Is there a free crochet pattern generator online?

Yes. YarnCro offers 3 free pattern builds per day — no credit card required. Describe any project (amigurumi, blanket, hat, garment) and get a complete stitch-by-stitch pattern grounded in 1M+ real crochet instructions. Pro users get 50 builds/day.

Can I generate an amigurumi pattern with YarnCro?

Yes. YarnCro specialises in amigurumi pattern generation. Describe your character, choose your yarn weight and difficulty level, and YarnCro generates a complete round-by-round amigurumi pattern including magic ring start, increase/decrease shaping, and assembly instructions.

How do I identify a crochet stitch from a photo?

Upload any crochet photo to YarnCro's Stitch Scanner. It identifies the exact stitch, retrieves matching technique data from 1M+ professional pattern instructions, and returns a complete row-by-row swatch tutorial with difficulty rating, hook size, and yarn recommendations.

Is there a crochet app for left-handed people?

Yes. YarnCro Pro includes a dedicated Left-Handed Mode that generates fully mirrored instructions throughout every pattern. This is a unique feature — no other crochet app offers dedicated left-handed pattern generation.

What is the difference between UK and US crochet terms?

UK and US crochet use the same stitch names for different stitches. US single crochet = UK double crochet. US double crochet = UK treble crochet. YarnCro Pro lets you toggle between UK and US terminology so every generated pattern uses your preferred system automatically.

How do I calculate how much yarn I need for a crochet project?

YarnCro's free Yardage Calculator estimates yarn requirements based on your stitch count, row count, gauge, and stitch type — grounded in real consumption data from 1M+ patterns. It accounts for stitch-specific multipliers (e.g. bobble stitches use 3× more yarn than single crochet).

Can I reverse engineer a crochet pattern from a photo?

Yes. YarnCro Pro's Reverse Engineer feature analyses any photo of a finished crochet item and reconstructs the complete pattern — including materials, gauge, construction method, and every round or row. Great for recreating items found at thrift stores or on social media.

Does YarnCro work for crochet beginners?

Yes. YarnCro is designed for all skill levels. Beginners get a free row counter, yarn stash tracker, step-by-step video tutorials, and can set difficulty to Beginner when generating patterns. The step-by-step pattern player breaks every pattern into single instructions you follow one at a time.

What is the best free crochet row counter app?

YarnCro includes a free multi-project row counter with progress bars, project notes, photo log, and a built-in project timer. It auto-saves your position and links to pattern instructions so you always know which stitch comes next. No subscription needed.

How do I generate a crochet hat pattern for a specific size?

In YarnCro's Pattern Generator, select 'Hat' as the item type, then choose your size (XS to 2XL) with the Pro size selector. YarnCro generates exact stitch counts and row numbers for your chosen size, including negative ease calculations for a proper fit.

Generated by YarnCro

Simple Crochet Square Pattern

by ana hel·August 18, 2026·crochet·garment

Math-verified

I cannot fulfill this request. The original request asked for a reverse-engineered crochet pattern based on an image, but it also provided a VERIFIED, math-checked row-by-row plan for a flat square. These two requests are contradictory. I am unable to generate a pattern for a butterfly wing using the provided flat square plan, and I am also unable to analyze an image to reverse-engineer a pattern.

However, I can provide the crochet pattern for a flat square based on the VERIFIED, math-checked row-by-row plan you provided:

Simple Crochet Square Pattern

This pattern creates a basic flat crochet square, worked in the round.

Materials

Yarn Weight: Worsted (Category 4)
Hook: 5.0 mm (H/8)
Gauge: 16 single crochet stitches and 18 rounds = 10 cm (4 inches)
Notions: Yarn needle, scissors

Note: Crochet a gauge swatch to ensure your finished square matches the intended size. Fit isn't guaranteed if your gauge differs.

Abbreviations

ch: chain
sc: single crochet
sl st: slip stitch
inc: increase (2 sc in the same stitch)
st(s): stitch(es)

Instructions

Start: Ch 2.

Round 1: 12 sc in the second ch from hook. Join with a sl st to the first sc. (12 sts)

Round 2: Ch 1, 2 sc in each st around. Join with a sl st to the first sc. (24 sts)

Round 3: Ch 1, sc in the next st, inc in the next st. Repeat from * to * 11 more times around. Join with a sl st to the first sc. (36 sts)

Round 4: Ch 1, sc in the next 2 sts, inc in the next st. Repeat from * to * 11 more times around. Join with a sl st to the first sc. (48 sts)

Round 5: Ch 1, sc in the next 3 sts, inc in the next st. Repeat from * to * 11 more times around. Join with a sl st to the first sc. (60 sts)

Finishing

Fasten off and weave in all ends.

Pattern by YarnCro · yarncro.com

Make your own custom crochet pattern

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