Classic Letter B Knitting Pattern
This pattern was originally published in 2019. It has been fully updated for 2026 with a new high-resolution chart, revised instructions and project summary.
Every library needs a cornerstone, and the Classic Letter B is exactly that. Whether you’re knitting a traditional monogrammed throw or a personalized baby blanket, this block offers a timeless silhouette that never goes out of style.
As part of our 2026 Library Renovation, I’ve given this essential letter a premium polish. While it remains true to the 52SP Standard (43×63 stitches) you’ve used for years, the instructions are now clearer and the chart has been upgraded to our high-contrast format. It’s the same reliable ‘B’ you love, now presented with the clarity your projects deserve.
| Project Detail | Requirement |
| Skill Level | Beginner (only knits and purls) |
| Yarn Weight | DK or Worsted |
| Needle Size | 4mm / US 6 (and 4.5mm / US 7 for casting on and binding off stitches) |
| Finished Size | 8.5” x 8.5” (22 cm x 22 cm) |
Materials & Tools for the classic letter B block
- Yarn: 70 yds (64 m) of DK yarn (8 ply). OR 140 yds (128 m) of light fingering yarn (approx 3 ply) USED DOUBLE.
- Needles: 4mm / US 6 (and 4.5mm / US 7 for casting on and binding off stitches).
- Tools: tapestry needle for weaving in yarn ends, scissors.
- Gauge: 21 sts x 28 rows in stocking st with US 6 (4 mm needles) and DK yarn = 4” x 4” (10 cm x 10 cm)
NOTE: You can change the yarn weight and needle size to obtain different sized blocks. Let me know in the comments if you need help!
Classic Letter B: Knitted alphabet square instructions
Abbreviations:
- CO: cast on
- RS: right side
- WS: wrong side
- st(s): stitch(es)
- k: knit
- p: purl
The Pattern: General Instructions
- Cast on sts
CO 43 sts with US 7 (4.5 mm) needles.
I always cast on and bind off stitches with larger needles than I use for the main work. This prevents my cast on and bind off rows from being too tight. - Garter stitch bottom border
With US 6 (4 mm) needles, knit 4 rows.
Slip first stitch on every row as if you were to knit it, but without knitting it (except on the first row). It will form a neat and sturdy border. - Main pattern with garter stitch side borders
Continue working the next 55 rows as follows:
4 garter sts, B knitting pattern over 35 sts, 4 garter sts
You can follow either the row-by-row written instructions or the chart below for the B knitting pattern. - Garter stitch top border
Knit 4 rows.
- Bind off
Bind off all sts with a US 7 (4.5 mm) needle. Cut yarn and weave in ends.
- (Optional) Blocking
Block your square to its final measures.
Classic Letter ‘B’ Knitting Pattern: Row-by-Row Instructions
Row 1) and every following odd row (RS): Knit all stitches
Row 2) Purl all stitches
Row 4) Purl all stitches
Row 6) p1, k24, p10
Row 8) p1, k27, p7
Row 10) p1, k30, p4
Row 12) p1, k32, p2
Row 14) p3, k6, p16, k9, p1
Row 16) p3, k6, p19, k6, p1
Row 18) p3, k6, p19, k6, p1
Row 20) p3, k6, p19, k6, p1
Row 22) p3, k6, p16, k8, p2
Row 24) p3, k28, p4
Row 26) p3, k27, p5
Row 28) p3, k26, p6
Row 30) p3, k27, p5
Row 32) p3, k28, p4
Row 34) p3, k6, p16, k8, p2
Row 36) p3, k6, p19, k6, p1
Row 38) p3, k6, p19, k6, p1
Row 40) p3, k6, p19, k6, p1
Row 42) p3, k6, p16, k9, p1
Row 44) p1, k32, p2
Row 46) p1, k30, p4
Row 48) p1, k27, p7
Row 50) p1, k24, p10
Row 52) Purl all stitches
Row 54) Purl all stitches
Row 55) Knit all stitches
Classic Letter ‘B’ Knitting Chart
- Read all odd rows from right to left, and all even rows from left to right.
💡Note & Tip: These charted instructions represent the 35-stitch design area. Remember to work your 4-stitch garter borders at the beginning and end of every row. I recommend using stitch markers to separate the borders from the main design area.
B is for… Bear, Butterfly, and Bunny!
If you are looking for more blocks, check these three from The Animal Kingdom:
Planning a Blanket?
You might find useful our guide on How to Join Knitted Squares!
Download the Printable PDF
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You can also buy this pattern in Ravelry.
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