Free Crochet Tools & Charts
Every calculator, chart and reference guide you need to crochet with confidence — gathered in one calm, clutter-free place. No sign-up, no cost, ever.
Half of crochet is the hook and yarn in your hands — the other half is knowing your numbers. How much yarn will a blanket really take? Which hook matches your yarn? What does sc2tog actually mean? This is your home for all of it: free interactive calculators, printable reference charts and in-depth guides, organised so you can find the answer in seconds and get back to making.
Interactive calculators
Type in your project, get an instant answer. The two questions every crocheter asks — solved.
Yarn Calculator
Tells you exactly how much yarn your project needs — by item, size and yarn weight — so you buy the right amount and never run out mid-row.
Open the calculator → Free toolGauge Calculator
Check your tension against a pattern and find the hook adjustment that makes your finished size come out right the first time.
Open the calculator →Reference charts
The lookups you reach for again and again — bookmark this page and you'll always have them on hand.
Yarn Weight & Hook Chart
Match every yarn weight (lace to jumbo) to the right hook size in mm and US letters.
View chart →Abbreviations Chart
Decode every US abbreviation — sc, dc, hdc, sc2tog, BLO and the rest — at a glance.
View chart →US vs UK Terms
The side-by-side conversion that stops the single most common pattern mix-up.
View chart →Blanket Size Chart
Standard finished dimensions from lovey to king, so your blanket lands the right size.
View chart →Hat Size Chart
Head circumferences and hat heights for every age, from newborn to adult.
View chart →Start here: the complete beginner guide
Brand new to crochet? This is the friendly, step-by-step path from your very first stitch to your first finished make.
Complete Beginner Guide to Crochet
Start hereEverything in order: how to hold your hook, your first stitches, reading a pattern and finishing neatly — all linked together so you're never lost. Pair it with the skill level guide to pick projects that match where you are.
In-depth guides
Go deeper whenever you're ready — clear, no-jargon explanations of the things that trip beginners up.
Skill Level Guide
Understand beginner, intermediate and advanced labels — and choose patterns you'll actually finish.
Read the guide →Yarn & Hook Guide
How to choose the right yarn and hook for any project, explained simply.
Read the guide →Crochet Glossary
Every crochet term and stitch, defined in plain English and cross-linked to tutorials.
Open the glossary →How It Works
How our instant-download PDF patterns work — from checkout to your first stitch.
See how it works →Crochet Blog
100+ in-depth tutorials and guides — stitches, techniques, patterns and inspiration.
Browse the blog →"Good tools don't make crochet complicated — they make it calm. Know your numbers, then let your hands enjoy the rest."— Ava, MrsCrochetWorld
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 payment. They're here to help you crochet with confidence.
Do I need to create an account to use them?
No account, no email, no catch. Just click any tool and start using it right away.
How much yarn do I need for my project?
Use the yarn calculator — enter your item, size and yarn weight and it estimates the yardage you'll need, so you buy the right amount.
How do I check my crochet gauge?
Make a small swatch, measure your stitches and rows over 4 inches, and compare it to the pattern using the gauge calculator. It tells you whether to change hook size.
What does an abbreviation like sc2tog mean?
"sc2tog" means single crochet two stitches together — a decrease. Our abbreviations chart defines every US crochet abbreviation in one place.
What's the difference between US and UK crochet terms?
The same stitch has different names — a US single crochet is a UK double crochet, for example. The US vs UK terms chart gives you the full side-by-side conversion.
What hook size should I use for my yarn?
Match it with the yarn weight & hook chart, which pairs every yarn weight with the recommended hook size in millimetres and US letters.
What size should I make my blanket or hat?
Use the blanket size chart and hat size chart for standard finished dimensions by age and style.
I'm a complete beginner — where should I start?
Begin with the complete beginner guide. It walks you from holding the hook to your first finished project, step by step.
Now put your tools to work
You've got the charts and calculators — grab a free, beginner-friendly pattern and make something today.
Browse free patterns Shop all patternsFree patterns to use your tools on
Completely free PDF patterns — the perfect test drive for your new charts.
Put your new skills to use
Ready for your next crochet project?
Choose a beginner-friendly pattern with clear US terms, helpful photos and an instant PDF download.
Browse beginner-friendly patternsKeep learning — explore the hub 🧶
Pick your next topic. Every free guide, chart and calculator is one tap away.
From the Crochet Blog 📖
View all articles →
Best Yarn for Amigurumi: The Complete Guide to Choosing the Right Fiber
Crochet Tips & How-To Best Yarn for Amigurumi: The Complete Guide to Choosing the Right Fiber Cotton, chenille, or acrylic? Learn exactly which yarn gives your...
Read full article
Crochet for Mindfulness: Present-Moment Focus with Hook and Yarn
Crochet Wellness Crochet for Mindfulness: Present-Moment Focus with Hook and Yarn How the quiet rhythm of stitching pulls you into the present moment — and how...
Read full article
Squishy Summer Buddies: Easy No-Sew Summer Amigurumi Patterns (2026)
Summer Crochet · No-Sew · Beginner By Ava Collins · Updated July 2026 · 🕑 8 min read 🕑 10 min read Squishy Summer Buddies: Easy No-Sew...
Read full article
How to Join Yarn in Crochet: 5 Clean Methods for Seamless Projects
Ran out of yarn mid-row? Learn 5 clean, beginner-friendly ways to join yarn in crochet - the invisible join, magic knot, Russian join and more -...
Read full article