How to Crochet a Classic Granny Square Step by Step

A classic granny square is one of crochet’s most useful building blocks. It grows from the center outward in tidy rounds, so you can practice the same cluster-and-chain rhythm while making something that is immediately useful for blankets, bags, cushions, garments, and home decor. If you have been searching for how to crochet a granny square, this step-by-step guide will walk you through a traditional square with clear corners, balanced sides, and an easy repeat.

This tutorial uses US crochet terminology and standard double crochet groups. Read through the round overview before you begin, then work at a relaxed pace. The most important habits are placing every corner in a corner space, counting the four corners, and keeping the chain spaces open enough for the next round.

Quick answer: how do you crochet a granny square? Chain 4 and join into a ring. Round 1: ch 3, 2 dc in the ring, ch 2, then (3 dc, ch 2) three more times, and join. Every later round: work (3 dc, ch 2, 3 dc) in each corner space and 3 dc in each side space, with ch 1 between the groups, then join. A four-round square has 16 clusters.

Classic granny square at a glance

A classic granny square is made with four rounds of the same basic idea: three double crochet stitches worked into the same space make a 3-dc cluster. One-chain spaces separate the clusters along the sides, while two-chain spaces at the corners create the square shape. From Round 3 onward, each new round adds one more cluster to every side, and every corner keeps two clusters.

The instructions below begin with a center ring made from four chains. You can use a magic ring instead if you prefer an adjustable center, but the chain-ring method is simple, dependable, and easy to see while you are learning. The sample square has four rounds. Continue with the repeat in the “How to make the square larger” section if you want a bigger one.

Materials

• Worsted-weight yarn, approximately 40 to 60 yards for a four-round practice square
• A 5 mm crochet hook, or the size that gives you fabric you like
• Scissors
• A yarn needle for weaving in ends
• A removable stitch marker, optional but helpful for marking the first corner

Yarn weight, hook size, and gauge

Worsted-weight yarn, also called medium or category 4 yarn, is a comfortable choice for a first classic granny square. Smooth acrylic, cotton, or a cotton blend makes the stitches and spaces easy to identify. Avoid very fuzzy or heavily textured yarn until you feel confident reading the clusters.

Start with a 5 mm hook, then adjust if your loops feel tight or loose. Granny squares do not have one universal gauge because the finished size depends on yarn, hook, tension, and the number of rounds. For a blanket made from multiple squares, however, consistency matters. Crochet two or three squares with the same materials and compare their measurements before making dozens.

A useful gauge note: for a four-round square, record both the width and the height, and check that the center is lying flat. If the square cups, your tension may be too tight or you may have too few chains in the spaces. If it ripples, your tension may be loose or you may be adding stitches. Change hook size only after checking the round instructions and stitch placement.

Skill level and time estimate

Skill level: advanced beginner. You should be comfortable making a slip knot, chain, slip stitch, and double crochet. Time estimate: about 20 to 40 minutes for one four-round square, depending on your pace, yarn changes, and finishing method. A larger square will take longer as each round adds more clusters.

US and UK crochet terminology

This pattern is written in US terms. The most important translation is US double crochet (dc) = UK treble crochet (tr). US single crochet is called double crochet in UK patterns, so always confirm the terminology before beginning. The chains, slip stitches, and cluster placement in this tutorial remain the same, but the name of the tall stitch changes.

Abbreviations

• ch: chain
• dc: double crochet
• sl st: slip stitch
• st: stitch
• sp: space
• rep: repeat

In this pattern, “3-dc cluster” means three double crochet stitches worked into the same chain space. The cluster is not joined at the top like a decrease; each double crochet is completed normally.

Before you start: make the center ring

1. Make a slip knot and place it on the hook.
2. Chain 4. Insert the hook into the first chain you made, yarn over, and pull through both the chain and the loop on your hook (a slip stitch) to join the chains into a ring. Check that the chains are not twisted.
3. Keep the center opening visible. The first round is worked into the middle of this ring, not into the individual chains.

Round-by-round instructions

Round 1: create four corner spaces

Chain 3. This chain counts as the first double crochet. Work 2 dc into the center of the ring, then chain 2. This is your first corner.

Work 3 dc into the center of the ring, ch 2 three times. You now have four 3-dc clusters and four corner spaces. Slip stitch into the top of the beginning chain 3 to close the round. Fasten off if you want a color change, or slip stitch across to the next corner space if continuing with the same yarn.

Round 1 check: you should see four groups of three double crochets and four open two-chain corners. The center should be roughly square rather than pulled into a tight circle.

Round 2: add a cluster to each corner

Join the new color in any corner space, or slip stitch across the tops of the stitches until you reach a corner. Chain 3, then work 2 dc into the same corner space. Chain 2, and work 3 dc into that same corner space. You have made the first corner of Round 2. Chain 1.

For each of the next three corner spaces, work 3 dc, ch 2, 3 dc into the space, then ch 1. After the final corner’s ch 1, slip stitch into the top of the beginning chain 3 to close. The square now has two clusters in each corner and a one-chain space in the middle of each side.

Round 2 check: 8 clusters in total, four chain-2 corner spaces, and four chain-1 side spaces.

Round 3: work in side spaces and corners

Join yarn in any corner space. Chain 3, then work 2 dc into the same corner space. Chain 2, and work 3 dc into the same corner space to complete the starting corner. Chain 1.

Work 3 dc into the next chain-1 side space, then ch 1. This is a side space, so do not add a chain-2 gap here. At the next corner, work 3 dc, ch 2, 3 dc into the corner space, then ch 1.

Repeat around: work one 3-dc cluster in each side space and two 3-dc clusters separated by ch 2 in each corner, with ch 1 after every cluster group. Close with a slip stitch into the top of the beginning chain 3. At the end of this round, each side has one cluster between its corners.

Round 3 check: 12 clusters in total, four chain-2 corner spaces, and eight chain-1 side spaces.

Round 4: repeat the growing pattern

Join yarn in a corner space, or slip stitch to a corner if you are continuing without a color change. Chain 3, then work 2 dc, ch 2, and 3 dc in the same corner. Chain 1.

Work 3 dc in each chain-1 side space, with ch 1 after each cluster, until you reach the next corner. In every corner, work 3 dc, ch 2, 3 dc, then ch 1. Continue around the square, placing one cluster in every side space and two clusters in every corner. Close with a slip stitch into the top of the beginning chain 3. Each side now has two clusters between its corners.

Round 4 check: 16 clusters in total: two on each side between the corners, plus eight in the corners.

Fasten off, leaving a tail for weaving in. Lay the square flat and gently smooth the corners. Blocking is optional, but lightly dampening the square and pinning it to an even shape can make the corners and spaces more defined.

How to make the square larger

To continue past Round 4, begin each round in a corner and use the same formula: 3 dc, ch 2, 3 dc in every corner, and one 3-dc cluster in every side space, with ch 1 between all the groups. Each new round adds one more cluster along every side between the corners. For example, Round 5 has three clusters along each side between corners; Round 6 has four. A useful rule to remember: Round n has 4 × n clusters in total.

Joining and finishing

Weave in each yarn tail on the wrong side of the square. Thread a yarn needle and run the tail back and forth through the stitches for about an inch, changing direction once or twice. Trim only after the tail feels secure. For a cleaner multicolor project, weave in tails as you finish each square rather than saving a large pile for the end.

To join granny squares, place two squares with their right sides facing up or together, depending on the seam style you want. A whip stitch creates a visible ridge, while a mattress stitch can make a flatter seam. You can also crochet the squares together with slip stitches or single crochet for a raised decorative line. Join squares in small sections and check the layout before completing the entire project.

Size and color customization

Try a single color for a simple, classic look, or change colors after each round to highlight the square’s structure. For a coordinated blanket, choose a small palette of two to four colors and repeat the same sequence across your squares. Measure each square before joining so the finished project lies evenly.

Common mistakes and how to fix them

The square is curling into a bowl

This usually means the tension is too tight, the corner chains are too short, or a corner was missed. Check that every corner has two 3-dc clusters with a chain-2 space between them. Try a larger hook if the stitches feel cramped.

The edge is wavy

Extra clusters or accidental stitches can create ripples. On side sections, place one cluster in each chain-1 side space, not in the top of a cluster. If the square is consistently ruffling, loosen your tension or check that you are not adding corner-style stitches along the sides.

The square is turning into a circle

Look for missing corners or corner spaces that are difficult to identify. Every round must have four corners, and each corner needs two clusters separated by ch 2. Mark the starting corner and count four corner spaces before closing.

The corners are pointed or uneven

Keep the chain-2 corner spaces consistent and avoid pulling the closing slip stitch tightly. If one corner is smaller, gently ease the stitches before blocking rather than stretching only that section.

Frequently asked questions

Can I use a magic ring instead of a chain ring?

Yes. A magic ring gives you a smaller, adjustable center and is especially useful when you want to close a visible hole. The first round still needs four corner spaces.

Why does my beginning chain count as a double crochet?

In this traditional style, the beginning chain 3 replaces the height of the first double crochet. If your chain 3 is loose or leaves a noticeable gap, you can use a standing double crochet or a chain-2 start, but use the same method consistently throughout a project.

Do I have to change colors after every round?

No. You can use one color for the whole square, change colors after any round, or carry a planned color sequence across a group of squares. Fasten off between colors and weave in the tails securely.

How many rounds should a granny square have?

There is no fixed number. A small motif may have three rounds, while a blanket square may have six, eight, or more. Stop when the square reaches the size your project requires and measure rather than relying only on round count.

What should I learn next?

Practice changing colors, joining squares, and lightly blocking your finished motifs. If you want a refresher on choosing tools and building comfort with basic crochet, visit Crochet Bloom Studio’s guide to 10 essential crochet tips for beginners.

Conclusion

Once you understand the four-corner structure, a classic granny square becomes a calm, repeatable project rather than a puzzle. Remember the central rhythm: clusters on the sides, two clusters in every corner, and a chain-2 space that keeps the shape open. Make one square to practice, then experiment with yarn colors, larger sizes, and different joining methods. A handful of consistent squares can grow into a blanket, bag, pillow, or many other handmade pieces.