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Calcimator

Gauge Swatch Calculator

Calculate the number of stitches and rows you need to cast on based on your gauge swatch measurements and desired dimensions.

Inputs

in
in

Results

Stitches to Cast On

100

Total Rows Needed

168

Total Stitches in Piece16,800
Stitches per Inch5
Rows per Inch7
How to Use This Calculator
  1. Knit or crochet a swatch at least 6x6 inches using your intended yarn, hook/needle, and stitch pattern.
  2. Measure 4 inches across the center of the swatch and count the stitches.
  3. Measure 4 inches vertically and count the rows.
  4. Enter your measured stitch count and row count into the calculator.
  5. Compare your gauge to the pattern gauge and adjust needle/hook size if needed — go up a size if your swatch is too small, down if too large.

How the result changes with Target Width

Target WidthStitches to Cast OnTotal Rows Needed
21105168
71355168
130650168
180900168

What each input means

Target Width
Desired finished width of your piece in inches.
Target Height
Desired finished height of your piece in inches.
Gauge Stitches per Inch
Number of stitches per inch from your gauge swatch.
Gauge Rows per Inch
Number of rows per inch from your gauge swatch.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Target Width = 20, Target Height = 24, Gauge Stitches per Inch = 5, Gauge Rows per Inch = 7 = 4 input(s) provided
  2. Calculate Stitches to Cast On
    Stitches to Cast On
    100 = 100
  3. Calculate Total Rows Needed
    Total Rows Needed
    168 = 168
  4. Calculate Total Stitches in Piece
    Total Stitches in Piece
    16800 = 16800
  5. Calculate Stitches per Inch
    5 = 5

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