Earflap Landmark + Taper Planner

Calculate the front gap, mirrored flap positions, back gap, physical drop and decrease-row schedule from washed gauge.

Measurement unitHat sourceCount preference

Actual head circumferencein
Intended negative ease0–15%
Desired close-hat depthin
Washed body stitches countedstitches
Width of counted stitchesin
Existing lower-edge countused in existing-hat mode
Measured front clear arcin
Desired top width per flapin
Required flap dropin
Washed flap rows countedrows
Height of counted flap rowsin
Bottom widthodd stitches
Relaxed swatch span Ain
Comfortably stretched span Bin
Recovered span Cin

This placement plan is workableThe hat fit, stretch reserve, four edge regions and flap taper all pass the maker gates.

Lower-edge plan64 stitches / 21.33 in3.0% negative ease

Four edge regions32 + 11 + 10 + 11front + left flap + back + right flap

Earflap taper8 rows: 11 → 3 stitches3.20 in calculated drop

From center front, leave 16 stitches, work 11 flap stitches, then leave 5 stitches to center back. Mirror on the other side.

Target hat circumference: 21.12 in
Raw / selected body count: 63.36 / 64 stitches
Actual top width per flap: 3.67 in
Actual front clear arc: 10.67 in
Actual back clear arc: 3.33 in
Flap center stitch: 6th of 11
Decrease rows: 2, 4, 6, 8
Flap row gauge: 2.50 rows/in
Available stretch: 20.0%
Residual growth: 2.5%
Stretch reserve: 17.0 points
Front/back center type: between stitches

Landmark map: 16 front-half + 11 left flap + 10 back + 11 right flap + 16 front-half = 64

Row-by-row flap counts: R1 11; R2 9; R3 9; R4 7; R5 7; R6 5; R7 5; R8 3

Wearer checkpoint wins: pin the four boundaries on the finished hat while it is worn. The center stitch of each flap must sit over the actual ear center before either flap is crocheted.