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Crochet Flat Circle Planner

Build evenly increased rounds, copy the pattern and estimate the finished size from your gauge.

Whole number from 3 to 24, worked into the starting ring
From 1 to 40, including the starting round
Changing units also converts both gauge counts
Count across a flat swatch; decimal values are allowed
Count vertically in the same flat swatch

Each later round adds the same number of stitches as the starting ring. The size estimate treats each round as one measured round-height of radius, so diameter is twice the accumulated radius. Yarn, hook, stitch type and tension can change the result; make a small swatch and adjust if the fabric cups or ruffles.