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Calcimator

Sock Sizing Calculator

Calculate cast-on stitches, heel flap rows, and foot rounds for hand-knit socks based on foot measurements and gauge.

Inputs

in
in

Results

Cast-On Stitches

64 sts

Heel Flap Rows

32

Foot Rounds

51

Heel Flap Stitches32 sts
Gusset Pickup Stitches16 sts
Toe Decrease Rounds8
Adjusted Circumference8.1 in
How to Use This Calculator
  1. Measure foot circumference in inches around the widest part of the foot.
  2. Enter foot length from heel to longest toe in inches.
  3. Input your stitch and row gauge from a 4-inch stockinette swatch in sock-weight yarn.
  4. Review stitch count for cast-on, leg, heel flap, gusset, and toe sections.
  5. Use the heel turn and gusset pickup counts for a traditional heel-flap or short-row construction.

How the result changes with Foot Circumference

Foot CircumferenceCast-On StitchesHeel Flap RowsFoot Rounds
644 sts2261
8.560 sts3053
1288 sts4442
14100 sts5035

What each input means

Foot Circumference
Measure around the ball of the foot in inches. 10% negative ease is applied automatically.
Foot Length
Measure from heel to longest toe in inches.
Stitch Gauge (per inch)
Stitches per inch from your gauge swatch. Sock yarn typically knits at 7-9 sts/in.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    Foot Circumference = 9, Foot Length = 10, Stitch Gauge (per inch) = 8 = 3 input(s) provided
  2. Calculate Cast-On Stitches
    64 = 64
  3. Calculate Heel Flap Rows
    Heel Flap Rows
    32 = 32
  4. Calculate Foot Rounds
    Foot Rounds = max(footRounds
    51 = 51
  5. Calculate Heel Flap Stitches
    Heel Flap Stitches
    32 = 32
  6. Calculate Gusset Pickup Stitches
    Gusset Pickup Stitches
    16 = 16

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