FOR MAKERS

Free crochet tools & calculators

Everything you need to plan a project — yarn amounts, sizing, charts and design planners. No account, no sign-up.

🧮 Calculators

Yarn Calculator

Find out how much yarn you need for any project.

Gauge Calculator

Compare your gauge to a pattern and get the right stitch count.

Blanket Size Calculator

Get the exact chain and row count for any blanket size.

Granny Square Calculator

Work out how many squares and rounds you need for a project.

Yarn Substitute Calculator

Swap yarns and see how much of the substitute you need.

Stitch Multiple Calculator

Round any stitch count to fit a pattern repeat.

Yarn Cost Calculator

Estimate the total cost of yarn for your project.

Finished Size Calculator

Predict the finished dimensions of a piece before you start.

Border Calculator

Work out stitches needed to go around any edge evenly.

📊 Charts & Guides

Yarn Weight Chart

The 0-7 yarn weight system with hook sizes and gauge.

Hook Size Chart

Convert crochet hook sizes between mm, US and UK.

Crochet Abbreviations (US/UK)

Translate crochet stitch terms between US and UK English.

Stitch Symbol Chart

Read crochet chart symbols like a pro, US and UK included.

Yarn Fiber Guide

Compare wool, cotton, acrylic and other yarn fibers.

Blanket Size Chart

Standard blanket dimensions from lovey to king size.

Hat Size Chart

Head circumference and hat sizing from newborn to adult.

Baby Clothing Size Chart

Standard baby garment measurements by age.

Baby Blanket Size Guide

Standard baby blanket sizes, from lovey to toddler blanket.

Amigurumi Eye Size Chart

Pick the right safety eye size for any amigurumi.

Pom-Pom Size Chart

Yarn wraps and maker sizes for perfect pom-poms.

🎨 Design Tools

Random Color Palette Generator

Build matching yarn color palettes from any base color.

Granny Square Color Planner

Preview color combinations round by round before you buy yarn.

Stripe Generator

Design a random or repeating stripe sequence for any project.

Mosaic Crochet Planner

Draw a grid pattern and preview it as mosaic crochet.

Crochet calculators built for real projects

Whether you're figuring out how many skeins to buy, checking a hat size chart, or planning a stripe sequence, these free tools take the guesswork out of planning. They're built right into StitchNest and work on any device — no downloads, no email required.