If a T-shirt feels too long, you can shorten it by marking a new hem, trimming carefully, and finishing the edge with a stretch-friendly stitch or a compatible no-sew product. Try the shirt on before cutting and check its shape from the side and back. The best method depends on the knit fabric, how much length you want to remove, and whether you need a durable finish.
Quick answer
Wear the shirt with the bottoms you plan to use, mark the desired length, and add the hem allowance required by your chosen finish. Measure from the floor or a consistent garment reference so the front and back stay even. Test a small piece first. Sew a stretch hem for a finish you can control, or use fabric hemming tape only when its instructions allow the shirt’s fabric and care routine.
Choose a finished length before cutting
Put on the shirt and stand naturally. Mark the point where you want the new hem to fall, then sit, reach, and move to see whether the length still feels comfortable. If you plan to tuck it in, leave enough fabric for that. If you want a cropped look, check it with the waistband and layer you expect to wear. Do not cut while the shirt is stretched across your body.
Lay the shirt flat on a clean surface and smooth it without pulling. Measure from the shoulder or another consistent point to the mark on each side. Compare front and back; some garments are intentionally longer at the rear. Keep that shape if you want to preserve the original fit. The site’s T-shirt sizing guide can help you think about garment length and fit.
Gather tools and plan the hem allowance
Useful tools include fabric scissors, chalk or a washable fabric marker, a ruler or measuring tape, pins or clips, matching thread, and an iron if the finish instructions call for it. Decide whether you will fold a narrow hem, use a twin needle, apply a stretch stitch, or use fabric hemming tape. Each method needs a different amount of fabric, so mark the cut line below your desired finished line.
Use a small sample from the same shirt or a similar knit to test your method. Check how the fabric stretches and whether the finish feels comfortable. If you are using adhesive tape, confirm it works with the fiber content and care instructions. Do not apply heat beyond the garment or tape manufacturer’s guidance.
Compare sewing and no-sew finishes
| Finish | Useful when | What to check |
|---|---|---|
| Stretch stitch on a sewing machine | You want a flexible sewn hem | Test stitch length and tension on scrap fabric |
| Twin needle hem | You want a common double-row finish | Confirm machine setup and stretch behavior |
| Coverstitch | You have access to a dedicated knit-garment machine | Practice on the same fabric first |
| Fabric hemming tape | You need a no-sew option and the product supports the garment | Check fiber, application, and care directions |
| Raw edge | You want a casual cut look | Test whether the knit curls or changes after washing |
Shorten and sew the shirt
Once the fit and mark are correct, measure the hem allowance for your method and draw a level cut line. Fold the edge according to your plan and press lightly if the fabric permits it. Use clips or pins to keep the fold even. Sew slowly without stretching the shirt as it feeds; pulling the knit can make the hem wave. Test the finished seam by gently stretching the fabric, then trim loose threads.
For a no-sew tape, follow the product’s exact placement and application sequence. Protect the ironing surface if required, and avoid pressing across a thick seam that may prevent even contact. Let the garment rest as directed before trying it on. The tape may not be appropriate for every knit or repeated wash routine.
Check the result after washing
Follow the shirt’s care label and the finish product instructions. After the first wash, check whether the hem remains level, the adhesive holds, or the knit has rolled. If the result is not comfortable, adjust the method on another garment rather than adding untested heat or glue. Keep the original cut piece until you know the new length works.
A long T-shirt worn untucked may need only a small adjustment; a shirt for layering may need a shorter hem that does not bunch at the hip. If the garment is part of a uniform or product line, do not alter every shirt until one sample has been approved. For a new blank with a fit you prefer, browse in-stock T-shirts or explore custom T-shirt options.
Practical examples
A person who wants a neater untucked fit can mark a modest amount, preserve the side seams, and test a stretch hem on a spare section. Someone making a cropped layer can try the proposed length with high-waisted jeans and a jacket before cutting. A team preparing uniform shirts should avoid irreversible alterations until members confirm the fit and the organizer has approved a sample.
Frequently asked questions
Can I cut a T-shirt and leave the edge raw?
Some knits roll or curl at the edge, while others behave differently. Test the fabric and wash a sample before deciding on a raw finish.
Can I use hemming tape on any shirt?
No. Check the tape instructions and garment fiber and care label. Heat or adhesive may not suit every fabric.
How much should I cut off?
Mark the finished length while wearing the shirt with the intended outfit. Add the hem allowance before cutting and test on a sample when possible.
Why does my sewn hem look wavy?
The knit may have stretched while sewing, or the settings may not suit the fabric. Practice on scraps and feed the material without pulling.
