Automatic fit calculator
Single Crochet Beanie Density & Depth Planner
Enter actual measurements and washed gauge. The planner compares the two nearest crown-compatible stitch counts, shows the fit each one creates, and estimates the body rounds needed for your personal hat depth.
1. Circumference and fabric
Switching units converts the current measurements.
in
%
single crochet stitches
in
% before the fabric feels strained
6 for this top-down SC crown
2. Personal depth
in
in
in
rows
in
Measure the crown section after the increase-to-body transition. The calculated round count is a checkpoint; measure the real hat again before fastening off.
Your calculated plan
Method: target circumference = head circumference x (1 – desired ease); raw stitches = target circumference x washed stitches per unit. Usable counts are nearby multiples of the crown/repeat number. Crown diameter is a geometry checkpoint, not a universal stop rule.