How to Use a Seam Ripper, The Best & Fastest Way

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Learn how to use a seam ripper to remove stitches quickly without damaging your fabric. Whether you’ve sewn a seam incorrectly, need to undo topstitching, or want to remove serger stitches, a seam ripper is an essential sewing tool. This beginner-friendly tutorial shows you three easy ways to remove stitches, including straight machine stitches, serged seams, and tips for preventing holes in your fabric.

How to Use a Seam Ripper (Quick Guide)

Removing stitches is easier than most beginners expect.

Insert the pointed end under a stitch.
Cut every third or fourth stitch.
Pull the opposite thread to remove the seam.
Remove any remaining thread tails.
Use a lint roller to clean up loose threads.

What is a Seam Ripper?

A seam ripper is a sewing tool designed to undo stitches and cut thread. They have a sharp point and then a U-shaped blade to cut unwanted stitches. A seam ripper also has a red ball on the shorter prong to prevent it from cutting the fabric by mistake. The seam ripper pictured above is fairly typical of how they look – just a simple plastic handle and metal tip.

OTHER NAMES: Seams rippers are also known as stitch rippers, unpickers, and stitch pullers. I’ve always called them by the generic term unpicker.

Uses of Unpickers

The main uses of a seam ripper are cutting thread, and undoing seams and stitches where there is a mistake. Using a seam ripper makes it less likely (although not impossible) for the fabric to get damaged by removing the stitches. Use a unpicker any time you need to remove stitches where they have become crooked or if you have made a mistake.

Also called:

Stitch ripper
Unpicker
Stitch remover
Stitch puller

BEGINNER TIP: Never pull or rip stitches out, as it can damage the fabric.

How to Use a Seam Ripper (Step by Step)

You can use a seam ripper from the inside of the seam or on the outside. Here are 2 methods for you to try.

1. Seam Ripper on the Fabric’s Wrong Side

Start by unpicking every few stitches on the bobbin side of the seam. Usually every third or fourth stitch is best.
Flip the fabric and pull the top thread. It will come away in one piece.
Remove the stray tail threads from your fabric, and you are done. Using a lint roller can be an easy way to remove all the smaller bits of thread.

2. Rip Seams on the Fabric Right Side

Unpick a couple of threads on the outside of the seam.
Then open up the seam to be unpicked and start cutting a few threads at a time. The ball of the unpicker should be pointing down.
Don’t try and cut too many at once, as you risk putting a hole in your fabric.

PRO TIP – Use a sticky lint remover to remove the last of the threads. This saves so much time compared to picking each loose thread out by hand.

3. Removing Serged Stitches

Whether you have used a 3 or a 4 thread serger, at some point, you will need to unpick a serged seam that has gone wrong. This might seem like a lot of threads to unpick, but with some practice, you will have the job done in no time. Like many sewing tasks, it looks much more difficult than it really is.

With your fabric facing with the right side of the serger stitch facing up, cut both the needle threads every few stitches. This is the red and black stitching in the photo. If you are doing a 3 thread serged seam you will only have one of these.

It helps if your seam ripper is really sharp. A dull ripper tends to drag the threads making it harder to remove the stitches in the long run.

Now my favorite part – Grab the looper threads (the green threads) firmly and the rest of the stitches will unravel.

How to Use a Seam Ripper for Serged Stitches

If you have to resew the seam you have unpicked, don’t forget that the seam allowance will have been cut down by the serger knife.

PRO TIP – Use a sticky lint roller to remove the last of the threads.

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Common Mistakes When Using a Seam Ripper

Pulling stitches instead of cutting them
Using a dull seam ripper
Trying to cut too many stitches at once
Working too quickly
Forgetting which thread to pull after cutting

How to Use a Seam Ripper FAQs

Do Seam Rippers Get Dull?

Yes, they certainly do! Before unpicking, make sure your seam ripper is sharp. Once it gets dull you risk stabbing yourself or making a hole in the fabric, as you will need more force to get it to cut the threads. You will be surprised just how quickly they get blunt. Seam rippers are one of your cheapest sewing tools, so always have a few on hand.

Other Uses of a Seam Ripper

The other main use for seam rippers for opening buttonholes after they are sewn. Learn how to sew buttonholes with your sewing machine.

What to Use Instead of a Seam Ripper

If you don’t have a seam ripper, you can use a pair of embroidery scissors. These small scissors have a fine sharp point, so can be used to unpick seams.

What is the Red Ball for on a Seam Ripper?

The end with the red ball goes down into the fabric so that you don’t make holes. It protects the fabric from being accidentally cut.

How to Sharpen a Seam Ripper

If you need to sharpen a seam ripper, try gently rubbing the point with some steel wool. Ideally, buy a new tool as they are quite cheap, and you won’t get the best results once it goes dull.

In Conclusion

Now you know how to use a seam ripper to remove straight stitches, decorative stitching, and serger seams without damaging your fabric. Taking a few extra minutes to unpick carefully will give you a much neater result than trying to pull stitches apart. Every sewer—even experienced ones—uses a seam ripper regularly. It’s one of the most valuable sewing tools you can own. This method works on straight stitching and most simple decorative stitching.