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C2C Diagonal Stitch Count Calculator
Planning a C2C blanket? Tell us your chart dimensions — we'll give you the diagonal row count, total tiles, and total stitch count without manual counting.
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How c2c diagonal counting works
Corner-to-corner (c2c) crochet doesn't grow row by horizontal row — it grows on the diagonal, one tile (chart square) at a time, starting from a single corner. You add a tile to the end of each diagonal pass until you reach the widest point, then you start decreasing to bring the fabric back to the opposite corner. Because of that, the number of rows you actually work is the number of diagonals, which is width + height − 1 — not the chart's height. A 40-tile-wide, 30-tile-tall chart is 69 diagonal rows, even though it's only 30 tiles tall. That gap between "chart height" and "rows worked" is exactly what trips people up when they estimate how much work (and yarn) a c2c project needs.
Stitches per tile
The standard c2c tile is a double-crochet block — 3 stitches per tile — which is the default here. For a denser, smaller fabric, mini-c2c uses half-double crochet (2 stitches per tile) or single crochet (1 stitch per tile). Pick the stitch your pattern specifies: it doesn't change the tile count or the diagonal row count, but it scales the total stitch count, which is what matters for yarn estimation.
Tips for an accurate count
- Width and height are chart squares (tiles), not stitches — count the squares in your graph, not the individual stitches.
- For yarn estimation, multiply the total stitch count by your yards-per-stitch to get a rough yardage.
- Diagonal rows grow from 1 up to min(width, height) — the shorter side, which is the longest diagonal the work reaches — hold there, then decrease back down. The total number of diagonal rows is always width + height − 1.
- Pair this with the stitch aspect ratio calculator if your tiles aren't square and you need to compensate so the design isn't stretched.