How to Rehem Pants

Ham inside of pant leg.

So here’s the thing about sewing: eventually, people will figure out that you do it.  And then they will have questions…  Uncomfortable questions.  Questions like: “Can you fix a…” and “Can you rehem my…”.  Sometimes they will make an appeal to emotion: “My grandmother always used to do this for me, but she’s so sick and close to the end now that I just don’t feel comfortable asking her, the dear soul…  Can you help me?  I just want these pants to be hemmed correctly FOR HER FUINERAL because she would DIE AGAIN OF HORROR if I used iron on hem tape and irons aren’t really my thing anyway thanks.”  (With all condolences to anyone reading this who actually has a dying relative who used to handle their domestic errands.)  I for real don’t know why people ask me these things, since I legit just cuff up my jeans when they are too long, which is always, because I’m short and somewhere someone decided that jeans labeled “short” should be right for someone 5’8” – 6’1” tall.  Seriously.  That’s not how that word even works.

So you’re gonna want to know how to actually properly rehem a pant.  The good news is that it’s really not that intense.  I mean, I’ve seen people make it plenty intense, but don’t recommend those methods. They’re like, work.  Yuck.  :(

Outside of hemmed pants.
To start, you will need pants with an existing hem. On the outside, it doesn’t look like much.

If you look really close, you’ll see a line of tiny divots.  Those are the stitches that make up the hem.  It’s a machined blindstitched hem, btw.  They almost always are, just for hate’s sake.  Can you see them well enough to pick them out?  This is not a good side of the pant to try to remove this kind of hem from.

Serging inside pant leg.
On the inside, you can see the serged edge of the pant, turned up when the original hem was put in.

If you look really really closely, you might be able to sort out which stitches are the serge, and which are part of the pant hem.  I cannot, if i’m being honest.  So I’m not going to attack this hem from this side.

Wait, what?  If not the outside or the inside of the pant, aren’t we, like, out of sides here?  Nope!  We’re taking this baby out from the inside of the seam.

Stitches between the two layers of the pant hem. You;’re missing nothing on this photo - no one is actually going to see them.
Carefully pull the serged edge away from the main of the pant.leg. You should have a stitch every 1/4” or so connecting the two layers.

If you’re not familiar with machined blind hems, this is how they work*:  you do a weird foldy-foldy trick to set up the hem, then the machine sews 4 stitches straight on the hem and zigzags over one stitch to catch the (folded back) main of the pant.  You have to set all the widths up for every fabric you do, but once you’re set, it’s blinding fast.  (*Unless an actual blind-hemmer machine is being used.  Those are super-nifty, and they have a curved needle and the tension can be a trick, but they’re hella cool and no pressing required and the resulting inside stitches look like a serger did them.  While drunk.  Soooo drunk.)

Anyhoo, going forward…

Ripping the first stitch.
Once upi find a stitch between the layers, use the sharp bit of the seam ripper to cut it. This is SO MUCH safer than using snips.

I don’t have pic for the next step, because it really requires more of a video.  Basically, give the two layers a little tug apart and wiggle action after you’ve gotten the first stitch severed.  The stitches close to there should surrender.

You just need to get out enough stitches to slip your finger inside the seam. Then this gets really, really easy.
Blind hem stitches visible.
Now use your middle finger and thumb to pull the hem apart. You’ll be able to see the stitches easily against the finger inside the seam. Use your seam ripper to flick these out (or cut them, as needed).

From there it’s pretty fast and easy.

Pulled threads in fabric weave.
Check the outside of the pant. If you have over-tugged any stitches, you’ll see some divots and bumpsies.
Realigning fabric weave.
Give the fabric a bit of a stretch on the bias in both directions to get the weave back into proper alignment and make the divots go buh-bye.
Ball of threads
Side rant: I swear, the thread used for commercial blind hems on women’s trouser is thinner than normal. I feel like that’s deliberate…. Someone’s out there going, “How shall we get women to purchase more basic trousers? Let us make the hems so that they tear out easily.”

So, the first part of this operation is done.  Now it’s time to mark the new hem and whip that in…

Ruler against old hem.
Mark the new hem up from the old one.

You might be tempted to mark the new hem off the serged edge of the bottom of the pant.  Don’t do it!  Those things are usually not as straight as you would expect.

All of the things on my work table.
If your work surface looks a little cramped (like mine), then a pressing ham is about to be your best friend.

If you don’t have a pressing ham, you can roll a towel up really tight and secure it with safety pins.  Also, you should as for one on the next gifting occasion.  They are way more much cooler than they look.

pinned hem
So once you have your hem marked and pinned into place….
Ham inside of pant leg.
…put the pressing ham inside the pant leg.

Inside?  Inside the outside?  The pant is inside out, so it’s a bit of a grey zone.

So, the pants I’m hemming are a rayon blend.  I’m about to iron them. Rayon and irons are a situation.  Rayon becomes REALLY SHINE-Y when you hit it with a hot iron.  And while that would theoretically be a problem on the inside of the pant, rehemming is a thing and the inside of the pant can become the outside of the pant.  Oof.  So  the right solution is to always use a pressing cloth with rayon.

Paper towel as pressing cloth.
I know that I have a pressing cloth, and a supply of muslin scraps that will work, but those are seriously not handy right now. I’m using a paper towel. Ghetto? Maybe. Does it work? Well enough.
New hem pressed in.
Press the new hem in. The old hem isn’t really out yet. That required steam.

My steamer, which I much prefer to an iron under basically all circumstances, is in the garage.  It’s on the other side of the car.  :(

Hem pinned horizontally.
Now that I’ve steamed everything all nice and pretty, I’m re-pinning the hem for sewing up.

Those of you who know me well enough to have been gobsmacked that I pinned up the hem should sit down for this.  Yes, I re-pinned the hem for sewing later.  I generally use more pins for hand sewing than machine sewing.  I know, right?

So, here’s the thing…  Remember earlier when I said that machined blind hem stitches are lightening fast?  They are also kind of persnickety, because you have to get the stitch depth right for every fabric and I kind of can’t be bothered.  I’ve sewn actual miles of hems by hand.  (Because operas, people; because operas.)  I’m not terribly troubled by hand hemming two pant legs.  If you hate hand sewing, you might find it worth while to get the machine set up to do the blind hem.  I’m just going to do a catch stitch (aka, cross stitch or X stitch or maybe other aliases as well), because my needle doesn’t really need setup time.

Here’s how we do:

Short stitch in seam allowance.
Take a short stitch in the seam allowance part of the hem. Don’t pull it all the way through. That would be silly, ’cause you won’t have a stitch anymore.
Setting up a bullion knot.
Start a second stitch in the same place, Before pulling it through, wind the thread around the needle 3-5 times. Pull through. You now have a knot.

Wait, what?!?  Yeah, that trick for getting a knot on the end of your sewing thread works in the middle of fabric, too.  Also, I’m not sure why I do the stitch then stitch-knot action.  I truly believe that it stays in better, but I’m not sure I have actual empirical evidence to support that belief.  So…  Yeah.  Anyhoodles…

Backstitch on hem.
Working away from yourself, take a backstitch onto the hem of the pant.
Backstitch on the main of the pant.
Now take a backstitch on to the main of the pant. You want to catch only the behind-threads of the fabric. (Is there a technical term for those? Any weavers in the crowd?)

Sorry for the terrible photography.  This was done as part of a Real Life Thing(tm), and navy fabric with navy thread isn’t ideal.  I’ll do a high contrast versions at some point.  I actually love this stitch – it works up fast and it’s got some really neat strong suits.

Finished catch/cross stitch.
Repeat this zigzaging hem-to-main backstitch pattern, and you’ll see why the stitch gets some of its names.

Caveat: yes, I do know a fully invisible-from-both-sides way to do up a hem.  But if I took the time to hem it and hem it well, you’re gonna know.  Thhhrrriiibbbt, and so there.  The catch/cross stitch is awesome because there is a bit of play to it.  There’s enough thread that layers can swing semi-independently, and you don’t get that stiffness like when a hem has been nailed to the main of the fabric (most problematic on loose, swingy, or curved hems).

Outside of pant hem.
Your stitching should be pretty invisible on the outside of the pant.

Now, to be real, the stitches were completely invisible when I put them in (I do have a witness), but they were lamentably visible (to me, not to my witness) the next day after relaxing folded on a flat surface.  So just be aware that hems hate you, and they want to help you fail.  Because hems a-holes.  Just so as you know….

ps – if anyone ever asks you to hem up jeans, say no.  The average home sew machine just won’t like that, and you don’t want to do it by hand.  If they beg/plead/whine/cajole, honestly, punching them and hoping for a jury with a stitcher or two on it seems like a reasonable response.  ;)

pps – no, but for the reals.  Completely reasonable.  HAVE YOU EVER HEMMED A JEAN WITHOUT AN INDUSTRIAL MACHINE?  Yes?  Ok, but have you hemmed a jean with an industrial machine?  No?  Trust me, you can keep your “jeans-a-ma-jig” thinger.  You just need an industrial for that madness.


So….  Least sexy content ever?  Prolly.  Useful?  Hopefully.  I’m curious…  What’s the weirdest “So, I heard you sew.  Can you….” request you’ve ever gotten/heard of?


  1. The weirdest “So, I heard you sew” request I’ve ever gotten was when someone I barely know asked me if I could make the neckhole of a shirt smaller. Make a hole… smaller???
    And someone asked me about replacing a zipper once, even though pretty much all I sew is 18th century and I have very little experience with zippers.
    Why can’t people just take things to alteration shops? There are several such shops in my town!
    (I know, I know, it’s because they want alterations for free.)

    OH and I just remembered, someone once tried to dump an unfinished quilting project on me! “You sew, right? Well there’s a whole quilt in here, all cut up and ready to sew!” she said, as she handed me a bag full of triangles of hideous and disgusting polyester fabric, some of which were already sewn together. I understand that unfinished projects happen, but that’s not the proper way to deal with them. Also, I’ve never made a quilt before.

    1. LOL – make the neck hole smaller? I mean, sure, ok, but that shirt is gonna look REAL WEIRD! Omg, that is the awesome of profoundly not awesome. Also, you are a better person than I. My response to the quilt pieces would have been… “direct” is too subtle. I would have directed all of my suppressed road rage at that person. All I need is a jury of my peers, right? We can still find 12 people who sew in my area, surely.
      Seriously, thank you for putting the time in to posting that – it was a day today, and I needed that laugh! Stay awesome, Vincent! :)

      1. Yeah, to even attempt that would require taking apart and practically re-making the whole darn shirt!

        I can’t remember what my reply to the quilt stuff was, but I know I did end up taking the bag and letting it sit in my room for a while before I inevitably threw it out. (I’m normally very big on saving fabric, but this stuff was… so bad.. so scratchy. So orange and avocado and baby blue and all manner of colours that should not be together.)
        But that was years ago when I was a very very shy teen, and I’m certain I’d have the courage to say NO if someone made such an offer today!

        1. Lol! It does take years to learn to say no to helping people with their sewing requests. Kudos for learning that skill! Your time and sanity (and aesthetic sensibilities) are important. :)

    2. Yeah, someone JUST tried, this weekend, to sell me on taking about a hundred Hawaiian shirt kits a friend of his had made and sewing up the shirts to sell them. A) I don’t even like making clothes I wear twice; B) I don’t do production sewing; C) I am not setting up a business to sell only and solely 100 copies of THE SAME SHIRT.

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.