How to Shorten Curtains Without Sewing (Hem Tape Method)

Ready-made curtains can be too long for your window: extra fabric piles on the floor, a liner can show at the bottom, or the hem catches the vacuum. The usual fix is a sewing machine. If you do not own one, or just do not want to use one, there is a simpler route: iron-on hemming tape.

This guide explains how to shorten curtains without sewing, from deciding on the finished length to pressing the final fold. It is written for beginners and needs little more than a tape measure, scissors, an iron and a roll of hemming tape.

How hemming tape works

Iron-on hemming tape is a strip of heat-activated adhesive. It sits between two layers of fabric, in this case the curtain and the folded-up edge of the hem, and bonds them together when you press it with a hot iron. There are no stitches, and because the tape is hidden inside the fold, nothing shows from the front.

The method suits a wide range of curtain fabrics, but two things need to line up: the tape and the iron temperature have to be right for your material. Before you begin, read the care label on the curtains and the instructions on the tape packaging, because different fabrics and tape brands call for different heat settings. IKEA's product page for its own hemming tape says it is not suitable for fabrics with a low iron temperature, and that for heavier fabrics you can use two strips side by side. One home blogger who hemmed fairly heavy polyester panels used 5/8-inch tape.

What you need

  • Curtains, ideally hung on the rod so you can judge the length
  • Tape measure or ruler
  • Pins or a pencil / fabric marker
  • Sharp fabric scissors (a rotary cutter, mat and quilting ruler make long straight cuts easier, but they are optional)
  • Iron-on hemming tape in a width suited to your fabric
  • Iron and ironing board (or a towel on a hard surface to protect the floor)

Before you start: wash first, if the label allows

If your curtains are washable, one tutorial recommends washing and drying them according to the care label before you measure and hem. Some fabrics shrink during the first wash, and hemming first could leave you with curtains that end up shorter than planned. If the care label says dry clean only, skip the wash and follow the label.

Step 1: Decide where the curtains should fall

Hang the curtains exactly as they will be used, because it is far easier to judge length when they are in place. Then pick a style. Curtains can:

  • hang slightly above the floor,
  • barely touch the floor,
  • "break" slightly at the floor, or
  • pool on the floor.

Mark the spot where you want the finished edge to land with pins. Measure every curtain panel separately.

Step 2: Work out how much to cut off

You are not cutting at the pin line. You need to leave fabric for the hem itself. One tutorial folds up a 1-inch hem, so it leaves roughly 1.5 inches of extra fabric below the finished-length line for curtains that just touch the floor, and closer to 3 inches for a slightly pooled look. Another tutorial measures from the bottom edge to the pins and subtracts 2 inches to allow for two folds of about an inch each. Different methods use different allowances, so decide on your hem size first and work backwards.

A tip repeated in these guides is to be conservative. You can always trim more fabric later, but you cannot add it back. If you are unsure, cut a little less than you think you need, rehang the curtain and check.

Step 3: Cut a straight edge

Lay the panel flat on a large table or a clear stretch of floor. Measure the amount to remove and make several small pencil or fabric-marker marks across the back, then check with a ruler that they are level. Cut across carefully with sharp scissors. Dull scissors can drag the fabric and leave a ragged edge. A crooked cut will show up as a crooked hem, so go slowly.

Step 4: Test the tape on a scrap

If you have an offcut from the fabric you just removed, use it. Press a short piece of tape between two folded layers with your planned iron setting. This confirms the heat setting is safe for the fabric and that the adhesive actually bonds to it.

Step 5: Place the tape and fold the hem

  1. Fold the raw edge up toward the back of the curtain by about an inch and press it flat.
  2. Place the hemming tape along the raw edge on the back of the curtain, close to the edge but leaving a small amount of fabric below it, following the directions on the packet. Some tapes have a paper backing that you peel away after the first pass.
  3. Fold the bottom edge back up over the tape so the tape is sandwiched inside the hem. Check the width of the fold every foot or so so it stays even rather than gradually widening or narrowing.

Another tutorial folds the edge under 1 inch, presses, and then folds under a second inch before inserting the tape. Either approach works, as long as the tape ends up between two layers of fabric and the raw edge is tucked inside.

Step 6: Press, then let it cool

Follow the heat setting on the tape's packaging and the care label on your curtains. Do not just crank the iron all the way up, especially on polyester and other synthetics. One tutorial says to skip steam, and to hold the iron in one spot for a few seconds at a time rather than sliding it back and forth, so the adhesive gets enough heat and pressure to bond. Work along the hem in sections.

Let the adhesive cool for a few minutes before you tug on the hem or move the curtain. That cooling time lets the bond set.

Step 7: Trim the corners

At each side edge, a small flap of folded fabric may poke out. Trim it at an angle with fabric shears so it does not peek out at the sides. Then rehang the curtain and check the length.

Common problems and fixes

  • The hem looks stiff. A customer reviewing one hemming tape noted that fused hems can feel a little stiffer than stitched ones, so the curtain may hang slightly differently. Expect that trade-off and judge it on a test piece.
  • The tape will not stick. Testing on a scrap first, as in Step 4, helps confirm the adhesive bonds to your fabric.
  • The cut is crooked. A crooked cut shows up as a crooked hem, so re-trim it before applying tape.
  • Yellowing on pale fabric. A reviewer reported that on translucent white curtains the hem turned yellow after five years, while on opaque blackout curtains it did not yellow. If your curtains are sheer or light, test where the tape might show.

Is the hem permanent?

Hemming tape is a heat-activated adhesive that bonds the layers, so settle on the length before you fuse it. IKEA's care instructions for its tape say it can be machine washed at up to 140°F (60°C) on a normal cycle, but check the instructions for the tape you buy.

Quick answers

Can you shorten curtains without sewing? Yes. Iron-on hemming tape, as used in this guide, bonds the hem with heat instead of stitches.

Do I need to remove the curtains from the rod? You can measure while they hang, but you will want to lay them flat to cut and press.

What if my curtains are lined? Check how the lining is attached before you cut, and test the tape and iron setting on a small, hidden corner first. The Lamberts Lately tutorial mentions a liner that showed at the bottom of its curtains but does not cover hemming lined styles, so follow the curtain maker's guidance.

Bottom line

To shorten curtains without sewing: hang and mark the length, add your hem allowance, cut a straight edge, fold the hem with iron-on tape inside, and press at the tape's recommended heat before letting it cool. Test on a scrap first, and cut conservatively.

This is general DIY information. Always follow the instructions on your hemming tape and the care label on your curtains.

Sources

  • Lamberts Lately (LL Home), "How to Hem Curtains with Hem Tape": https://www.lambertslately.com/how-to-hem-curtains-no-sew-method (read 2026-10-12; basis for length styles, hem allowance of about 1 inch, pooled vs just-touching allowances, test on scrap, no steam, hold iron in place, cooling, corner trimming, washing before hemming)
  • Hunker, "Easy No-Sew Method To Hemming Curtains": https://www.hunker.com/13772840/no-sew-hem-curtains-tutorial/ (read 2026-10-12; basis for the subtract-2-inches measuring method and the two-fold approach, and protecting the floor with a towel)
  • IKEA US, "SY Iron-on hemming tape" product page and customer reviews: https://www.ikea.com/us/en/p/-50078746 (read 2026-10-12; basis for two strips on heavier fabrics, not suitable for fabrics with low iron temperature, machine-wash care instructions, and the reviewer comments on stiffness and yellowing)