Crochet bikini patterns are one of the most rewarding summer makes — a handmade swimsuit that feels custom, wears beautifully, and gets endless compliments at the beach or pool. The most common question is whether you can actually swim in a crocheted bikini, and the honest answer is yes, as long as you pick the right fiber (a tight-gauge cotton or a stretchy swimwear blend) and always add a lining under the cups and bottoms. From there, it is all about picking a style you love.
This roundup gathers 21 free crochet bikini patterns spanning tops, bottoms, and full sets — triangle, halter, bandeau, bralette, high-waist, cheeky, monokini, and thong silhouettes — with beginner-friendly picks alongside intermediate showstoppers. Cup sizes range from A to G and body sizes from XS to 5XL, so there is something for every shape. Pair any of these with one of our beach cover up crochet patterns and you have a full handmade poolside look ready to go.
Table of Contents
- Bikini Tops
- 1. Classic Triangle Bikini Top
- 2. Rainbow Crochet Bikini Top
- 3. Simply Cute Crochet Bikini Top
- 4. Sunday Morning Bralette
- 5. The Weekend Getaway Bikini Top
- 6. Basic Beginner Bralette
- 7. Spring Valley Bandeau
- 8. Oh My Bikini
- 9. Ariel Bikini Top
- 10. Vega Bikini Top
- 11. Easy Like Sunday Bikini Top
- Bikini Bottoms
- 12. Rochelle Cheeky String Bikini Bottom
- 13. Candy Twist High-Waist Bikini Bottom
- 14. Vibrant Crochet Bikini Bottom
- 15. Sunday Bikini Bottom
- 16. Vega Bikini Bottom
- Full Sets & One-Pieces
- 17. Green Bikini Two-Piece Set
- 18. Sassy Summer Bikini Set
- 19. Colorful Bikini Set
- 20. Wicked Good Thong Bikini
- 21. Patons Bikini Set
- Frequently Asked Questions
Bikini Tops
1. Classic Triangle Bikini Top
Noelebelle’s Classic Triangle Bikini Top is the quintessential summer starter — a simple two-triangle silhouette worked in worsted cotton with adjustable neck and back ties. It is graded XS through XL, uses only basic stitches, and can be finished in a few hours. A perfect beginner confidence builder or a quick top to whip up before a beach weekend.
2. Rainbow Crochet Bikini Top
Tasha Margette of Stardust Gold Crochet designed this cheerful halter-style top with rainbow stripes and a delicate lace border across the bottom. The DK-weight cotton and adjustable sizing make it beginner-friendly, and there is a full step-by-step video walkthrough if you learn best by watching. Great for festival season or a colorful pool day.
3. Simply Cute Crochet Bikini Top
Taylor Lynn’s Simply Cute Bikini Top lives up to its name — it uses only chain and basic stitches, one skein of worsted cotton, and finishes in an afternoon. Adjustable neck and back ties let you size it exactly to your measurements, making it a wonderful project for a first crochet swimsuit or a fast handmade gift.
4. Sunday Morning Bralette
Nina Noel of Noelebelle designed this size-inclusive bralette (XS–5XL) with thicker straps that cinch securely and a dainty trim along the edges. Worked in worsted cotton with a full video tutorial, it doubles beautifully as a bikini top with a lining added. If you like the crossover between swim and everyday styling, our summer top crochet patterns collection has plenty more bralettes and halters worth browsing.
5. The Weekend Getaway Bikini Top
Jane at Jenny & Teddy designed this quick top with basic stitches, a decorative lace edging along the bottom, and adjustable sizing options. It is worked in Lion Brand Coboo, a cotton-bamboo blend that drapes softly against the skin. A video tutorial is included, and the whole project comes together in a single afternoon.
6. Basic Beginner Bralette
Pam Carr of Carroway Crochet built this bralette almost entirely from double crochet, with customizable cup and bodice lengths that make it easy to shape for swim wear. It works up in a day using worsted cotton, and the tutorial explains exactly how to grade it to your bust and torso measurements. A perfect stepping stone from bralette to bikini top.
7. Spring Valley Bandeau
Janine Myska’s Spring Valley Bandeau is a strap-free strapless top with a simple stitch pattern gathered by decorative ruching down the front. Written as a customizable tutorial, it can be graded to any size and worked in fingering-weight cotton for a lightweight, breathable finish. Ideal for those who want a modern, minimalist swim look.
8. Oh My Bikini
Another beginner-friendly design from Jenny & Teddy, this triangle bikini top uses single crochet worked in the back loop only for a smooth, subtly ribbed texture. The pattern comes with a size 8 template and clear customization notes so you can adjust to your own measurements. Quick, clean, and endlessly wearable.
9. Ariel Bikini Top
Maya Kuzman’s Ariel Bikini Top is a triangular top with three cups worked in delicate treble shells and finished with picot edging. Sized S–L in cobalt-green cotton, it reads as boho-mermaid and would be gorgeous layered over a lined bandeau for extra coverage. This one is intermediate — the shells reward a bit of stitch focus with a truly special finished piece.
10. Vega Bikini Top
The Happy Unraveler designed this shaped bikini top with increases and decreases that build a proper curved cup, plus separately attached adjustable straps. Sized XS through XXL and worked in DK cotton, it comes with a video walkthrough that makes the shaping easy to follow. Pair it with the matching Vega bottom (#16) for a coordinated set.
11. Easy Like Sunday Bikini Top
What About Yarn’s Easy Like Sunday Bikini Top is a triangle-shaped top with sculpted cups and adjustable straps, worked in fine fingering-weight cotton for a delicate summer finish. It is designed to pair perfectly with the matching Sunday bottom (#15), and there is a video tutorial to walk you through every step. A beautiful choice for a lightweight, breathable set.
Bikini Bottoms
12. Rochelle Cheeky String Bikini Bottom
Shaz of The Knotty Lace designed this cheeky-cut string bikini bottom worked in one piece from front to back with side ties. It is sized XS through 5XL and paired with rubber-band elastic for real swim-worthy stretch. A full video tutorial is included, and the whole project finishes in under a few hours in DK cotton.
13. Candy Twist High-Waist Bikini Bottom
Another gem from The Knotty Lace, this stretchy high-waisted bottom is worked in half double crochet with a distinctive twisted-loop top band that adds vintage character. Available in nine sizes and finishing in under two hours, it is a great retro-leaning pairing for a triangle or halter top. Video tutorial included.
14. Vibrant Crochet Bikini Bottom
Taylor Lynn’s Vibrant Bikini Bottom is a customizable high-rise bottom with fold-over elastic casing at the waist and legs, plus an optional scrunch-back detail. It is worked in DK cotton, sized adjustably from the tutorial notes, and welcoming to advanced beginners. A fun way to add a modern high-rise silhouette to your handmade swim collection.
15. Sunday Bikini Bottom
From What About Yarn, this simple bikini bottom is worked to your own measurements for a truly personalized fit. Fingering-weight cotton keeps it lightweight and quick-drying, and a video walkthrough guides you through the shaping. Pairs seamlessly with the Easy Like Sunday Top (#11) for a coordinated handmade set.
16. Vega Bikini Bottom
The Happy Unraveler’s Vega Bottom is built side-to-side using basic increases and decreases, which makes it wonderfully easy to customize with different edging, filet inserts, or stitch variations. Six sizes (XS–XXL) and a video walkthrough make it accessible for confident beginners. Pair with the matching Vega Top (#10) for a full set.
Full Sets & One-Pieces
17. Green Bikini Two-Piece Set
Leyla Alieva of Silk & Wool designed this two-piece set with shaped crochet cups and matching bottoms in Alize Diva microfiber. Elastic thread woven throughout the fabric gives it swim-ready structure and quick-drying performance — one of the most swimwear-appropriate free patterns in the roundup. Intermediate crocheters will appreciate the tailored cup construction.
18. Sassy Summer Bikini Set
Nadia Fuad of YARNutopia designed this full-coverage two-piece with a high-waisted bottom and matching top — a strong pick for anyone who wants more coverage than a triangle bikini offers. The repeating stitch pattern is easy to scale up or down for any size, and there is a video tutorial to walk you through both pieces. A confident intermediate project with lots of retro charm.
19. Colorful Bikini Set
Jane at Beautiful Crochet Stuff designed this vibrantly striped two-piece featuring yellow, turquoise, and pink bands separated by crisp white ties. Full row-by-row instructions cover both the top and bottom in sizes XS through L, worked in fingering-weight cotton for a delicate finish. A statement-making set for anyone who loves bold color.
20. Wicked Good Thong Bikini
Sandi Hagan’s Wicked Good Thong Bikini is a multi-size set worked in thread-weight yarn for a delicate, festival-ready finish. The thong-style bottom paired with the tie top gives a bold, minimalist silhouette — perfect for sunbathing or a poolside cocktail. Available as a free downloadable PDF via LoveCrafts.
21. Patons Bikini Set
Designed by the Patons studio, this lightweight two-piece set is worked in Patons Grace mercerized cotton for a classic beach look with a soft sheen. The free PDF downloads without any signup required, and the pattern reads clearly enough for adventurous beginners. A polished, evergreen set with real designer-brand backing.
Frequently Asked Questions
Can you actually swim in a crochet bikini?
Yes — with the right fiber choice and a lining. Cotton at a tight gauge or a synthetic swimwear-friendly blend (like Cascade Fixation or Alize Diva Stretch) will hold shape best. Cotton does stretch and get heavier when wet, so plan for the fit to relax slightly in the water. Always line the cups and bottom for coverage and to keep the stitches from stretching.
What is the best yarn for a crochet bikini?
Lightweight cotton is the go-to for breathability and easy washing, and it dries relatively quickly on a warm day. For extra stretch and shape retention, blends with elastic like Cascade Fixation or Alize Diva Stretch are excellent. Skip pure acrylic — it retains water, sags, and warps in the sun.
How do you line a crochet bikini top?
Cut swimwear lining fabric or nude jersey to match the shape of your crocheted cups, then hand-stitch it to the wrong side around the edges. This prevents transparency, adds coverage, and keeps the crochet stitches from stretching under wet weight. For bottoms, cut a lining panel to match the front piece and secure it the same way before joining seams.
Are crochet bikini patterns beginner-friendly?
Many are. Simple triangle tops, bandeaus, and string bottoms typically use only chain, single crochet, and half double crochet — great beginner projects. Full matching sets, motif-based tops, and patterns with shaped cups tend to sit at intermediate level, so start with a triangle or bralette if you are new to crochet swimwear.
How long does it take to crochet a bikini?
A simple triangle top can finish in three to five hours, while a full matching set usually takes a weekend to a full week depending on how detailed the stitchwork is. Fingering-weight patterns take longer than DK or worsted, so factor yarn weight into your planning if you have a beach trip on the calendar.
Which of these crochet bikini patterns caught your eye? Save your favorites to Pinterest so they are easy to find when you cast on, and share photos of your finished bikinis — nothing beats seeing a handmade swimsuit hit the sand for the first time.
