabulous for yourself.

The best thing is that with just 2 simple seams, your blanket can become a garment and so absolutely anyone can achieve this!

Learn to crochet a granny square

So for this pattern, the first thing you need to learn or know how to do is to crochet a granny square. I’m sure most of you can do them blindfolded (I tried it once and it almost worked!), but if not I’ve put together a really simple step by step tutorial. It teaches you how to make a crochet square and also a tip to keep it straight and stop it from twisting.

Learn to crochet a granny square here.

four round crochet granny square motif

Other Stitches You Could Use to make a Crochet Blanket Cardigan

The blanket I chose to transform happened to be a granny square blanket and I’m over the moon with the granny square cardigan it became but there are so many other possibilities for using this technique!

So long as you make a blanket big enough to stretch over your arm span and reach from the nape of your neck to somewhere over your bottom then you can use any blanket you like. Here are some other stitch patterns that I think would work really well for a project like this:

  1. Oyster Shell Stitch – really soft drape to this one
  2. Granny Block Stitch – you could have great fun with colours here
  3. Simple Cable Stitch – so simple but so beautiful

Other Granny Square Patterns

Here are a few other granny square patterns you might like to try:

Yarn

My original blanket used Sublime Baby Cashmere Merino Silk which is the most beautiful yarn but does make the cardigan really expensive to make and some of the colours aren’t available anymore. (Find it here though if you fancy treating yourself!)

A great alternative (that I’ve colour matched as closely as I can) is Paintbox Yarns Simply DK which is really affordable and comes in so many beautiful colours too.

Another great idea is to raid your yarn stash! I bet we’ve all got enough yarn lurking in the house to make a blanket cardigan or two!

To make the blanket I used approximately 4oog of the main white colour and then about 50g each of 10 other colours as a guide.

Choose your own colours of yarn – Paintbox Simply DK

Find the pattern and yarn pack together here

woman in field wearing granny square blanket cardigan

Materials

Along with the yarn to make your crochet blanket cardigan you will also need:

A 4mm crochet hook

Needle – find one here if you don’t have one (US/worldwide) or find one here (UK)

Scissors – find some here if you don’t have any (US/worldwide) or find some here (UK)

Tension and Sizing

Each of my granny squares measures 9cm across but tension isn’t essential for this project.

One sizes fit most for this crochet project, and you adapt yours by adding or subtracting granny squares to make it how you’d like it.

As a guide though, my blanket measured 84cm by 132cm and is a really big, slouchy fit on me as a UK size 12 (ish!)/medium size person.

woman wearing granny square crochet cardigan

Glossary/Abbreviations

ch(s) – chain(s)

ss – slip stitch

sk – skip

st(s) – stitch (es)

RS – right side

WS – wrong side

rep – repeat

sp – space

beg – beginning

Stitches –

UK termsUS terms
dc – double crochetsc -single crochet
tr – treble crochetdc – double crochet

Notes

Turn your work after each round to make sure that the granny squares do not twist.

A ch2 at the beginning of a round does not count as a stitch.

Colour Combinations:

Use whatever colour combinations you like to create your granny squares. I used white for the final round of each and to join them too. No two squares in my version are the same but I’d love for you to have fun and experiment to make yours truly unique! 

woman in field throwing a granny square crochet blanket in the air

Pattern – UK Terms

Make 126 squares using the following pattern:

Make a magic ring.

Round 1: *3tr, ch2, rep from * three more times, ss in 1st to join. Turn work for next round.

Round 2: Join yarn to any ch2-corner, ch2, *(3tr, ch2, 3tr) in ch2-sp, ch1, rep from * three more times, ss in 1st to join. Turn work for next round.

Round 3: Join yarn to any ch2-corner, ch2, *(3tr, ch2, 3tr) in ch2-sp, ch1, 3tr in ch1-sp, ch1, rep from * three more times, ss in 1st to join. Turn work for next round.

Round 4: Join yarn to any ch2-corner, ch2, *(3tr, ch2, 3tr) in ch2-sp, ch1, (3tr in ch1-sp, ch1,) twice, rep from * three more times, ss in 1st to join. Turn work for next round.

To join the squares:

The granny squares are joined with a double crochet seam to the top of the throw to add some lovely texture – it also gives a lovely firm seam but you can weave, back stitch or slip stitch them if you like. 

To get the double crochet seam on the RS then arrange the squares in a random pattern of 14 x 9.

With WS facing each other, join White in an end ch3 corner sp, 1ch, 2dc in this space, 1dc in each other stitch and space along, 2dc in last 3ch corner sp. 

When working the other seam join in the same way but for the joint of 4 squares, 1ch to go over the top of the seam running in the opposite direction. 

Patterns – US Terms

Make 126 squares using the following pattern:

Make a magic ring.

Round 1: *3dc, ch2, rep from * three more times, ss in 1st to join. Turn work for next round.

Round 2: Join yarn to any ch2-corner, ch2, *(3dc, ch2, 3dc) in ch2-sp, ch1, rep from * three more times, ss in 1st to join. Turn work for next round.

Round 3: Join yarn to any ch2-corner, ch2, *(3dc, ch2, 3dc) in ch2-sp, ch1, 3dc in ch1-sp, ch1, rep from * three more times, ss in 1st to join. Turn work for next round.

Round 4: Join yarn to any ch2-corner, ch2, *(3dc, ch2, 3dc) in ch2-sp, ch1, (3dc in ch1-sp, ch1,) twice, rep from * three more times, ss in 1st to join. Turn work for next round.

To join the squares:

The granny squares are joined with a single crochet seam to the top of the throw to add some lovely texture – it also gives a lovely firm seam but you can weave, back stitch or slip stitch them if you like. 

To get the single crochet seam on the RS then arrange the squares in a random pattern of 14 x9. 

With WS facing each other, join White in an end ch3 corner sp, 1ch, 2sc in this space, 1sc in each other stitch and space along, 2sc in last 3ch corner sp. 

When working the other seam join in the same way but for the joint of 4 squares, 1ch to go over the top of the seam running in the opposite direction. 

cozy granny square cardigan

Creating the Seams and Finishing

Turn your blanket to WS facing and fold in half lengthways. Work a sc/dc seam along three granny squares on either of the short sides (leaving the middle 3 unworked for the armhole). You should have 14 granny squares along the top and bottom of the cardigan, 3 granny squares for each armhole and 6 granny squares seamed together each side to form the sleeves. 

seaming a granny square crochet blanket

Weave in all ends to finish. 

crochet blanket cardigan from a granny blanket

Download the Pattern PDF

I’d love for you to download the pattern for free and enjoy if you’d like to! Find it here:

Download the FREE pattern PDF here

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Looking forward to hearing from you and sending you your free gift!

Thank you so much for being here to share in my free crochet patterns and supporting my blog. It’s such an honour to be able to create and share my craft with you.

I’d love to see your finished crochet projects and so please share them with me in one (or all!) of the following ways –

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