Crochet Circle Increase Calculator
Get round-by-round stitch counts and written instructions for a flat crochet circle.
How Crochet Circle Increases Work
A flat crochet circle is formed by increasing the stitch count by the same number every round — equal to the starting stitch count. This keeps the circle flat rather than curving into a sphere or cup shape.
- Round 1: Work the starting stitches into a magic ring (e.g., 6 sc into ring).
- Round 2: 2 sc in each stitch (doubles the count).
- Round 3+: Alternate single crochets with increases (inc = 2 sc in 1 st) to add the same count each round.
The formula: each round adds N stitches (where N = starting count). Between increases, work (round number − 2) plain sc before each increase.
Gauge and yarn thickness affect the finished size. If your circle cups or ruffles, adjust your hook size.
About this Crochet Circle Increase Calculator
Use this free Crochet Circle Increase Calculator to get quick, accurate results directly in your browser. It is designed for everyday use with no signup, no downloads, and no account required. No signup is required, and the tool works on phones, tablets, and desktop browsers.