Ripple and Ridge Afghan Blanket: Free Knitting Pattern (With Video Tutorial)
If you’ve been searching for a cozy, textured blanket that looks impressive but works up faster than you might expect, the Ripple and Ridge Afghan is exactly what you need. This free knitting pattern combines two of the most satisfying knitting techniques — ripple stitch and ridge stitch — into a single blanket that flows beautifully across any couch, bed, or armchair. Whether you’re a confident beginner or an experienced knitter looking for a satisfying weekend project, this pattern has something to offer at every skill level.
In this post, you’ll find the complete free pattern, yarn and needle recommendations, stitch explanations, and a full video tutorial to walk you through every step. Bookmark this page, grab your yarn, and let’s get started.
Why You’ll Love This Afghan Pattern
There’s something timeless about a ripple blanket. The wave-like movement of the fabric catches the eye, and the ridges add just enough dimension to make the finished piece feel truly special. This particular pattern is designed to be meditative once you’ve learned the repeat — the kind of project you can pick up while watching television or chatting with friends, because your hands will quickly learn the rhythm on their own.
Beyond the aesthetic appeal, this blanket is genuinely practical. It’s thick enough to provide real warmth, but the openness in the ripple sections keeps it from feeling too heavy. It drapes beautifully, which means it looks just as lovely folded over a chair as it does spread across a bed. And because it’s worked flat in rows with no shaping, you never have to worry about complex construction techniques.
The finished blanket measures approximately 50 inches wide by 60 inches long using the recommended yarn and needles, making it a generous throw size that works well as a gift or a treasured piece for your own home.
Materials You’ll Need
Before you cast on, gather everything you’ll need so you can work without interruption.
Yarn: Approximately 1,400 yards of bulky weight yarn (US weight 5 or 6). A smooth, plied yarn works best for this pattern because it shows the ridge texture clearly. Good choices include Lion Brand Wool-Ease Thick & Quick, Paintbox Yarns Simply Chunky, or any worsted-to-bulky yarn you love working with. For a multi-color ripple effect, you can use three to five coordinating colors and switch every two rows, or you can work the entire blanket in a single color for a classic look.
Needles: US size 10.5 (6.5mm) circular needles, at least 40 inches long. You’ll be working flat (back and forth in rows), but the length of the cable gives your stitches room to spread out and makes it much easier to handle the full width of the blanket. Alternatively, straight needles at least 14 inches long will work if you prefer them.
Other supplies: A tapestry needle for weaving in ends, scissors, stitch markers if you’d like to mark your repeat sections, and a tape measure.
Gauge: 12 stitches and 16 rows = 4 inches in stockinette stitch. For a blanket, gauge is flexible — if your gauge is slightly off, your finished blanket will simply be a little larger or smaller than stated. That said, a significant difference in gauge will affect your yardage requirements, so it’s worth knitting a quick swatch if you’re working with an unfamiliar yarn.
Abbreviations Used in This Pattern
If you’re newer to reading knitting patterns, this list of abbreviations will help you decode the instructions as you go.
k — knit
p — purl
k2tog — knit two stitches together (a right-leaning decrease)
ssk — slip, slip, knit (a left-leaning decrease)
kfb — knit into the front and back of the same stitch (an increase)
m1 — make one stitch (a lifted increase)
RS — right side of work
WS — wrong side of work
rep — repeat
pm — place marker
sm — slip marker
st(s) — stitch or stitches
yo — yarn over
Understanding the Ripple and Ridge Stitch
Before diving into the pattern, it helps to understand how the two main elements work together.
The ripple portion of this blanket is created through a combination of increases and decreases placed in a regular, repeating sequence across the row. When you decrease two stitches at the valley of each wave and increase two stitches at the peak, the total stitch count stays consistent, but the fabric begins to undulate naturally. This is the same principle used in crochet ripple patterns, translated beautifully into knitting.
The ridge stitch is much simpler — it’s created by alternating knit rows with purl rows in a specific way that differs from standard stockinette. By purling on the right side of the work at regular intervals, you create raised horizontal ridges that run across the blanket. These ridges give the fabric its dimensional texture and create a lovely contrast with the smooth sections between them.
When you combine these two elements, the ridges follow the ripple motion of the fabric, so they rise and fall with the waves. This is the detail that makes this blanket look far more complex than it actually is. Once you knit a few repeats, you’ll see exactly how it all fits together.
Pattern Instructions
Cast On
Using the long-tail cast on method (recommended for a neat, elastic edge), cast on 147 stitches.
The stitch count is based on a repeat of 14 stitches, plus 3 stitches for the edge. Here’s the breakdown: (14-stitch repeat × 10) + 7 stitches = 147 stitches. If you’d like a narrower or wider blanket, you can adjust by adding or subtracting multiples of 14 stitches.
Foundation Row (WS)
Purl across all stitches. This sets up your work so that the right side is facing you for Row 1.
The Ripple and Ridge Repeat
The pattern is built on a 12-row repeat. Once you’ve worked all 12 rows, simply repeat them from Row 1 again until your blanket reaches the desired length.
Row 1 (RS — Ripple Setup Row): K3, k2tog, k4, kfb, kfb, k4, ssk; rep from to last 3 sts, k3.
Row 2 (WS): P3, p2tog tbl, p4, pfb, pfb, p4, p2tog; rep from to last 3 sts, p3.
Row 3 (RS): K3, k2tog, k4, kfb, kfb, k4, ssk; rep from to last 3 sts, k3.
Row 4 (WS): Purl all stitches.
Row 5 (RS — Ridge Row): P3, p2tog, p4, pfb, pfb, p4, p2tog tbl; rep from to last 3 sts, p3. (Note: Purling on the RS creates the ridge.)
Row 6 (WS): K3, k2tog, k4, kfb, kfb, k4, ssk; rep from to last 3 sts, k3. (Note: Knitting on the WS continues the ridge texture.)
Row 7 (RS): P3, p2tog, p4, pfb, pfb, p4, p2tog tbl; rep from to last 3 sts, p3.
Row 8 (WS): Purl all stitches.
Row 9 (RS): K3, k2tog, k4, kfb, kfb, k4, ssk; rep from to last 3 sts, k3.
Row 10 (WS): P3, p2tog tbl, p4, pfb, pfb, p4, p2tog; rep from to last 3 sts, p3.
Row 11 (RS): K3, k2tog, k4, kfb, kfb, k4, ssk; rep from to last 3 sts, k3.
Row 12 (WS): Purl all stitches.
Repeat Rows 1 through 12 until the blanket measures approximately 58 inches from the cast-on edge, or until you’ve reached your desired length. End after completing a Row 12 for the cleanest finish.
Bind Off
With the right side facing, work a stretchy bind off. A good option is the k2tog bind off: knit two stitches together, slip the resulting stitch back to the left needle, and repeat across. This creates a bind-off edge that has the same elasticity as the long-tail cast-on edge, giving your blanket a polished, balanced look.
Color Options and Yarn Substitution Tips
One of the best things about this pattern is how well it adapts to different color approaches. Here are a few popular options.
A single solid color lets the texture do all the talking. This is particularly stunning in a heathered or tweed yarn where the slight color variation adds visual interest without competing with the stitch pattern.
A two-color stripe works beautifully if you alternate colors every two rows (or every 12-row repeat). The stripes follow the ripple movement and create a dynamic, graphic effect.
A gradient yarn or a carefully sequenced set of coordinating colors gives you an ombré effect that many knitters find absolutely addictive. Start with your darkest shade and gradually work toward the lightest, or reverse the sequence for a different look.
When substituting yarn, aim to stay within the same weight category and fiber content. Wool and wool-blend yarns block beautifully and tend to show the ridge texture most clearly. Acrylic yarns are machine washable and an excellent choice if the blanket is going to a household with children or pets. Cotton and cotton blends are heavier and less stretchy, which can make the ripple effect look slightly different, but they work well for a summer throw.
Finishing Your Blanket
When you’ve completed the final row and worked your bind off, you’ll have a blanket that may look slightly uneven at the edges — this is completely normal and expected with ripple patterns. Blocking is what brings everything together.
To block your blanket, fill a bathtub or large basin with lukewarm water and a small amount of wool wash or gentle soap. Submerge the blanket and gently press it (do not wring or twist) to allow the fiber to absorb the water fully. Let it soak for about 20 minutes, then carefully lift it out and press out as much water as possible by rolling it in a clean towel.
Lay the blanket flat on a blocking surface — a foam mat, a clean carpet, or even a bed covered with a waterproof pad — and use rust-proof pins to stretch and shape it to the finished dimensions. Pin along the top and bottom edges, gently stretching the ripple points into their full, open wave shapes. Leave it to dry completely, which may take 24 to 48 hours depending on your environment.
Once dry and unpinned, your blanket will be dramatically transformed. The ripple pattern opens up beautifully, the ridges become more defined, and the overall drape of the fabric softens significantly. This is the moment when knitters typically feel very glad they put in the extra effort.
Weave in all your ends using a tapestry needle, being sure to secure them well since the ripple motion can put some stress on loose ends over time.
Video Tutorial
If any part of the written pattern feels unclear, the video tutorial that accompanies this post walks you through every step from cast on to bind off. You’ll see close-up demonstrations of the k2tog and ssk decreases, the kfb increase, how to work the ridge rows on the right side of the fabric, and how to switch colors cleanly if you’re working a striped version. The video also covers blocking in real time so you can see exactly what to expect from that process.
The tutorial is designed to be paused and rewatched as often as you need — feel free to follow along stitch by stitch at whatever pace works for you.
Tips for Knitting Success
A few practical notes from knitters who’ve made this blanket will save you time and frustration along the way.
Count your stitches at the end of every row, at least for the first few repeats. The increases and decreases should always balance out to the same stitch count you started with — 147 stitches in this case. If you find yourself with extra or missing stitches, it’s easy to catch and fix while the error is still close.
Use stitch markers to divide your work into repeat sections. Place a marker after every 14 stitches across the setup row, and slip each marker as you pass it. This makes it much easier to spot mistakes and keeps your place in the repeat.
If you’re knitting in multiple colors, carry the unused yarn up the side rather than cutting and rejoining at every stripe. This reduces the number of ends to weave in and keeps the side edges neat. Simply twist the working yarn around the carried yarn every couple of rows to catch it against the edge.
Give yourself permission to take the first pattern repeat slowly. Many knitters find that the first 12 rows feel a little unfamiliar, the second repeat starts to feel comfortable, and by the third or fourth repeat the rhythm has become second nature. Don’t judge the pattern or your own skill level too quickly in those first rows.
Gifting This Blanket
A handknitted blanket is one of the most personal and generous gifts you can give, and the Ripple and Ridge Afghan is particularly well suited to gifting. The wave motif carries associations of warmth, flow, and continuity that resonate with many people. It’s a wonderful choice for weddings, baby showers (knit in a lighter weight yarn for a smaller, softer version), housewarmings, and milestone birthdays.
If you’re giving the blanket as a gift, consider attaching a small card with the fiber content and care instructions. Handknitted items deserve to be washed and stored properly, and most recipients are grateful for that guidance.
A Note on Making This Pattern Your Own
The written pattern here is a starting point, not a rigid prescription. Once you’re comfortable with the ripple and ridge rhythm, there are many ways to make this blanket uniquely yours. You might add a simple seed stitch border to frame the ripple beautifully, or substitute a yarn over increase for the kfb to create a slightly lacier look in the peaks of the waves. You might scale it up to a full bed blanket by adding more repeats, or scale it down to a baby blanket or lap throw.
Knitting is one of the few crafts where personalization is genuinely built into the process. Every knitter’s tension is slightly different, every yarn behaves in its own way, and every finished object carries the character of the person who made it. This pattern gives you the framework — everything else is yours to discover.
Final Thoughts
The Ripple and Ridge Afghan is the kind of pattern that tends to stay in a knitter’s repertoire for years. It’s satisfying to make, stunning to look at, and practical enough to use every single day. It scales to any size, adapts to any color palette, and works beautifully in a wide range of yarns. Whether you’re making it for yourself or someone you love, you’ll find that the process of knitting those rhythmic waves is every bit as enjoyable as the finished blanket itself.
If you make this pattern, share a photo in the comments or tag it on social media — seeing your finished versions is one of the genuine joys of sharing a pattern like this. Happy knitting!
