One of the most common pitfalls in crochet is following a pattern without realizing which country's terminology the designer used. Because the US and UK use the exact same words—like double crochet and treble crochet—to describe entirely different stitch heights, mistaking one for the other will double the size of your project or cut it in half, completely ruining your gauge and drape.
The root of the difference is simple: US terminology names stitches by the number of yarn-overs/loops pulled through, whereas UK terminology names stitches by the number of loops on your hook after the first yarn-over. As a result, UK stitch names are always shifted one step higher than their US counterparts.
US vs. UK Stitch Translation Infographic
Use the visual cheat sheet below to see direct equivalents at a glance:
Complete Crochet Stitch Conversion Table
The table below provides full abbreviations, stitch actions, and comparative heights for each stitch family:
| US Term | US Abbr. | UK Term | UK Abbr. | Initial Loops on Hook | Stitch Height (Ch Equivalent) |
|---|---|---|---|---|---|
| Slip Stitch | sl st | Slip Stitch | ss / sl st | 1 loop | 0 chains |
| Single Crochet | sc | Double Crochet | dc | 2 loops | 1 chain |
| Half Double Crochet | hdc | Half Treble Crochet | htr | 3 loops | 2 chains |
| Double Crochet | dc | Treble Crochet | tr | 2 loops (post-yo) | 3 chains |
| Treble / Triple Crochet | tr | Double Treble Crochet | dtr | 3 loops (post-2 yo) | 4 chains |
| Double Treble Crochet | dtr | Triple Treble Crochet | trtr | 4 loops (post-3 yo) | 5 chains |
How to Tell Which Terms a Pattern Uses
Many vintage or independent patterns omit stating their terminology upfront. When checking a pattern, look for these three unmistakable clues:
- Search for "Single Crochet" (sc): If the pattern lists
scin the stitch abbreviation key or instructions, it is strictly US terms. UK crochet starts at double crochet. - Check the Tension / Gauge wording: UK and Commonwealth designers often refer to gauge as tension (e.g., "Tension: 18 sts to 10 cm"), use metric millimeter hook measurements without US letters, and use British spellings like colour or grey.
- Inspect the turning chain counts: If a granny square or row instructs you to chain 3 and then work a round of stitches called trebles, it is using UK terms (where a treble equals a US double crochet, which requires a ch-3 turning chain). In US terms, a true treble requires chaining 4.
If you also need to convert hook letters or numbers, check our Crochet Hook Size Chart or use our interactive Needle & Hook Size Converter.