Corner-to-Corner Counter
Track diagonal rows and blocks.
How Corner-to-Corner Counter Works?
The Corner to Corner Counter works by counting Diagonal Row and Tile Blocks in Row for the blocks in the current diagonal. Corner to corner (C2C) crochet grows on the diagonal, adding 1 block per row until the widest point, then losing 1 block per row.
Start at the corner
Row 1 holds 1 tile block: ch 6, dc in 4th ch from hook and next 2 ch.
Count the blocks
Press → for each block in the row.
Advance the row
Tap the count pad or press Space at the end of each diagonal row.
Switch to decreasing
Start decreasing after the row that reaches the full width.
Corner-to-Corner Counter Formula
The Corner to Corner Counter formula for a square is total rows = 2 × side − 1. Row n holds n blocks while increasing and (2 × side − n) blocks while decreasing.
- Total rows (square)
Rows = 2s − 1s is the side length in blocks.
- Blocks in row (rising)
B = nn is the Diagonal Row.
- Blocks in row (falling)
B = 2s − nUse for rows after row s.
Worked example: A 40 × 40 block C2C blanket takes 2 × 40 − 1 = 79 diagonal rows and holds 1,600 blocks.
Corner-to-Corner Counter Conversion Table
The Corner to Corner Counter conversion table converts block counts into rows and size in worsted yarn.
| Side (blocks) | Diagonal rows | Total blocks | Size (worsted, 0.75 in/block) |
|---|---|---|---|
| 10 | 19 | 100 | 7.5 in (19.1 cm) |
| 20 | 39 | 400 | 15 in (38.1 cm) |
| 30 | 59 | 900 | 22.5 in (57.1 cm) |
| 40 | 79 | 1,600 | 30 in (76.2 cm) |
| 50 | 99 | 2,500 | 37.5 in (95.2 cm) |
| 60 | 119 | 3,600 | 45 in (114.3 cm) |
| 70 | 139 | 4,900 | 52.5 in (133.3 cm) |
Rectangles increase until the short side, then increase on one edge and decrease on the other.
What is Corner-to-Corner Counter?
A Corner to Corner Counter is a counter that tracks diagonal rows and tile blocks in C2C crochet. C2C builds the fabric from one corner to the opposite corner in small square blocks.
Pixel art charts map 1 square to 1 block. Counting blocks in each row keeps the picture in place.
The Stitches Counter tool saves the row and block counts in your browser.
What are the uses of Corner-to-Corner Counter?
There are 4 main uses of the Corner to Corner Counter, including pixel blankets, cushions and wall hangings.
Pixel blankets
Follow graph charts for pictures and letters.
Cushions
Make C2C squares for pillow covers.
Wall hangings
Make small C2C art pieces.
Plain C2C
Make solid or striped C2C blankets.
About the Corner-to-Corner Counter
Count C2C diagonal tile blocks through increase rows to the center diagonal, and down through decrease rows to the final corner.
How to Use This Tool Efficiently
- ✓Rows increase by 1 tile block until you reach the widest diagonal corner.
- ✓Switch to corner decreases when one dimension reaches your desired blanket edge length.
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