Hemming is the finishing step that separates a completed garment from an unfinished one — and it deserves more care and attention than most beginners give it. A beautiful hem is level, even, and invisible. A poor hem is uneven, lumpy, or visibly stitched. This complete guide covers every hemming technique you need as a beginner sewist in 2026.
Before hemming any garment, read our common sewing mistakes beginners make article — hem mistakes appear in the most common beginner errors list.
Types of Hems — Which to Choose
Double-Fold Machine Hem
The most common beginner hem. Fold 1cm, press, fold again 1cm, press, stitch. Clean, durable, and visible from the right side — suitable for casual garments.
Narrow Machine Hem
Fold 5mm, press, fold 5mm again, press, stitch close to fold. Creates a clean, minimal hem — ideal for lightweight and linen fabrics where bulk is unwanted.
Blind Hem (Machine)
Uses a special stitch and presser foot to create a hem that is nearly invisible from the right side. Takes practice to master but produces very professional results.
Slip Stitch (Hand Hem)
The truly invisible hem — sewn entirely by hand using small, widely spaced stitches that barely catch the outer fabric. Used on formal garments, skirts, and dresses where visible stitching would detract from the look.
How to Hem a Garment — Step by Step
Measure hem length accurately
Never cut the hem length by eye. Use a ruler and tailor's chalk to mark the finished hem line all the way around the garment, measuring consistently from the waist or from the floor using a skirt marker tool.
Add hem allowance and cut
Add the required hem allowance to your marked line (typically 2–3cm for a double-fold hem, 1–1.5cm for a narrow hem) and cut carefully. Even cutting is critical — wavy cuts produce wavy hems.
Finish the raw hem edge first
Before folding, finish the raw cut edge with a zigzag stitch or serger to prevent fraying, especially important with linen and loosely woven fabrics.
Fold and press carefully
Fold the hem allowance up to the marked line and press firmly with a steam iron. For a double-fold hem, fold twice. Pressing before stitching is what makes hems lie flat — skipping this step is the most common reason hems look lumpy.
Pin or clip the hem
Pin the pressed hem in place around the full circumference, spacing pins every 10–15cm. For machine hemming, pins can stay in while sewing — remove just before the needle reaches each one.
Stitch
For a machine hem, sew close to the upper folded edge, maintaining an even distance all the way around. For a hand slip stitch, use small, evenly spaced stitches that pick up only one or two threads of the outer fabric.
Hem Troubleshooting
Hem is uneven or wavy
The hem was not marked with a ruler before cutting, or the pressing was inconsistent. For skirts and dresses, use a skirt marker or ruler with a helper to ensure the hem height is consistent all the way around the body.
Hem stitching is visible from right side
For invisible hems, use a hand slip stitch instead of machine stitching. For machine blind hems, practice on scrap fabric first — adjusting stitch width to minimise the grab on the outer fabric.
Hem is too thick and stiff
The hem allowance is too wide, or the fabric is too heavy for a double fold. Reduce the hem allowance, or use a single fold with a zigzag-finished edge instead of a double fold.
Frequently Asked Questions
What is the standard hem allowance for skirts and dresses?
Most sewing patterns include 2–3cm hem allowance for skirts and dresses. Always check your specific pattern. If in doubt, 2.5cm gives enough fabric for a clean double-fold hem.
How do I hem a curved skirt hem?
Curved hems require clipping or easing to lie flat. For a hem with outward curve (wider at bottom), clip into the hem allowance at intervals before pressing. For a hem with inward curve, ease the fabric gently while pressing.
What is the difference between a hem and a seam allowance?
A seam allowance is extra fabric added to pattern pieces for sewing seams. A hem allowance is extra fabric added at the bottom edge of a garment for turning up the hem. Both are separate measurements.
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