With this simple refashion tutorial and a sweater, you can learn how to lengthen sleeves of a jacket or coat! This would be a great gift for someone with long arms!

I think I have monkey arms because ready-to-wear jacket sleeves are never long enough for me. I either have to make my own jackets, or I can use this sewing tutorial to simply lengthen the sleeves.

How to Lengthen Jacket Sleeves // heatherhandmade.com

At first I thought this would bother me if I wasn’t wearing the same color sweater underneath the jacket. I’m usually wearing a bunch of layers underneath, and I don’t think anybody would be able to tell which sweater is peaking out.

I really need to add some sweater sleeves to this rain jacket I made a couple of years ago.

How to Lengthen Jacket Sleeves // heatherhandmade.com

It’s unfortunate that you can’t actually make the sleeves longer on a jacket, but this refashion can add length. You can choose a matching sweater for a streamlined look where the sweater blends in, or you can choose a contrasting sweater for a nice pop at the wrists. It’s important that you choose something you’ll love!

This trick would also help with cuffs that are rough and might chafe your wrists. If your family member complains about their jacket cuffs irritating them, then you could add some sweater cuffs for a soft alternative.

How to Lengthen Jacket Sleeves // heatherhandmade.com

Supplies

  • Jacket
  • Matching or contrasting sweater you don’t mind cutting
  • Sewing supplies

How to Lengthen Jacket Sleeves // heatherhandmade.com

How to Lengthen Sleeves of a Jacket or a coat

1. Watch the video and then read the tutorial below.


2. Measure the amount you need from your wrist to the top of the cuff.

How to Lengthen Jacket Sleeves // heatherhandmade.com

If you jacket doesn’t have a cuff then measure from the top of the placket (where the buttons are). In my photo below I was adding the length of the placket to the length I needed past the hem of the sleeve.

Lengthen Coat Sleeves With Sweater Sleeves Tutorial

3. Use that measurement to cut the sleeves of a sweater.

How to Lengthen Jacket Sleeves // heatherhandmade.com

4. Cut both sweater cuffs the same measurement.

How to Lengthen Jacket Sleeves // heatherhandmade.com

5. Thread a hand needle with matching thread. Use two threads for extra strength.

How to Lengthen Jacket Sleeves // heatherhandmade.com

6. Serge or zigzag the raw edges. The olive sweater fabric was a really open weave so I opted not to zigzag or serge. Instead I put my hand stitches closer together.

Lengthen Coat Sleeves With Sweater Sleeves Tutorial

7. Turn the jacket sleeve right side in, and turn the sweater cuff right side in. Place the cuff around the jacket sleeve and the place where you measured before. The sweater sleeve will probably have to be stretched out to fit around the coat sleeve. Line up the seam of the sweater cuff with the seam of the jacket.

8. Hand sew the sweater to the jacket sleeve. If there is lining then sew the sweater cuffs to the lining. If there is no lining then sew the sweater cuffs to the cuff. Do you best to sew an invisible stitch by only catching a couple of threads on the jacket.

Lengthen Coat Sleeves With Sweater Sleeves Tutorial

9. Tie the thread off in a square knot. I like to sew each side individually to help prevent the thread unraveling all the way.

How to Lengthen Jacket Sleeves // heatherhandmade.com

My brother gave me this idea, and I did it to one of his jackets. Then I did the same thing to a jacket that I wore while I was pregnant. I had thrifted this jacket and just needed a little bit of length, and this trick was the perfect solution.

Lengthen Coat Sleeves With Sweater Sleeves Tutorial

This is a version I did for my brother. The black on black looks really nice. He only needed a small amount to lengthen his jacket sleeves.

Lengthen Coat Sleeves With Sweater Sleeves Tutorial

If you lengthen a jacket using this DIY tutorial, I’d love to see! Please share it on social media with the hashtag #heatherhandmade and tag me!

How to Lengthen Jacket Sleeves // heatherhandmade.com

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Author: Heather Handmade

I'm a seamstress and mother. I sew, blog, thrift, upcycle, design fabric, and teach sewing classes. I'm also a self-proclaimed fabric fondler.

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12 thoughts on “How to Lengthen Sleeves of a Jacket

  1. I am laughing as I comment — don’t get me wrong, It is a great tutorial and I will be using it to replace some worn cuffs — but (grin) as someone whose arms are nearly 3 inches shorter than normal I have never, ever experienced too short cuffs. On the contrary! As a matter a fact my extended jacket sleeves are great in cold weather – built in mittens or puppets for instant distraction…

    Love seeing what you create.

    Posted on December 8, 2018 at 3:44 pm
  2. Another alternative is dollar store stockings. I have used them to replace the shredded cuffs of windbreakers.

    Posted on December 7, 2018 at 1:16 pm
  3. Awesome! I'm totally going to do this, thanks.

    Posted on April 12, 2017 at 8:09 pm
  4. Wow, thanks so much

    I bought a mint leather jacket from the 70s. Everything fits but the sleeves; I'm tall.

    Posted on March 8, 2017 at 12:32 am
  5. Thanks for so cleary showing a great way to do this. All the long armed sewing people of the world thank you!

    Posted on January 9, 2017 at 7:05 pm
  6. Great I was looking for this tutorial . Thanks !

    Posted on April 9, 2016 at 2:29 pm
  7. Thank you for the great fix! Now my wrists won't freeze.

    Posted on December 18, 2015 at 11:25 pm
  8. I had this idea. You confirmed it was a good one. Thanks!

    Posted on December 6, 2015 at 2:08 am
  9. Just found this. Nice solution, and seems it would be helpful to make a coat warmer, too. Or fix cuffs that chafe, too.

    Posted on December 19, 2014 at 11:25 pm
  10. WOW!! Way to think out side of the box! Love the color too!

    Posted on July 21, 2011 at 3:47 pm
  11. Very cute, easy idea. I have fairly long arms, so this idea will be put to good use! 🙂

    Posted on July 20, 2011 at 5:54 pm
  12. VERY cute! I love the mustard yellow. I think that's one of my new fashion favorite colors.

    Posted on July 20, 2011 at 2:55 pm