How to Design Your Own Amigurumi (and Get the Pattern Written for You)
Design any crochet toy in 3D, stitch by stitch: start from an animal, change it with sliders and tools, and get the round-by-round pattern and a PDF.
You have crocheted three bears from other people’s patterns and now you want one with a bigger head, shorter legs and a snout that actually looks like a snout. Writing your own amigurumi pattern used to mean spreadsheets and a lot of frogging. Here is how to do it in a few minutes, on your phone or your computer, and end up with instructions you can crochet from tonight.
What the designer does
The amigurumi designer builds your toy the way you will crochet it: one stitch at a time. It reads the pattern, makes every stitch, and lets the yarn, the stuffing and gravity settle the toy into its shape. Every stitch you see in 3D is a stitch in the pattern, so when you make the head bigger, add a round or move an ear, you see what the finished toy will look like, and the written pattern changes with it.
Underneath, amigurumi is one idea repeated: a shape crocheted in the round, growing and shrinking by evenly spaced increases and decreases. If you want the details, we wrote them up in why every amigurumi pattern goes 6, 12, 18, 24.
Step 1: start from an animal
Open the designer and choose a starter: a standing bunny, a penguin, a frog, an octopus, a teddy bear, a teddy bear shaped like a car, a long cat, a cottage or a donut.
The standing bunny shows how standing toys are really made: its legs are crocheted first, joined with three chains and worked up into one body, so there is no seam between the legs and the body.
Drag on the background to turn the toy around and pinch, or scroll, to zoom.
Step 2: change it with the sliders
Every starter comes with its own sliders: the length of the bunny’s ears, the size of its head, how long the car is, how big its wheels are. Drag one and the toy reshapes as you go. Colour pickers repaint each yarn, and the yarn setting changes the finished size in centimetres: a thinner yarn makes the same toy smaller, with exactly the same stitches.
Step 3: edit by clicking
The tools sit in a rail at the side, like in our other editors, or in a strip under the toy on a phone. Click a stitch and a pink pin marks it.
- Select opens a small panel for that spot: add a round after it, take the round away, colour the round or just a few stitches, work it in the back or front loops, put a safety eye there or sew on a ready-made piece.
- Paint colours a whole round, everything from there on, or a few stitches, in the yarn you pick. The toy repaints at once.
- Add a round and Remove a round make a piece longer or shorter where you click.
- Safety eye puts an eye on the stitch you click, in the size you choose.
- Add a piece sews on a round or pointy ear, an arm, a leg, a tail, a snout, a wheel, a wing, a horn or a ball.
- Move a piece picks up an ear or an arm and sews it on where you click next.
Every click is an edit to the pattern, so Undo always works and the written pattern is always right.
Step 4: build your own shapes
When no starter is close, describe a piece by its size instead of counting rounds. Open the pattern code and write ball 7cm, and the designer works out the magic ring, the increases, the plain rounds and the decreases for a 7 cm ball in your yarn. egg, tube, cone and disc work the same way. Change the yarn and the counts follow, so the piece stays the same size.
Step 5: let an AI help
The pattern code is ordinary crochet notation, such as R3: (sc, inc) x6 (18), so AI assistants are good at writing it. Press Copy guide for AI, paste it into ChatGPT, Claude or another assistant and ask for what you have in mind: a hedgehog with a pointy snout, a little house with a red roof. Paste the code back in and the toy appears. The checker points out any line whose counts do not add up, so the assistant can fix its own mistakes.
Step 6: read the pattern
Open Written pattern. Each piece is a section with its rounds and stitch counts, “make 2” for pairs, colour changes, where to put the safety eyes and how to sew everything together. Choose any of 17 pattern languages, with US or UK crochet terms in English, and download it as a PDF with pictures of the toy from every side.
Your first full pattern is free; after that, patterns unlock one at a time or with Pro, like everything else on Knytstudio.
Making it look like the animal you meant
- Heads are bigger than you think. Most cute amigurumi have a head as wide as the body or wider.
- Small ears high on the head read as a bear, tall ears as a bunny, small ears with a long tail as a cat. Put the safety eyes in before you stuff and close the head.
- Rounds step in multiples of six, so a tiny change in size may not change the count. If a piece looks too plain, make it a little bigger rather than thinner.
- If something looks stretched or squashed in the preview, it would look that way in your hands too: add a round or a few stitches before you start.
Save it, and come back to it
Designs are kept on your device while you play. Sign in and they save to your account, show up on your dashboard and open on any device.
Designs made with the earlier amigurumi designer open here too, converted to the same pieces and stitch counts. A design saved to your account keeps the earlier version with it.
Ready? Open the designer and start from the bunny.
Frequently asked questions
Do I need to be good at maths to design amigurumi?
No. Start from an animal and change it with sliders, or click a stitch to add a round, change a colour or sew on an ear. The designer works out every round, increase and decrease, and writes the stitch counts like a published pattern.
Will my crocheted toy look like the 3D preview?
Closely. The designer makes every stitch of the pattern and lets the yarn, the stuffing and gravity settle the toy, so the shape and the finished size follow the counts you will crochet. Your tension, yarn and how firmly you stuff change the result a little, as with any pattern.
Can I design on my phone?
Yes. It runs in the browser on phones, tablets and computers. The toy stays at the top of the screen while you use the sliders below it, and the tools sit in a strip under the toy.
What if I want a toy none of the starters looks like?
Build it from shapes. A line such as ball 7cm, egg 6cm 8cm or tube 3cm 6cm writes a whole piece from its size, and legs can be joined into one body the way standing toys are made. You can also ask ChatGPT, Claude or another AI to write the pattern code for you.
What happened to my designs from the old designer?
They open in this designer, converted to the same pieces and stitch counts, so you can carry on with them. A design saved to your account keeps the earlier version with it.