How to Crochet a Sweater Vest: A Step-by-Step Tutorial for All Skill Levels

If you’ve been scrolling through your favorite knit and crochet feeds lately, you’ve probably noticed that the sweater vest is having a serious moment. Once filed away as a relic of grandpa’s wardrobe, this layerable, cozy staple has made a full comeback — and the handmade version? Even better. Today I’m walking you through everything you need to know to crochet your own sweater vest, from choosing your yarn to weaving in that final end. Whether you’re a confident beginner or an intermediate crocheter looking for your next satisfying project, this tutorial is for you.

And if you’re more of a visual learner, I’ve got you covered. Head over to my YouTube channel, belina bellwoodtitle, where the full video tutorial is now live. You can pause, rewind, and crochet along at your own pace. But this written guide covers every single step in detail, so bookmark it and keep it open while you work.

Why Crochet a Sweater Vest?

Before we get into the how, let’s talk about the why. A crocheted sweater vest is honestly one of the most versatile garment projects you can tackle. Unlike a full sweater, you don’t have to worry about setting in sleeves or achieving a perfect armhole depth on both sides simultaneously — the construction is more forgiving, the fabric works up faster, and the finished piece has so much wearability.

You can throw a crochet vest over a long-sleeve turtleneck in the fall, layer it over a flowy blouse in spring, or wear it alone as a statement piece on a warmer day. It works in chunky yarn for a cozy, textured look or in a lighter DK weight for something more refined and polished. Once you make one, you’ll want to make five.

Materials You’ll Need

Getting your materials sorted before you cast on makes everything go more smoothly. Here’s what I used for this tutorial, along with some notes on substitutions.

Yarn: I’m using approximately 400–600 yards of a worsted weight yarn (the exact amount will depend on your size). I love a soft merino blend for this project — it has great drape, wears comfortably against skin, and blocks beautifully. That said, any smooth worsted or aran weight yarn will work. Avoid anything too fuzzy or textured for your first attempt, because you’ll want to be able to see your stitches clearly as you go.

Hook: I’m working with a 5.0 mm (US H/8) hook, which gives me a nice, slightly open fabric that drapes well. If your tension runs tight, go up half a size. If it runs loose, try a 4.5 mm.

Notions: You’ll need a yarn needle for seaming and weaving in ends, stitch markers (these are genuinely your best friends in garment construction), scissors, and a measuring tape. A few locking stitch markers will be especially helpful for marking the armhole placement.

Gauge: Before you start your actual vest, please swatch. I know it’s tempting to skip this step, but garment fit depends on it. You’re aiming for approximately 14 stitches and 16 rows per 4 inches in half double crochet. Wash and block your swatch before measuring, since many yarns relax and grow after washing.

Understanding the Construction

This vest is worked in two flat panels — a front and a back — that are then seamed at the shoulders and sides, leaving openings for the armholes. The neckline is shaped on the front panel by working each shoulder separately after the neck split. A simple edging is worked around the armholes and neckline to finish everything off neatly.

This construction method is beginner-friendly because you’re essentially making two rectangles with some simple shaping. There are no tricky in-the-round joins to manage, and the seaming is straightforward. The shaping comes from increases at the sides for the body and decreases at the neckline for the front panel.

If you prefer top-down or seamless construction, those modifications are something I’ll cover in a future video on the channel — so make sure you’re subscribed to belina bellwoodtitle so you don’t miss it.

Sizing

This tutorial covers a range of sizes. The pattern as written fits a finished bust of approximately 36–38 inches with 2–4 inches of ease, which works well as a medium/large. To size up, add 6 foundation chains per size increment. To size down, subtract 6. The length can also be adjusted easily — I’ll point out where to do that as we go.

For reference, the finished measurements of the sample in my video are:

• Bust: 38 inches (relaxed, with ease)
• Length: 23 inches from shoulder to hem
• Armhole depth: 8 inches

The Back Panel

Let’s start with the back panel, which is the simpler of the two pieces since there’s no neck shaping involved.

Foundation Chain: Chain 68. This gives you a foundation that measures approximately 19 inches. If you’ve swatched and your gauge is different, calculate: desired width in inches multiplied by your stitch gauge per inch, then add 2 for the turning chain.

Row 1: Half double crochet (hdc) in the third chain from the hook and in every chain across. You should have 66 hdc. Chain 2 and turn.

Row 2 onward: Hdc across each row, chaining 2 and turning at the end of each row. Continue working even (no increases or decreases) until your piece measures 14 inches from the foundation edge. This is the body length below the armhole, and this is also where you can add or subtract length if you want a longer or cropped vest. Mark the end of this row with a stitch marker on both sides — this is your armhole starting point.

Armhole Shaping: Continue working even across all stitches. You are not going to decrease for the armhole on the back panel in this construction method. Instead, you’ll leave the armhole open when seaming. Simply continue working even rows until the back panel measures 23 inches total from the foundation edge (or your desired total length). Fasten off and weave in ends.

Set the back panel aside.

The Front Panel

The front panel is worked identically to the back panel until you reach the neckline split. Everything up to that point is the same foundation chain, the same stitch count, the same row-by-row hdc worked even.

Body Section: Work exactly as the back panel through the 14-inch armhole marker. Place your stitch markers at both sides.

Continue to Neck Split: Work even until your piece measures 16 inches total from the foundation edge. At this point, you’re going to split the work to shape the V-neck or round neck — choose whichever neckline style you prefer. In my video on belina bellwoodtitle, I demonstrate both options, but I’ll describe the V-neck here since it’s my personal favorite.

V-Neck Shaping — Left Shoulder: Count to the center of your row. For 66 stitches, work across the first 33 stitches, chain 2, and turn. Leave the remaining 33 stitches unworked for now. You’ll come back to them.

Now work across your 33 stitches, but at the end of every right-side row (i.e., every other row), decrease one stitch at the neck edge by working an hdc2tog (half double crochet two together) across the last two stitches. Continue decreasing every RS row until you have 24 stitches remaining on this shoulder.

Work even on these 24 stitches until the front panel matches the total length of the back panel (23 inches). Fasten off.

V-Neck Shaping — Right Shoulder: Rejoin your yarn at the center of the work where you left off. Work across the remaining 33 stitches toward the right edge. Decrease one stitch at the neck edge (the beginning of the row this time, so work hdc2tog over the first two stitches) every RS row until you have 24 stitches remaining. Work even to match length. Fasten off and weave in ends.

Seaming the Panels

Now you have two panels ready to join. Lay them flat, wrong sides together, and check that they’re the same length. Block lightly if needed — even a quick spritz with water and a gentle press with a damp cloth can make a big difference in how evenly your panels seam up.

Shoulder Seams: Using your yarn needle and a length of matching yarn, seam across each shoulder using the slip stitch seam method or the mattress stitch — whichever you prefer. You’re joining 24 stitches on each shoulder. The mattress stitch gives a flatter, more invisible seam and is my preference for garments. In the video I demonstrate both, so check belina bellwoodtitle for the visual.

Side Seams: Align the side edges of the front and back panels. Starting at the hem, seam upward using mattress stitch or slip stitch. When you reach the armhole marker (at 14 inches), stop and fasten off. Leave the remaining 9 inches (from the armhole marker to the shoulder) open as the armhole. Repeat on the other side.

At this stage, you have a complete vest body with open armholes and a shaped neckline. Try it on! Check the fit, the length, the armhole size. Make any adjustments now before you add the edging.

Finishing Edges

Edging is where your vest goes from “almost done” to “actually polished,” and it doesn’t have to be complicated. A simple single crochet border worked consistently all the way around each opening will stabilize the edges, tighten up any unevenness, and give the vest a clean, finished look.

Armhole Edging: Join yarn at the underarm seam and work single crochet evenly all the way around the armhole opening. The key to a neat armhole edge is working the right number of stitches per inch — too many and the edge will ruffle, too few and it will pull. Aim for approximately 1 stitch per row along the vertical sides and 1 stitch per stitch along any horizontal edges. Slip stitch to join, then fasten off. Repeat for the second armhole.

If you’d like a slightly more textured edge, work two rounds of single crochet, then finish with a round of reverse single crochet (also called crab stitch) for a lovely braided-looking border. This is my personal favorite finishing touch for vests.

Neckline Edging: Join yarn at one shoulder seam and work single crochet all the way around the neckline opening. For the V-neck point, work three single crochets into the center stitch to allow the edge to lay flat without puckering. Work two or three rounds depending on how thick you want the collar. Finish with reverse single crochet if desired. Slip stitch to join and fasten off.

Hem Edging (optional): If your foundation chain edge looks a little uneven or you simply want a more finished hem, work a round of single crochet along the bottom of the vest as well.

Blocking Your Finished Vest

I cannot stress enough how much blocking transforms a crocheted garment. Even if you used a superwash wool or acrylic yarn, a gentle blocking session will even out your stitches, open up the fabric, help it drape properly, and make the whole piece look more intentional and professionally made.

For a wool or wool-blend yarn, use the wet blocking method: soak the vest in cool water with a drop of wool wash for 20 minutes, then gently press out the excess water (don’t wring!), lay flat on a blocking mat, and pin to your desired dimensions. Let it dry completely before wearing.

For acrylic yarn, steam blocking works better than wet blocking. Hold a steam iron several inches above the fabric — never touching — and allow the steam to relax the fibers. Be cautious with acrylic and heat; test on your swatch first.

Tips for Getting the Best Results

A few extra notes that I’ve picked up from making many, many sweater vests over the years:

Count your stitches at the end of every row, especially during the shaping sections. It takes ten seconds and saves you from discovering a stitch count error fifteen rows later.

When working the V-neck decreases, place a stitch marker at the neck edge of each row so you can easily identify which side you’re on. This gets surprisingly easy to lose track of when you’re watching TV and crocheting, which, let’s be honest, is most of us.

If you find that your side seams are pulling or puckering, try using a slightly larger hook for the seaming yarn. The extra bit of give prevents the seam from drawing up tighter than the fabric itself.

Don’t skip the try-on during the process. Trying on your work-in-progress once or twice (particularly before you commit to a final length) makes a huge difference in achieving a fit you’ll actually love wearing.

Watch the Full Video Tutorial

All of the techniques described in this post — the hdc2tog decrease, the V-neck shaping, the mattress stitch seam, the reverse single crochet edging, and the blocking process — are demonstrated in real time on my YouTube channel. Search belina bellwoodtitle or follow the link in my bio to find the full sweater vest tutorial. I walk through each section slowly, show close-ups of tricky spots, and share a few extra tips in the video that didn’t make it into this post.

If you make this vest, I’d love to see it. Tag me in your finished photos and let me know what yarn and colorway you chose. There’s something genuinely exciting about seeing all the different interpretations people bring to the same pattern — different yarns, different colors, different fit preferences — and the community that’s built up around these projects is honestly one of my favorite parts of sharing tutorials.

Happy crocheting, and I’ll see you in the next one.