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Yarn over

A yarn over is the yarn laid over the hook, from back to front, so that the hook can catch it. It is part of every crochet stitch: a yarn over is drawn through loops to make a chain or to finish a stitch, and one or more are put on the hook before a tall stitch is begun. Patterns write it yo.

How to work it

  1. Keep the yarn behind the hook

    Start with a loop on the hook and the yarn that runs to the ball behind the hook.

  2. Pass the hook under the yarn

    One loop on the hook, and the yarn from the ball laid once over the hook, between the loop and the head of the hook. The yarn comes up in front of the hook, passes over its top and runs away behind it.

    Move the hook under the yarn and up behind it, so that the yarn lies over the top of the hook, from back to front. The hook does the moving: the yarn is not thrown round it.

  3. Catch it in the throat

    Let the yarn settle into the throat of the hook, the groove just behind its head. The hook now has hold of it.

  4. Draw it through, or leave it on the hook

    What comes next depends on the stitch. To make a chain or to finish a stitch, the hook draws the yarn through loops that are on it. At the start of a half double crochet (UK half treble) or a double crochet (UK treble), the yarn over stays on the hook as an extra strand while the hook goes into the stitch.

  5. For a taller stitch, yarn over twice

    One loop on the hook, and the yarn from the ball taken twice round the hook between the loop and the head of the hook: two yarn overs, side by side.

    A treble crochet (UK double treble) begins with two yarn overs. Take the yarn over the hook twice before the hook goes into the stitch.

At a glance

Also called
yarn over hook
Used for
drawing the yarn through loops on the hook, in every stitch; putting an extra strand on the hook before a tall stitch is begun
Abbreviations
yo in United States patterns. United Kingdom patterns write yoh, for yarn over hook, or call it yarn round hook.
Direction
Over the top of the hook, from back to front.
Yarn overs before the hook goes in
None for a single crochet (UK double crochet), one for a half double or a double crochet, two for a treble crochet.

The name is a little misleading. The yarn is not wrapped over a hook that stays still. The hook dips under the yarn and comes up behind it, and the yarn is left lying over the hook.

Yarn under is the opposite move: the hook goes over the yarn and catches it from above. Used to pull up the loop of a single crochet, it twists that loop. The stitches come out tighter and smaller, and on the right side they look like small Xs where ordinary single crochet shows Vs. Makers of stuffed toys use it for a dense fabric. In a stitch worked this way only the first catch is a yarn under: the stitch is finished with an ordinary yarn over.

When a pattern says yarn over, or yo, and nothing more, it means the ordinary way. A pattern that wants yarn under says so.

Tips

  • To see which way you wrap, stop with the yarn caught on the hook, before you draw it through, and look at how the yarn lies across the hook.

When it goes wrong

My stitches look twisted, or my fabric is tighter than the gauge.
You may be catching the yarn from above, which is yarn under. Pass the hook under the yarn, so that the yarn lies over the hook, and work a small piece to compare.

Left-handed

The pictures show the hook held in the right hand. For the left hand, read each picture as its mirror image.

Variations

  • Yarn under. The hook passes over the yarn and catches it from above. It makes tighter, twisted stitches, and it is used by choice, most often for stuffed toys.

Patterns that use it

Questions

What does yo mean in crochet?
Yarn over: lay the yarn over the hook, from back to front, and catch it.
Is yoh the same as yo?
Yes. yoh stands for yarn over hook, the form used in United Kingdom patterns. Yarn round hook is the same move again.
Which way does the yarn go over the hook?
From back to front over the top of the hook. In practice the hook passes under the yarn and comes up behind it.
How many times do I yarn over before a double crochet?
Once, before the hook goes into the stitch. A half double crochet also begins with one yarn over, a treble crochet with two, and a single crochet with none.