Monday, is the Official Cast On for the Knee Sock Knit A Long. That means I’d better tell people how to measure for their sock!
First, a reminder to create your sock pattern, visit the Hourglass Knee Sockulator. You will need to know some measurements to create a sock that fits you. At the sockulator, I show the locations to measure are shown on a flat sock, but some of you may want to see on an actual sock. So, here I am modeling the sock.
To fully design your sock will need to know six things about your foot and sock, so measure and write these down:
- Foot length: The sock you knit will have a “foot length” equal to the number you enter for the foot length.
Most people like this to match their actual foot length measured from the tip of their toe to the back of their heel; see blue arrow to the right. The easiest way to measure this is to step on a piece of paper and trace an outline your foot. Then, measure the length from the toe to the back of the heel. Note: You can also get the program to guess this value by entering your shoe size using the pulldown menu.
- The foot circumference: The sock you knit will have a “foot circumference” equal to this value. That is to say, the foot portion will form tube with this circumference.
Most people like this value to be 10% less than their actual foot circumference. So, wrap a tape measure around the thickest part of your foot and measure; see the green curved line to the right. Then, subtract 10% from that value.
Where is the thickest part of the foot you ask? For some people, this is around the instep; for others, around the ball of the foot. To find out, measure both. Note: You can also get the program to guess the appropriate value by entering your shoe size.
- Ankle circumference: Nearly all sock patterns are designed so the ankle and foot circumference match. If you’ve never knit a sock before, enter your foot circumference for this value. However, if you know you have very narrow ankles or very wide ankles compared to your foot, measure around your ankle, then subtract 10%. Enter that.
I should warn you: This adjustment is most valuable if you need loose ankles on your sock. It can be dangerous if you try to make the ankle too tight. If you think your ankles are teeny-tiny, don’t go overboard on this. After all, you need to get your big fat foot past that narrow ankle. If you want to tighten the ankle, make sure you knit socks with an elastic yarn so you can get your foot and heel through the ankle!
- Ribbing length: This is the length you want for the ribbing. Ribbing serves two functions: 1) it helps hold the sock up and 2) it keeps the edges from curling. To hold up heavy kneesocks, I recommend at least 2″ of ribbing on knee socks; I used 3″. However, the length is up to you; but please don’t enter a negative number or your pattern will spew nonsense. Ankle socks may use less ribbing, particularly if you knit them to fit snugly.
- Sock Length below ribbing: This is the length from the floor to the bit just under the ribbing; see the blue arrow to the right. Obviously, the full length of the sock is the sum of the ribbing length and the length below the ribbing.
You can make the sock long or short — what ever value you wish. Just decide.
Here’s a tip: If you are knitting socks between ankle and knee length, I suggest you put on a sock when you figure out this length. Measure up from the floor, then place a pin at the point where you want the ribbing to start. You’ll use that pin to figure out the calf measurement.
- Calf circumference: Just below the ribbing, the sock circumference will match the value you enter in this box. The value to enter depends on your leg shape and the length of sock you want to knit.
If you are knitting short ankle socks, you probably don’t need to shape the sock above the heel turn. So, leave this equal to your ankle circumference. (Yes, in this case, the term “calf circumference” makes no sense. But I can’t change it in anticipation of your choice.) Setting the calf circumference equal to the ankle circumference will result in a pattern for a conventional unshaped sock. Most sock patterns are designed like this. This choice makes it very easy to introduce very funky difficult to knit stitch patterns. However, if you try to make the socks to long, they won’t fit large calves.
If you are knitting knee socks and have honest to goodness calves (as most people do), you will need to knit shaped socks. So, measure around the thickest part of your calf; subtract 5% to 10% so your socks stay up!
If you decide to knit mid-length socks, I hope you followed my suggestion and placed a pin at this point where where you want the ribbing to begin? If not, place one there now; then measure around your leg at the level of the pin. Then, subtract 5-10% from this measurement and enter that value. (But one warning: don’t enter anything smaller than the ankle measurement. First, there is no way your legs get smaller as they go up. Second, I haven’t coded for that possibility.)

Ok, so measure, and ask questions if you don’t understand something. Then, enter your values, create a pattern and cast on for the toe!
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Lucia Liljegren: Copyright 2005-2007 Rights to all site content including knitting patterns, generators and haikus reserved.
Announcing The Knee SockKnitalong!
I am forever trying to find new ways to bind off loosely in rib. When I knit a turtleneck, which is, after all wide enough to stretch over your head and therefor quite a big wider than your neck, I find it’s sufficient to bind off using larger diameter needles. Unfortunately, with socks, which have leg hugging ribbing, I often find the bind off row is still too tight.
“Whoah Nelly”, you say! The single YO after a purl followed by a knit is really short! The yarn passes over the right needle tip once and never passes under. 
Now you will actually bind off. Working this bind off is fairly similar to working a regular bind off for k2-p2 rib. However, you need to do something with the yos. The text description is horrifying, so I’m going to describe the final round in pictures. 




