How to Fix a Zipper That Came Off (One Side or Both)

7 min read · WORN

To fix a zipper that came off one side, open the slider's gap by lining it up at the bottom of the zip, feed the loose side's teeth back into the slider (a fork makes a great guide on stuck ones), then zip slowly while holding both sides together. If it came off both sides, you'll need to go in from the top or cut a tiny notch near the bottom stop to slide it back on. Then clamp the slider gently with pliers so it grips again.

Broken zips are one of the top reasons good jackets and hoodies end up never worn; WORN is being built to show you which pieces have quietly dropped out of your rotation, so fixes like this don't get forgotten: Start my outfit diary

First: what kind of zip is it?

Before you grab a fork, figure out what you're working with. It changes the fix.

And check what's actually broken:

• Slider came off one side: very fixable at home.
• Slider came off both sides: fixable at home, just fiddlier.
• Slider is loose and zips don't close: needs a pliers squeeze.
• Teeth are missing or bent: harder; may need a pro.
• Pull tab (zipper pull) came off: easiest of all; use a keyring or paperclip.

Zipper came off one side

This is the most common version, and it's how to fix a zipper that came off on one side in about five minutes.

Method 1: on a separating zip (hoodies, jackets)

1. Move the slider all the way to the bottom so it sits against the box (the little rectangle at the end).
2. Pull the loose side's pin all the way out, then reinsert it into the slider and box, like starting your jacket normally.
3. Hold the bottom firmly and zip up slowly.

Nine times out of ten, that's it. The zip just jumped the track because the pin wasn't fully seated.

Method 2: the fork trick (closed-end zips)

This is the viral fork zipper hack, and it's great for jeans, bags and pencil cases.

1. Unzip the side that's still attached until the slider is near the loose side's teeth, somewhere you can reach easily.
2. Wedge a fork with its tines pointing down into the fabric just below the slider, with the loose side's teeth sitting in the prongs to guide them.
3. Feed the loose teeth into the empty side of the slider, pushing them in with the fork's help.
4. Once both sides are in, pull the slider up a tiny bit to catch them.
5. Zip slowly the rest of the way, pressing the teeth together.

It can take a couple of tries. Go slow; forcing it bends the slider.

Zipper came off both sides

The slider is fully off, sitting in your palm. Two options.

Option A: go in from the top

If the top of the zip (where the teeth end) isn't stitched shut, you can slide it back on:

1. Line up both tracks at the top, teeth facing each other.
2. Thread both sides into the slider at the same time, with the pull tab facing out.
3. Hold them evenly and pull the slider down to engage the teeth.
4. Zip up and down a couple of times to check.
5. Add a top stop: a few tight hand stitches across the top of the teeth so it can't slide off again.

Option B: cut a notch near the bottom

For closed-end zips where the top is sewn in:

1. Find a spot a couple of centimeters above the bottom stop.
2. Snip out one or two teeth on each side with small scissors or nail clippers (only a tiny gap).
3. Feed both tracks into the slider at that gap.
4. Pull the slider up to join the teeth.
5. Stitch across the zip just above the gap a few times to make a new bottom stop.

If this feels too risky on something you love, skip to the tailor section.

Fixing jeans and hoodie zips

How to fix a jean zipper that came off track

Jeans zips are closed-end and take a lot of strain. Use the fork trick or the notch method. Then tighten the slider slightly with pliers (see below), because jean zips often come off because the slider has loosened.

How to fix a zipper on a hoodie or jacket

Almost always a separating zip, so start with Method 1. If the slider keeps popping off, the slider is worn; clamp it gently or get it replaced.

How to fix a dress zipper that came off track

Dress zips are often invisible zips with delicate teeth. Go very slowly, avoid pliers if you can, and consider a tailor if it's a special-occasion piece.

How to fix a backpack zipper

Backpack zips are often two-way. Fix one slider at a time with the fork trick, and use pliers to tighten any slider that's letting the teeth split behind it.

Bent slider or missing teeth

How to fix a zipper slider with pliers

If the zip closes, then splits open behind the slider, the slider has spread and can't grip.

1. Move the slider to the bottom of the zip.
2. Using pliers, gently squeeze the back of the slider (the end the zip comes out of), one side at a time.
3. Test. Squeeze a little more if needed.

Go easy. Metal sliders can crack if you squeeze too hard, and then you do need a new one.

Zipper pull came off

Loop a keyring, a paperclip, a small carabiner or a bit of cord through the slider's hole. Instant new pull.

Teeth missing or bent

A couple of missing teeth near the bottom? You can sometimes stitch a new stop above them and carry on. Missing teeth in the middle, or bent metal teeth that won't straighten with pliers, usually mean the zip needs replacing.

Here's the thing: a jacket with a dodgy zip rarely gets fixed straight away. It goes on a chair, then in a drawer, and you forget you even own it.

WORN would catch that. One photo a day of what you actually wore, one tap, no tagging. After a month it shows the four things you really wear and the twelve you never touch, which is where your broken-zip jacket is probably hiding. Start my outfit diary

When to take it to a tailor

Take it to a pro when:

• Several teeth are missing or the zip tape is ripped
• It's a leather jacket, a winter coat or a special-occasion dress
• The slider is cracked
• You've tried the fork trick three times and are about to throw the whole thing

A tailor or alterations shop can replace a slider or the whole zip. Prices vary a lot by city and garment, so ask for a quote first. It's usually far cheaper than replacing a jacket you love. Outdoor brands sometimes offer repairs on their own gear, too, so check the brand's website.

While you're doing repairs, you might as well rescue your hoodies: put a drawstring back in a hoodie and unshrink a hoodie are both under 30 minutes.

Get your jacket back in rotation

Now you know how to fix a zipper that came off one side, both sides, or just won't hold. Join the WORN waitlist in a minute; you'll get one email when the app opens, and after a month you'd see which rescued pieces you actually wear again.

Start my outfit diary

FAQ

How do you fix a zipper that came off one side?

Move the slider to the bottom, then feed the loose side's teeth back into the empty side of the slider, using a fork as a guide if it's fiddly. Hold both sides together and zip up slowly. On hoodies and jackets, just reinsert the pin fully into the box.

How do you fix a zipper that came off both sides?

Thread both tracks into the slider from the top of the zip if it's open, or cut out a tooth or two on each side near the bottom to make a gap. Slide it back on, zip it up, and stitch a new stop above the gap.

Why does my zipper keep coming off track?

Usually the slider has loosened and can't grip the teeth anymore. Gently squeeze the back of the slider with pliers. If it's cracked or teeth are missing, it needs replacing.

Does the fork trick really work on zippers?

Yes, for zips that came off one side. The fork holds the loose teeth in line while you feed them into the slider. It takes a couple of tries but works on jeans, bags and most closed-end zips.

Is it worth fixing a broken zipper?

If it's a piece you wear a lot, almost always. Home fixes cost nothing, and a tailor's zip replacement is usually much cheaper than a new jacket. If it's something you never wear anyway, it might be time to pass it on.