Understanding the Knit Miter Squares + Calculator

Knit Mitered Squares
Knit Mitered Squares
Knit Mitered Squares

Knit Miter Squares + Calculator

The act of Knit Miters is when you are creating a square where the stitches in the middle decreases to eliminate stitches out. This will create a square to form on your knitting needles and eventually finish off in the corner opposite.

In the Knit Mitered Baby Blanket, as seen in the introduction picture, each square is a separate mitered square and has been sewn together as the end. This is simply every row as knit, which is technically the garter stitch.

The trick to the miter is that the starting stitch count on the needles has to be an ODD number. The reason for the odd number is that there has to be an even stitch count on both sides of the corner. If using an EVEN number, one side will not be equal to the other.

Three stitches in the middle come into play when doing the miter.

Center Decrease

In the center, there is a term called Center Decrease. Here is the description on how to that:

  • Slip next 2 stitches together onto the right-hand needle (if you are right handed, left if you are left handed) as if you are to do knit 2 together. Knit next stitch, then pass both slipped stitches over the knit stitch you just finished.

The center decrease eliminates 1 stitch on both sides of a corner.


Easy Does It

One row will have the center decease. The next row is just simply knit across. This concept needs that one extra row of no fancy stitches to catch up to make that perfect 90 degree turn.

How to Figure Out Stitch Counts

The calculator below will also figure this out. 

  • Have an odd number count on your needle.
  • Count the number of stitches on the needle.
  • Subtract 3 from the count.
  • Divide by 2
  • This number is the stitch count of regular stitches before the center decrease. It is also the same number of stitches that will be knit after you finished the center decrease on the other side.
  • This number is the starting highest number of your stitch counts. From hereon in, it will decrease by 1 on each side of the corner. See example pattern.


I have 33 stitches on my needle.

  • Cast on 33 stitches.
  • 33 – 3 = 30 stitches. Divide by 2 = 15.
  • Knit 15 stitches, then do Center Decrease, then knit final 15 stitches. Turn.

Example Pattern

  • Cast on 33 stitches.
  • Knit 15 stitches, center decrease, knit 15 stitches.
  • Knit across. (no center decrease)
  • Knit 14 stitches, center decrease, knit 14 stitches.
  • Knit across.
  • Knit 13 stitches, center decrease, knit 13 stitches.
  • Knit across.
  • Continue in the same manner until there are no stitches left.

Miter Square Tutorial

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2 thoughts on “Understanding the Knit Miter Squares + Calculator

  1. Jana

    Mikey I am a lousy knitter but I’ve gotten better over the last year. I vowed 2016 would be the year I improved my knitting and I did!!
    I have ALWAYS wanted to learn to make a Mitered Square and your tutorial has made that possible for me now!!
    I am SOOOOOOOO excited because I can now do one of these amazing scarfs or blankets that has mitered squares made from sock yarn.
    You should google them but there are many. They are just BEAUTIFUL!!
    Thank you again so very much!!!
    Here’s a pattern like I’m talking about:

  2. Thank you so much for this post!! I’ve seen mitered square patterns and listened as people called them “easy” but I’ve never understood exactly how to create the miter. Your instructions are simple and clear…and I finally believe I “get it”… YAY!

    Thank you! 🙂

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