How to crochet a triangle

Triangles are a quick and easy shape to crochet, so we’re going to show you how to crochet a triangle in two different ways!

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Published: June 9, 2021 at 9:00 am

Whether you fancy making some quick bunting or are planning on hooking up an angular patchwork blanket, understanding how to crochet a triangle is a fun introduction to the world of crochet geometry.

If you’re new to crochet, you may find our post on how to increase in crochet stitches a useful companion to this post.

Making a crochet triangle is actually surprisingly easy, as unlike many other shapes where you would need to work in the round, triangles can be made in rows with simple increase stitches. In this tutorial we’re going to focus on making an equilateral triangle (where all 3 angles are the same), as these are the easiest and perhaps most useful type of crocheted triangle.

Crochet triangles are generally made by doing an increase stitch (working two stitches into one stitch) at the end of alternate rows. It’s worth noting that if you try increasing stitches at both ends of your row, you’ll end up with a much wider triangular shape that will normally start curving the bottom edge – hence these sorts of rounded bottom crocheted triangle are not commonly used.

So grab a hook and some yarn, and lets get started!

You can find a full list of all abbreviations we use in our abbreviations and conversions guide. This how to crochet triangle tutorial is written in UK terminology but you can easily convert it to US terms using the guide.

How to crochet a triangle

You Will Need

  • Yarn
  • Crochet hook

Total time:

Step 1

Row 1: Make a slipknot to attach your yarn to your hook, then ch2…

…then work 2dc into the second chain from your hook (this would be the first chain you made)

Step 2

Row 2: Ch1 (does not count as a stitch), dc into your first stitch…

…then work 2dc into the next stitch. Turn.

Top Tip – When you’re crocheting triangles, you may get a little loop sticking out of the side from your first row of dc stitches – if this is the case, just pick up the loop when working into the last stitch of this row, this will help to bring it in and hide it.

Step 3

Row 3: Ch1 (again does not count as stitch), work a dc in each stitch along up to the last stitch, then work 2dc into the last stitch. Turn. So in this example, row 3 would be: dc in next 2 sts, 2dc in next st – giving you 4dc.

Step 4

Continue repeating row 3 for each further row. Your stitch count will increase by 1 for each row you work. Once your triangle is complete to your desired size, fasten off as usual.

And that’s how to crochet a triangle – simple isn’t it! If you’re wondering whether you could do this with decrease stitches instead, technically the answer is yes, but you would have to know the exact chain width that you want your final crochet triangle to have. You can easily join the shapes made from this crochet triangle pattern to each other, and if you needed to make a half triangle to create a straight edge, then it’s simply a case of just stop increasing on one side! But why stop there, once you’ve got to grips with this basic crochet triangle pattern, you can use the same theory to make all kinds of angular shapes, like using decrease stitches to bring your crocheted triangle back in to make a crochet diamond shape.

It’s worth noting that although this is a simple technique when using dc stitches, it doesn’t quite come out the same if you’re crocheting triangles using treble stitches, as these are taller stitches so you won’t get the same angles. If you want to make a triangle with treble stitches, it’s more common that you’ll do this by working in the round. So with that in mind, let’s take a look at how to crochet a triangle granny square!

How to crochet a triangle granny square

Step 1

Start off with a ch4…

…then join in the first ch with a slip stitch to make a ring. (alternatively you could use the crochet magic loop technique)

Step 2

Round 1: Ch6 (which counts as a tr and ch3)…

…then work 3tr into the ring, then ch3…

…repeat (3tr, ch3) once more into the ring…

[You will have made 3 x 3tr clusters and 3 x 3ch-spaces]

Step 3

Round 2: Ss in the next 3ch-sp and ch3…

…work (2tr, ch3, 3tr, ch1) in same 3ch-sp as your first ss…

… then work (3tr, 3ch, 3tr, ch1) into the next 3ch-sp…

… and repeat (3tr, 3ch, 3tr, ch1) one more time into the last 3ch-sp…

…then finish the round with a ss to join in the top of your starting 3ch.

And that’s how you make a crochet triangle granny square. Your corners may be a little bit rounded like in the image above, but blocking will help to define the triangular shape, and it will be a lot less noticeable if you use this crochet triangle pattern to join multiple granny triangles together.

If you found these crocheted triangle tutorials useful, why not take a look at some more!

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Matt Spiers

Digital Assistant, Gathered

Matt Spiers is a crochet artist and designer who has been overseeing Gathered’s crochet articles for over 2 years. He previously worked as Digital Assistant for Simply Crochet magazine and is our in house video editing pro. What started as a hobby a decade ago led to Matt developing a passion (and then a career) with crochet. As well as still regularly writing and designing for Simply Crochet magazine, Matt is a crochet artist in his own right, having displayed and created crochet installations at festivals and fibre events across the UK. You can keep up to date with Matt at @onemancrochet on Instagram.

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You can use this single crochet triangle in many ways. It could become an applique. You could create bunches of these triangles and stitch them together to create larger projects—afghans, pillows, and placemats. Combine this triangle with other shapes as desired to make interesting motifs and vignettes.

Feel free to use this pattern to make your own creative ideas a reality.

Materials Needed

  • Yarn: To crochet the sample triangle, use a small amount of Cascade 220, which is a worsted weight yarn.
  • Crochet hook: You can use an I / 9—5.50 mm crochet hook to make the sample triangle. This might or might not be the right size hook for the particular project you have in mind. If you want to make a triangle that's the exact same size as this one, this size is a great starting point for a hook. However, you should choose whichever size hook you need to achieve a comfortable tension for the specific yarn or thread you want to use for crocheting your triangle(s).
  • Tapestry needle: You will use the tapestry needle to weave in your ends.

Gauge and Finished Size

This sample applique measures about four inches tall and four inches wide at the widest point. If you want a different size, you can easily make larger or smaller triangles just by changing the materials you use.

For smaller triangles, try working with crochet thread or fine yarn.

For larger triangles, try bulky, chunky, or super bulky yarns. For really large triangles, try holding two or more strands of bulky or super bulky yarn together when working the pattern.

For most purposes, you don't need to match this gauge exactly to achieve success. However, if you want to use bunches of triangles together in the same project, you do need to match your own gauge so that all the triangles will be the same size, and will fit together nicely when you piece them together.

There are many different ways on how to crochet triangles, this pattern will explain you how to crochet a triangle in spiral rounds. With the base shape of a triangle you can easily create 3-dimensional shapes as the tetrahedron or triangular boxes and blocks.

Crochet triangles can be used as cloths, table runner, blankets, kerchief, pottholders, coasters and easy ponchos made out of two triangles. For Amigurumi they can be used as ears, scales, horns, hands, feet and many more elements.

The depicted Crochet Triangle have been crocheted with the “Schachenmayr Catania” yarn with a 2.5 mm crochet hook.

Triangle Crochet Pattern

Needed Techniques

Needed Materials and Tools

To order the materials click on the respective link (affiliate link).

More Fantastic Posts

  • Colors: blue
  • This pattern was crocheted using the “Schachenmayr Catania” yarn (100% Cotton, Meterage: 125 m, Yarn Ball Weight: 50 g, Yarn Weight: Sport – 5ply / Fine (2)) in the following colors:

Crochet Triangle

The triangle is crocheted in Cloud in spiral rounds with single crochet stitches.

Use the check boxes to mark your finished rounds, rows and steps.

  • Crochet the triangle in spiral rounds in Cloud.
  • Round 1: 3 sc into the Magic Ring (3 stitches).
  • Round 2: [4 sc into the next stitch stitch] repeat till end of round (12 stitches).
  • Round 3: 2 sc, [4 sc into next stitch, 3 sc] repeat 2 times, 4 sc into next stitch, 1 sc (21 stitches).
  • Round 4: 4 sc, [4 sc into next stitch, 6 sc] repeat 2 times, 4 sc into next stitch, 2 sc (30 stitches).
  • Round 5: 6 sc, [4 sc into next stitch, 9 sc] repeat 2 times, 4 sc into next stitch, 3 sc (39 stitches).
  • Round 6: 8 sc, [4 sc into next stitch, 12 sc] repeat 2 times, 4 sc into next stitch, 4 sc (48 stitches).
  • Round 7: 10 sc, [4 SC into next stitch, 15 sc] repeat 2 times, 4 sc into next stitch, 5 sc (57 stitches).

Done is your crochet triangle. Continue crocheting additional rounds with the same formula for a bigger triangle. The distance between the three corners increases by 3 stitches from corner to corner with each round, for a total of 9 stitches per round.

Triangles are a fun alternative to squares that are very nearly as simple. They are often seen as shawls, kitty cat ears, and as motifs. You could use them for funky coasters, gnome hats, doll sleeves, bikini cups, flags – whatever you like!

There are two basic methods to create a triangle worked in rows: you can either start at the point and increase, or start at the base and decrease to the point. As you can see from the picture, the results are very similar. There are a few determining factors which can help you decide which direction to go: for example, if you are making a shawl and don’t know how far your yarn will stretch, you will probably want to begin at the point. This way, you can keep making your triangle larger and larger, only stopping when you run out of yarn. If, on the other hand, you want a small triangle, you may want to start with a chain a certain number of stitches wide and decrease. This way, you won’t accidentally keep going past the point you should have stopped, and your rows will keep getting shorter and shorter (which is always fun. It feels like you’re going faster!).

To make a triangle like the one shown by increasing, chain 2 and make a single crochet in the second chain from the hook. Chain 1, turn, increase, ch 1, turn. *Single crochet in each stitch across, chain 1, turn. Single crochet increase in the first stitch and last stitch of this row, making single crochets in all stitches between. Repeat from * to desired length; finish off.

To make a triangle like the one shown by decreasing, make a chain of the desired number of stitches plus one. Single crochet in the second chain from the hook and each across, chain 1, turn. Decrease, single crochet across until two stitches remain, decrease. Chain 1, turn. *Single crochet in each stitch across, chain 1, turn. Single crochet decrease in the first two stitches, single crochet across until two stitches remain, decrease. Repeat from * until one stitch remains; finish off.

If you increase/decrease every row, rather than every other row, your triangle will be shorter, less pointed. If you increase/decrease less frequently than every other row (say, every third row), it will be much more narrow. Experiment with stitches and patterns to make a triangle that is unique to you!

It’s no secret that I love a granny square and I’m not alone. Beloved of the crochet community this humble little square has launched many people’s journey into crochet. It’s for a good reason…well several reasons, actually! To begin with, it’s a really simple pattern to master. Using just a few basic stitches and with a recognisable shape, it’s a great beginning to learn shaping and stitch placement. It’s also so, SO versatile – from blankets and cushions to cardigans and cowls. You can use this simple square for anything. Well, anything square shaped. So, this brings me to the pattern I’m sharing with you today, the Granny Triangle.

It’s all the things you know and love about a granny square…but triangular! This makes it the perfect shape for adding a funky twist to a blanket, making bunting or even a granny square shawl!

Ready to learn this terrific triangle?


Yarn: Caron Simply Soft in Fuchsia

Hook: 4.5mm


Darning Needle


Written in UK terms.



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

Treble Crochet (tc): Yarn over and insert your hook into the chain or stitch, yarn over and pull through (you will have three loops on the hook) yarn over and pull through two loops (you will have two loops on your hook) yarn over and pull the yarn through both of the remaining loops on the hook

Stitch(es) (st(s))

Unsure of the differences between UK and US terms? Need a refresher on how to do your stitches? In my ‘How to crochet: A handy reference guide’ EBook I help you with all of these terms and you can always have them to hand! You will also get exclusive access to free video instructions. You can find my EBook HERE.

If you love granny squares as much as I do, you’re going to love my Great Big Granny Square Master List. It has all of the granny designs I’ve made together in one handy place!


Chain 4 and join with a ss.

Row 1: 4 ch (counts as tr and 1 ch here and throughout) working into circle, 3 tr, 2 ch, 3 tr, 1 ch, tr. Turn.

Row 2: 4 ch, 3 tr in 1-ch sp, 1 ch. (3 tr, 2 ch, 3 tr) in 2-ch sp. 3 tr in 1-ch sp, 1 ch, tr. Turn.

Row 3: 4 ch, *3 tr in 1-ch sp, 1 ch. Repeat from * to 2 ch sp. (3 tr, 2 ch, 3 tr) in 2-ch sp. *3 tr in 1-ch sp, 1 ch. Repeat from * to last sp. 1 ch, tr in same sp. Turn.

Repeat row 3 until you reach your desired size.


00:05 Introduction and materials

09:15 Row 4 (Explaining pattern repeat)

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