Note: This is Version 3 of my Sock Formula, with a square (Dutch) heel, and the heel flap worked on the approximately half the number of ankle sts. This version also has a toe decreased to about 50% of the body stitches.
If you enjoy making your own socks, the chart below might be of help. I got tired of calculating and recalculating every time I made a new pair of socks, so I decided to put it all into a chart that I can refer to when needed. It's based on the fact that I use a set of four double pointed needles (not circulars), since I tend to think in a "first needle, second needle, last needle" fashion.
Below is a set of basic stitch and row numbers for socks, depending on the number of stitches you cast on. You can use it as a starting point for designing your own socks in various sizes and yarn types. Instructions have been added so it's not too confusing.
If you'll be using stocking stitch or any stitch pattern other than ribbing, and need:
28 32 36 40 44 48 52 56 60 64Cast on about:
22 26 28 32 36 38 42 44 48 52stitches.
28 32 36 40 44 48 52 56 60 64stitches. You can adjust this number up or down by a stitch or two to make it work with your chosen stitch pattern. Work leg of sock in desired pattern for desired length.
14 16 18 20 22 24 26 28 30 32stitches for
18 20 22 24 26 30 32 34 36 38rows, end right side facing. Leave other stitches on a separate needle for instep, to be worked again later.
10 11 12 13 14 15 16 17 18 19stitches, k2tog, turn. *Sl1, work 6 stitches, k2 tog tbl, turn. Sl1, work 6 stitches, k2tog, turn.* Repeat between *'s til 8 stitches remain on needle, right side facing ready to work next row.
10 11 12 13 14 15 16 17 18 19stitches along heel flap. Pick up one stitch in the space between the first and second (instep) needle, knit across middle needle, pick up a stitch in the space between the second and third needle. Pick up same number of stitches along other side of heel flap. Knit 4 sts from first needle onto last needle.
28 32 36 40 44 48 52 56 60 64stitches remain in round.
12 12 16 16 20 20 24 24 28 28sts remain, ending with a decrease round. Knit sts from first needle onto third needle.