Free Crochet Tools & Charts
Free Crochet Tools & Charts 🧰
Every MrsCrochetWorld calculator, conversion chart and reference guide in one place — free, ad-free and made to take the guesswork out of your next project. Bookmark this page!
🧮 Interactive calculators
Yarn Calculator TOOL
How much yarn do you need? Estimate yards, metres and balls by project and yarn weight.
Gauge Calculator TOOL
Check your gauge against any pattern and see instantly whether to go up or down a hook size.
📊 Reference charts
Abbreviations Chart
Every crochet abbreviation decoded, in US & UK terms, with worked examples.
US vs UK Terms
The complete conversion chart so you can follow any pattern from anywhere.
Blanket Size Chart
Standard blanket dimensions from baby to king, plus yarn amounts.
Hat Size Chart
Head circumference and hat sizes by age, plus the simple fit formula.
Yarn Weight & Hook Chart
Yarn weights 0–7 and the full mm / US / UK hook conversion table.
📚 Complete guides
Complete Beginner Guide
From your first slip knot to your first project — every free tutorial in order.
Skill Level Guide
Find patterns that match your experience, beginner to advanced.
Yarn & Hook Guide
Everything about choosing yarn weights, fibres and the right hook.
Crochet Glossary
Plain-English definitions of common crochet terms and techniques.
How It Works
How buying and downloading our instant PDF patterns works.
Crochet Blog
Stitch tutorials, troubleshooting, seasonal ideas and more.
Frequently asked questions
Are these crochet tools really free?
Yes — every calculator, chart and guide on this page is completely free to use, with no sign-up and no ads.
How much yarn do I need for my project?
Use our yarn calculator — choose your project and yarn weight to estimate the yards, metres and number of balls.
How do I check my crochet gauge?
Enter the pattern gauge and your swatch gauge into our gauge calculator and it tells you whether to change hook size.
What does an abbreviation like sc2tog mean?
See our abbreviations chart — sc2tog means single crochet two stitches together, a decrease.
Now find your next pattern
Put these tools to work on a project you will love.
Browse all patterns Free patterns