Crochet Bikini: The Complete Guide
Looking to crochet your own bikini? You’re in the right place. This is the most comprehensive crochet bikini hub on the web — featuring free patterns for every body, yarn recommendations tested in real pools and saltwater, fit guides from XS to 5XL, beginner tutorials, and answers to every question you might have. Whether this is your first bikini or your fiftieth, you’ll find what you need below.
Quick Navigation
- Free Crochet Bikini Patterns by Style
- Best Yarn for Crochet Bikinis
- Sizing Guide (XS to 5XL)
- How to Crochet Your First Bikini
- Crochet Bikini FAQ
- Yarn Calculator
- Related Guides
Free Crochet Bikini Patterns by Style
Browse our complete library of free crochet bikini patterns. Every pattern below includes XS to 5XL sizing, written instructions, and a video tutorial.
Bikini Tops
Bikini Bottoms
- Cheeky Bikini Bottom — beginner-friendly free pattern
- High-Waist Bikini Bottom — flattering retro fit
- How to Crochet a Bikini Bottom in Any Size (XS-5XL)
Complete Sets & Swimsuits
- 20 Free Crochet Bikini & Swimsuit Patterns — one-piece and two-piece
- How to Crochet a Complete Bikini — beginner guide
By Body Type
Every pattern on The Knotty Lace includes XS through 5XL sizing built in — you don’t need to scale up or do the math yourself. Plus-size shaping notes, bust support tips, and tie-strength upgrades are included in each pattern.
Best Yarn for Crochet Bikinis
The wrong yarn ruins a swim-safe bikini. After testing 10+ cottons and cotton blends in both pool and saltwater, here’s the short version: stick to mercerized cotton or cotton-nylon DK weight for stretch, shape retention, and quick drying. Avoid acrylic (it absorbs water and sags) and wool (it felts).
Full breakdown with side-by-side wear tests: Best Yarn for Crochet Bikinis & Swimsuits — 2026 Cotton Comparison
Sizing Guide (XS to 5XL)
Every Knotty Lace crochet bikini pattern is graded across nine sizes (XS, S, M, L, XL, 2XL, 3XL, 4XL, 5XL). Use the size chart below to find your size based on bust and hip measurements, then follow the pattern’s size column for your stitch counts.
| Size | Bust (in) | Hip (in) |
|---|---|---|
| XS | 30-32 | 33-35 |
| S | 33-34 | 36-37 |
| M | 35-37 | 38-40 |
| L | 38-40 | 41-43 |
| XL | 41-44 | 44-47 |
| 2XL | 45-48 | 48-51 |
| 3XL | 49-52 | 52-55 |
| 4XL | 53-56 | 56-59 |
| 5XL | 57-60 | 60-63 |
How to Crochet Your First Bikini — Step by Step
Never made a bikini before? Start here. The complete beginner walkthrough covers yarn selection, hook size, swatching, top construction, bottom construction, ties, lining, and finishing.
Read the full beginner tutorial: How to Crochet a Bikini — Complete Beginner Guide
Crochet Bikini FAQ — Quick Answers
What yarn is best for a crochet bikini?
100% cotton or cotton-nylon DK weight. Cotton holds shape, dries reasonably fast, and feels good on skin. Avoid acrylic (gets heavy when wet) and wool (felts).
Are crochet bikinis safe to swim in?
Yes — when made with the right yarn and lined properly. Use cotton, line critical areas with swimwear fabric, and test in a pool before saltwater.
Can a beginner crochet a bikini?
Yes. Start with a triangle top + tie-side bottom — both use only basic single and double crochet stitches. Look for the “Beginner Friendly” tag on each pattern.
25 more answers — yarn, sizing, swim-safety, lining, hook size, fade resistance: Crochet Bikini & Swimsuit FAQ — 25 Answers
Yarn Calculator — How Much Yarn Do I Need?
Most adult crochet bikinis need 400-800 yards of DK weight cotton. Plus sizes need 600-1,000 yards. For an exact estimate based on your measurements, stitch density, and pattern, use the free yarn calculator below.
Calculate your yardage: Free Yarn Calculator — How Much Yarn Do I Need?
