Crochet Calculators

Every crochet-specific calculator on the site, from blanket and motif sizing to amigurumi scaling and stitch references.

Crochet involves shaping fabric through a planned sequence of increases and decreases rather than the two-needle mechanics of knitting, which creates its own category of sizing and shaping math — flat circles, motifs, amigurumi proportions, and blanket dimensions. This category brings together every crochet-specific calculator on the site.

New to crochet, or deciding between crochet and knitting? See the crochet vs. knitting guide. For amigurumi specifically, the amigurumi basics guide covers the magic ring, spiral rounds, and scaling techniques these tools are built around.

Several of these tools cover closely related but distinct techniques — for example, three separate amigurumi calculators handle scaling, safety eye sizing, and overall size estimation as separate concerns, since each involves different math. If you're not sure which specific tool applies to your project, the guides linked above walk through the broader technique first.

All 23 tools in this category