How To Crochet A Ribbed Tube Top

If you’ve been scrolling through crochet content lately, you’ve probably noticed that ribbed tube tops are everywhere — and for good reason. They’re stretchy, flattering, endlessly customizable, and surprisingly beginner-friendly once you understand the basic technique. Whether you’re brand new to crochet or you’ve been at it for years and want to add a wearable summer piece to your portfolio, this guide will walk you through everything you need to know to crochet your own ribbed tube top from start to finish.

By the end of this post, you’ll understand how ribbed crochet works, which materials to choose, how to size your top, and how to work through every step of the pattern. Let’s dive in.

What Is A Ribbed Tube Top?

A ribbed tube top is a simple, stretchy garment worked in a rectangle that is then seamed or worked in the round to create a fitted, bandeau-style top. The ribbing comes from working into the back loops only (BLO) or front loops only (FLO) of your stitches — a technique that creates vertical ridges and gives the fabric a beautiful stretch across the body.

Unlike fitted crochet tops with shaping, a tube top is essentially a flat panel or a tube that relies on the natural elasticity of the ribbed stitch to hug the body. This makes sizing and adjusting far more forgiving than traditional garment crochet, which is one of the many reasons it has become such a popular beginner project.

Materials You’ll Need

Before you pick up your hook, gather your supplies. Having everything ready before you start will make the process much smoother.

Yarn: For a tube top, you want a yarn with great drape and some natural stretch. Cotton, bamboo, or a cotton-blend yarn are all excellent choices. Pure cotton is breathable and perfect for warm weather, while a cotton-acrylic blend offers a little more elasticity. Look for a medium weight (worsted, size 4) or a light weight (DK or sport, size 3) yarn depending on how thick or thin you want the finished fabric. For a standard sized top, you’ll typically need around 200–400 yards of yarn depending on your size and stitch height.

Crochet Hook: Choose a hook size that matches your yarn label’s recommendation, or go up one size to create a slightly looser, drapier fabric. For most medium-weight cotton yarns, a 5mm or 5.5mm hook works well. For lighter weight yarn, a 4mm or 4.5mm hook is a good starting point.

Stitch Markers: These are your best friends in any crochet project. Use them to mark the beginning of your rounds or the edges of your panels.

Yarn Needle (Tapestry Needle): You’ll need this to seam the top together if you work it flat, and to weave in your ends.

Measuring Tape: Essential for checking your gauge and measuring your body.

Scissors: Self-explanatory, but easy to forget.

Understanding Gauge

Gauge is the number of stitches and rows that fit within a specific measurement — usually four inches by four inches. Getting your gauge right is the difference between a top that fits beautifully and one that’s too tight or too loose.

To check your gauge, crochet a small swatch of at least 15–20 stitches in your chosen stitch (in this case, single crochet back loop only or half double crochet back loop only). Work at least 10–15 rows. Lay the swatch flat without stretching it and measure the stitches per inch both horizontally and vertically.

A common gauge for a medium-weight cotton yarn on a 5mm hook worked in single crochet BLO is approximately 14–16 stitches and 16–18 rows per four inches. However, your personal gauge may differ depending on how tightly or loosely you crochet, so always make a swatch and adjust your hook size as needed.

Once you know your gauge, you can calculate how many stitches and rows you need to hit your desired measurements.

Taking Your Measurements

A tube top is sized by two main measurements: your chest circumference (or bust measurement) and the desired height of the top.

Chest/Bust Measurement: Measure around the fullest part of your bust. Because ribbed crochet fabric stretches, you want your finished top to be slightly smaller than your actual measurement so it clings to the body rather than sliding down. Aim for a finished width that is 2–4 inches smaller than your bust measurement (this is called negative ease). For example, if your bust is 36 inches, you might aim for a finished tube that is 32–34 inches in circumference.

Height: This depends entirely on how long you want the top to sit on your body. A classic tube top typically measures 10–14 inches tall. Measure from just under your bust down to where you want the bottom to hit, and add a little extra for the top band if you plan to add one.

Optional — Adjustable Sizing: One of the best things about a ribbed tube top is that if your gauge swatch shows good stretch, you can get away with making the top quite a bit smaller than your measurements and letting the ribbing do the work. Many makers aim for the finished piece to be 80–85% of their actual bust measurement.

The Stitch: Back Loop Only Single Crochet

The foundation of this entire project is the back loop only single crochet (BLO SC). This is a standard single crochet stitch worked only into the back loop of the stitch below, leaving the front loop unworked. Those unworked front loops stack on top of each other as you work more rows, creating the raised ridges that give the fabric its ribbed, textured appearance.

If you’re not familiar with this stitch, here’s a quick breakdown. When you look at the top of any crochet stitch, you’ll see two loops forming a V shape. The loop closest to you is the front loop, and the loop farther from you is the back loop. To work BLO, simply insert your hook under only that back loop and complete your stitch as normal.

You can also use half double crochet BLO (HDC BLO) for a slightly taller, stretchier rib that many crocheters prefer for garments. The choice comes down to personal preference and the look you’re after.

Working The Pattern

There are two main approaches to crocheting a ribbed tube top: working it flat (as a rectangle) and then seaming, or working it in the round from the start. Both methods produce a great result. Working flat and seaming is generally easier for beginners because it’s simpler to count rows and maintain stitch consistency. Working in the round is slightly more advanced but eliminates the seam entirely.

This tutorial will walk you through the flat method, which is the most approachable for most skill levels.

Step 1: Starting Chain

Calculate your starting chain based on your gauge and your desired height of the top. Because you’ll be working the ribbing vertically (turning your work and working back and forth in rows), your starting chain will determine the HEIGHT of the top, not the width.

For example, if your gauge is 4 stitches per inch and you want a top that is 12 inches tall, you’ll need approximately 48 stitches in your starting chain. Add one or two extra chains as a turning chain depending on your stitch.

Chain your calculated number plus your turning chain. For single crochet, chain your number plus 1. For half double crochet, chain your number plus 2.

Step 2: Working Your First Row

Row 1: Starting in the second chain from the hook (for SC) or third chain from the hook (for HDC), work your chosen stitch across the entire chain. At the end of the row, chain 1 (for SC) or chain 2 (for HDC), and turn your work.

Step 3: Working In Back Loops Only

Row 2 onward: This is where the magic happens. Work your stitch across the row, but insert your hook into the back loop only of each stitch. Continue turning and working BLO stitches until your work has reached the desired width — meaning the circumference of your tube.

To calculate how many rows you need, use your row gauge. If your gauge is 4 rows per inch and you want a finished circumference of 32 inches, you’ll need approximately 128 rows. This sounds like a lot, but ribbed crochet works up quickly once you get into a rhythm, and the repetitive nature of the stitch makes it genuinely relaxing.

Step 4: Checking Your Width

Periodically lay your work out flat and measure the width. Remember that you’re working for the finished circumference of the tube, so the actual flat panel should be half of your desired circumference. In the 32-inch circumference example above, your flat panel should measure approximately 16 inches wide before seaming.

Step 5: Seaming

Once your panel has reached the desired width, fasten off and leave a long tail of yarn — at least 18–24 inches — for seaming. Fold the panel in half with right sides together (or outside facing out, depending on the seam method you prefer). Use a tapestry needle to whipstitch or slip stitch the two short edges together, creating a tube. Try to match up your rows as evenly as possible for the cleanest result.

If you prefer an invisible seam, the mattress stitch works beautifully on ribbed crochet fabric and creates a nearly invisible join.

Turn the tube right side out and you have the basic structure of your top.

Adding A Top Band (Optional But Recommended)

A raw edge at the top of a tube top can roll or feel unstable. Adding a simple band around the top edge will keep everything in place and give your top a polished, finished look.

To add a band, join your yarn at the seam of the top edge and work single crochet stitches evenly around the entire circumference of the top opening. You can work just one or two rounds of SC for a minimal edge, or you can work several rounds to create a thicker band that helps the top stay up.

Some makers add a picot edge, a shell border, or even a simple chain loop border to dress up the top edge. This is entirely optional and comes down to your personal style.

Repeat the same finishing for the bottom edge of the top.

Weaving In Your Ends

Use your tapestry needle to weave all remaining yarn tails securely through the wrong side of the fabric. Go back and forth through the stitches in a few different directions to make sure the ends won’t work their way out after washing. Trim any excess yarn close to the fabric.

Sizing Guide

Here’s a general reference for different sizes based on common gauge and standard body measurements. These are starting points — always make a gauge swatch and adjust accordingly.

For a small (28–32 inch bust), aim for a finished circumference of roughly 26–28 inches using the ribbing’s stretch to close the gap. Your flat panel will be approximately 13–14 inches wide. For a medium (33–37 inch bust), aim for a finished circumference of 30–32 inches, making your flat panel 15–16 inches wide. For a large (38–42 inch bust), aim for 35–38 inches circumference, with a flat panel of 17.5–19 inches wide. For an extra large (43–47 inch bust), aim for 40–43 inches circumference, with a flat panel of 20–21.5 inches wide.

These numbers assume a moderately stretchy yarn. If your yarn has very little stretch, reduce the negative ease or work with the circumference measurement rather than going significantly below it.

Tips For A Better Finished Top

Blocking your finished top can make a huge difference in the final look. Wet blocking — soaking the top in cool water, gently squeezing out excess water, and laying it flat to dry — will even out your stitches, improve the drape, and give everything a more professional finish. Most cotton and bamboo yarns benefit greatly from blocking.

Consistency is everything in ribbed crochet. Try to maintain the same tension throughout your rows. If you notice your stitches getting tighter or looser as you tire or relax, take breaks and check your work frequently.

If your top keeps sliding down when you wear it, try working a tighter row of single crochet around the top edge, or work one row through both loops at the top to lock in the edge and prevent stretching.

Don’t be afraid to experiment with color. A striped ribbed tube top worked in alternating colors is a showstopper, and because you’re just changing yarn at the end of rows, color changes are very simple to manage.

Common Mistakes And How To Fix Them

Working into the wrong loop is the most common beginner mistake with this stitch. If your fabric isn’t showing nice, defined ridges, double-check that you’re consistently inserting your hook under only the back loop. Lay your work flat and look closely — it should be obvious once you know what to look for.

Losing your stitch count is another frequent issue, especially over long rows. Use stitch markers every 10 or 20 stitches as placeholders, and count your stitches at the end of every row until you feel confident.

Uneven tension at row ends can create wavy edges. Make sure your turning chain is the correct height for your stitch and that you’re not pulling too tightly or too loosely at the beginning of each row.

Caring For Your Crocheted Tube Top

Most cotton and cotton-blend yarns are machine washable on a gentle cycle in cold water. Always check your yarn label for specific care instructions. Lay your top flat to dry rather than hanging it, which can cause the fabric to stretch out of shape over time. Avoid high heat in the dryer as it can cause cotton to shrink or stiffen.

Final Thoughts

Crocheting a ribbed tube top is one of those projects that teaches you a genuinely useful technique — back loop only stitching — while giving you a beautiful, wearable result at the end. Once you’ve made one, you’ll find yourself reaching for this skill again and again. The concept scales beautifully: use the same basic approach to make ribbed skirts, headbands, cuffs, and more.

Take your time with the gauge swatch, trust the stretch of your ribbing, and don’t be afraid to make adjustments as you go. Crochet garments are incredibly forgiving once you understand how the fabric behaves. Most of all, have fun with it — choose colors you love, a yarn that makes you happy to hold, and enjoy the process of making something you’ll actually wear all summer long.

Happy crocheting!