Hexagon Crochet Cardigan Pattern: Modern Men’s Sweater Jacket in Adult Sizes S–5XL

There’s something quietly revolutionary about a garment built from hexagons. Six-sided shapes have fascinated mathematicians, architects, and textile artists for centuries, and when you arrange them thoughtfully across a man’s torso, the result is a sweater jacket that feels genuinely unlike anything hanging in a retail store. This hexagon crochet cardigan pattern brings together the satisfying modular construction of motif-based crochet with the wearability of a modern men’s sweater jacket. Whether you’re making this for yourself or as a thoughtful handmade gift, the process is as enjoyable as the finished piece — and the sizing range of S through 5XL means this pattern works for nearly every body.

Let’s dig into everything you need to know before casting on your first yarn loop.

Why Hexagons Work Beautifully in Men’s Knitwear

Hexagons tile perfectly without gaps, which makes them one of the most efficient shapes in modular crochet. Unlike squares, which can create a boxy, quilted look, hexagons produce a more organic, honeycomb-like texture that reads as sophisticated rather than handmade-looking. For men’s garments specifically, this matters. A lot of men who wear handmade knitwear want something that looks intentional and fashion-forward rather than something that screams “craft fair.”

The hexagon structure also offers some practical advantages. Because the cardigan is built motif by motif and then assembled, you’re never working with an enormous piece of fabric on your lap. Each hexagon takes around twenty to forty minutes depending on your yarn weight and hook size, which means the project is naturally broken into satisfying, portable chunks. You can crochet a hexagon on your commute, finish one during a long movie, or knock out three on a lazy Sunday afternoon.

Additionally, because the motifs are flat pieces joined together, this cardigan drapes beautifully. There’s no excess fabric bunching at the underarms or pulling across the chest the way some top-down raglan sweaters can. The geometry does the fitting work for you, and with the adjustment guidance built into this pattern, you can customize the fit across the full S–5XL range without having to recalculate a single stitch count from scratch.

Yarn and Materials

Choosing the right yarn for a men’s cardigan is arguably the most important decision you’ll make before starting this project. You want something with enough structure to hold the hexagon shape without blocking, enough drape to make the finished garment comfortable to wear, and enough durability to survive regular washing and daily use.

Recommended yarn weight: Worsted or Aran weight works best for this pattern. DK weight is possible but will require more motifs to achieve the same coverage, and bulky yarn tends to make the hexagons look cartoonish rather than refined.

Fiber recommendations: A wool-acrylic blend (something in the range of 80% merino, 20% acrylic) gives you the warmth and breathability of natural fiber with the durability and easy care of acrylic. Pure cotton or cotton-blend yarns produce a beautiful relaxed drape and are excellent for warmer climates, though the finished cardigan will feel more like a lightweight jacket than a cozy sweater. Pure acrylic is budget-friendly and machine washable, making it a great choice if you know the wearer is hard on clothing.

Yardage guide by size:
Size S requires approximately 1,100–1,300 yards. Size M requires 1,300–1,500 yards. Size L requires 1,500–1,700 yards. Size XL requires 1,700–1,950 yards. Size 2XL requires 1,950–2,200 yards. Size 3XL requires 2,200–2,500 yards. Size 4XL requires 2,500–2,750 yards. Size 5XL requires 2,750–3,100 yards.

These estimates include a small buffer for joining yarn and working the finishing band. If you’re planning to add a contrasting color border or interior detail on each hexagon, add 15–20% to these estimates for the contrast color and reduce your main color yardage by a similar amount.

Hook size: A US size J-10 (6.0 mm) hook is the starting recommendation. Your gauge swatch will tell you whether to go up or down. Because tension habits vary so widely in crochet, especially among experienced makers who have trained their hands over years, always trust your gauge swatch over the suggested hook size.

Additional materials: Stitch markers (locking style work best), a yarn needle for joining and weaving in ends, scissors, and a measuring tape. If you plan to add closures, you’ll want four to six buttons in a size between 20 mm and 30 mm — wooden or horn buttons look especially handsome on this style of cardigan.

Gauge and Sizing

Getting gauge right in a modular crochet project has a slightly different meaning than in a traditional sweater pattern. Rather than measuring a certain number of stitches per inch in a swatch, you’re measuring the finished size of one hexagon. This makes things more concrete and easier to check.

Target hexagon size (laid flat, point to point): 4.5 inches for worsted weight at the recommended hook size. If your hexagon measures larger than 4.5 inches, go down a hook size. If it measures smaller, go up.

Finished chest measurements:
Size S finishes at approximately 38–40 inches. Size M finishes at 41–43 inches. Size L finishes at 44–46 inches. Size XL finishes at 47–50 inches. Size 2XL finishes at 51–54 inches. Size 3XL finishes at 55–58 inches. Size 4XL finishes at 59–62 inches. Size 5XL finishes at 63–67 inches.

These measurements include two to four inches of positive ease, which is appropriate for a relaxed-fit sweater jacket. If the wearer prefers a closer fit, size down one. If they prefer a very relaxed, open-front jacket feel, size up one.

The Hexagon Pattern

Before assembling the cardigan, you need to master the single hexagon. This particular hexagon is worked in rounds from the center out and produces a flat, symmetrical shape with a clean edge that joins beautifully to its neighbors.

Foundation ring: Chain 4 and join with a slip stitch to form a ring, or use a magic ring if you prefer.

Round 1: Chain 3 (counts as first double crochet throughout), work 11 more double crochet into the ring. Slip stitch to top of beginning chain-3. You have 12 double crochet.

Round 2: Chain 3, work 1 double crochet into the same stitch. Work 2 double crochet into each stitch around. Slip stitch to top of beginning chain-3. You have 24 double crochet.

Round 3: Chain 3, work 1 double crochet into the same stitch. Work 1 double crochet in the next stitch. Continue around working 2 double crochet in one stitch and 1 double crochet in the next, alternating to the end. Slip stitch to the top of beginning chain-3. You have 36 double crochet.

Round 4 (hexagon shaping round): This round creates the six corners. Chain 3, work 1 double crochet into the same stitch (this forms the first corner). Work 1 double crochet into each of the next 5 stitches. Work 2 double crochet into the next stitch. Continue in this pattern — corner pair, 5 single double crochet, repeat — around the circle. Slip stitch to close. You have 42 stitches and 6 clear corner points.

Round 5: Chain 1, single crochet around, working 3 single crochet into each corner stitch. This final round gives you the clean edge that makes joining easier and gives the hexagon a crisp, finished look.

Fasten off, leaving a long tail for joining if you plan to use the mattress stitch join method. If you prefer the flat slip stitch join or the join-as-you-go method, you can fasten off with a shorter tail.

How Many Hexagons Do You Need?

The number of hexagons required changes based on your target size. Here’s the full breakdown:

Size S requires 48 hexagons. Size M requires 54 hexagons. Size L requires 60 hexagons. Size XL requires 66 hexagons. Size 2XL requires 72 hexagons. Size 3XL requires 80 hexagons. Size 4XL requires 88 hexagons. Size 5XL requires 96 hexagons.

These numbers include the hexagons for both front panels, the back, and the sleeves. The sleeves use a tapered arrangement of hexagons that creates a natural narrowing from shoulder to cuff without any shaping work on your part — the geometry handles it automatically.

If you’re working in a single color, you can crochet all your hexagons first and then assemble. If you’re planning a color pattern — perhaps alternating two neutrals, or doing a gradient arrangement — lay all your finished hexagons out on a flat surface and arrange them before joining to make sure the color flow reads the way you want it to.

Assembly and Joining

Assembly is where this project starts to feel like a real garment, and it’s also where a lot of crochet makers get a little nervous. The good news is that hexagon assembly is forgiving. The flat slip stitch join, worked from the right side using your main color or a contrast color, creates a visible seam that actually adds to the garment’s texture and can look quite intentional and beautiful.

Start with the back panel. Arrange your hexagons according to the layout diagram for your size (a printable layout diagram is available to accompany this pattern). The back is a roughly rectangular arrangement — wider than it is tall — with half hexagons filling in the jagged edges at the top and bottom to create clean hem and shoulder lines. You can crochet half hexagons specifically for this purpose, or you can use a simple single crochet edging to square off the edges after assembly. Both approaches work well.

Join the back panel first, then assemble the two front panels separately, then join front panels to back at the shoulders and side seams. Sleeves are assembled as tubes and then set into the armhole openings. The armhole opening is naturally formed by the gaps left when you arrange the hexagons — no cutting or steeking required.

For the button band and front opening edges, work three to five rows of single crochet along each front edge. This stabilizes the edge, prevents rolling, and gives you a clean surface for sewing on buttons or adding buttonholes. To create buttonholes, work chain-2 spaces evenly spaced along one front band on the second row, then fill them in with 2 single crochet on the following row.

Customizing Your Hexagon Cardigan

One of the best things about a modular pattern like this one is how easily it accommodates customization. Here are a few directions worth considering.

Color blocking: Use two or three colors assigned to specific sections of the layout. For example, a dark charcoal for the back and sleeves with a heathered gray for the front panels creates a classic, subtle effect. A bold color like rust or forest green worked into every third hexagon in an alternating pattern gives the cardigan a striking geometric energy without being loud.

Granny hexagons with open centers: For a lighter, lacier version suited to warmer months, modify the central rounds to leave an open lattice pattern rather than solid double crochet fabric. This works particularly well in cotton or cotton-linen blends and gives the cardigan a relaxed, resort-style aesthetic.

Interior contrast color: Work the first three rounds of each hexagon in a contrast color and the final two rounds in your main color. This creates a visible hexagon-within-a-hexagon effect on the right side that adds incredible visual depth without a dramatic color commitment.

Pocket addition: Two patch pockets, each made from four hexagons arranged in a two-by-two square (you’ll need to do some trimming or half-hexagon edging to square off the pocket opening), can be slip stitched onto the front panels before the final finishing. Practical and handsome.

Longer length: To make this a cardigan coat rather than a standard cardigan, simply add one additional row of hexagons to the bottom of the front and back panels. This adds roughly four to five inches to the total length and uses approximately 12 to 16 additional hexagons depending on your size.

Blocking and Finishing

Blocking a hexagon crochet cardigan transforms it. The individual motifs, which may look slightly irregular or puckered fresh off the hook, relax and even out beautifully with a wet block or steam block. Fill a basin with cool water, submerge the assembled cardigan, gently press out the excess water without wringing, and lay flat on blocking mats. Pin each hexagon point gently to encourage the corners to open up. Allow to dry fully before removing pins. This step takes patience — a large cardigan may take 24 hours to dry — but the result is a garment with a smooth, professional drape that looks like it belongs in a boutique.

Weave in all ends securely before blocking. The moisture from blocking can loosen loosely woven ends, so double-back and weave in multiple directions.

Caring for Your Finished Cardigan

Depending on your yarn fiber content, your care instructions will vary. Wool blends should be hand washed or machine washed on a gentle, cold cycle and laid flat to dry — never hung, as hanging will stretch the motifs and distort the shape. Acrylic and acrylic-blend yarns are generally machine washable on a warm or cool cycle and can be tumble dried on low. Cotton yarns can handle slightly warmer water and typically improve with washing — the fabric softens and gains drape over time.

Tell the recipient (or remind yourself) to store this cardigan folded rather than hung. Because the hexagon structure doesn’t include a traditional shoulder seam running straight up to a set collar, the garment is slightly more vulnerable to gravity-induced stretching at the shoulders than a traditionally constructed sweater.

A Note on Inclusive Sizing

Inclusive sizing in crochet patterns is not just a nice-to-have; it’s an act of respect toward the full range of people who want to wear handmade clothing. This pattern covering sizes S through 5XL reflects the reality that men’s bodies come in a wide range of shapes and sizes, and that every size deserves a well-drafted, clearly written pattern rather than a vague note at the bottom saying “you can add more hexagons if needed.”

The hexagonal construction makes inclusive sizing especially elegant here. Because you’re not reshaping armhole curves or recalculating raglan increases, expanding from a size L to a 4XL is a matter of adding more motifs rather than rewriting the fundamental pattern logic. The geometry scales naturally. This is one of the quiet gifts of modular crochet.

Final Thoughts

This hexagon crochet cardigan is the kind of project that rewards patience. It’s not a weekend throw-together — depending on your pace, you might spend three to six weeks making hexagons before you ever start seeing the garment take shape. But that slow build is part of the pleasure. Each hexagon is a small, complete object. Each joining session reveals a little more of the larger design. And when you finally slip the finished cardigan onto its intended wearer and the hem falls just right and the hexagons catch the light with their texture and geometry, the accumulated time feels exactly right.

Make your swatch, trust your gauge, lay out your hexagons thoughtfully, and enjoy the process. This is modern men’s knitwear made by hand, and it’s worth every stitch.