Crochet Circle Calculator
Get round-by-round stitch counts and written instructions for a flat crochet circle.
How to Use
- Enter your target finished diameter and stitch gauge.
- Choose a 6-stitch start for a tighter, less visible center hole, or an 8-stitch start for a flatter, more even center.
- The calculator generates round-by-round instructions following the standard flat circle formula.
The Flat Circle Formula
A mathematically flat crochet circle increases by the starting stitch count every round. Start with 6 stitches → add 6 each round (round 1: 6, round 2: 12, round 3: 18, etc.). Start with 8 → add 8 each round.
In practice, stitches are spaced evenly around the round with increases distributed to avoid a spiral. Increase placement shifts each round to keep the circle truly flat.
Common uses: potholders, coasters, bag bases, hat brims, appliqués, mandalas.
Results are estimates. Actual finished diameter varies by yarn weight, hook size, and tension.
About this Crochet Circle Calculator
Use this free Crochet Circle 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.