How to Trim a Tank Top: Cut, Hem and Style

To trim a tank top, first put it on with the pants, shorts, or skirt you plan to wear and decide where you want the hem to fall. Mark that point with washable fabric chalk, then add extra length if you plan to fold and sew a hem; leaving about an inch gives you room for a narrow double fold.

Wash and dry the tank according to its care label before cutting, since a change in size afterward can affect the finished length. Lay it flat on a smooth surface, align the side seams and bottom edges, and use a ruler to draw a straight cutting line across the front and back.

Use sharp fabric scissors to cut along the marked line, keeping the material flat without stretching it; you can cut through both layers together if they are aligned, or cut each layer separately for more control. Start longer than you think you need, try the tank on, and make small adjustments until you like the length.

For a sewn finish, fold the raw edge inward twice, pin or clip it in place, and stitch around the hem using a stitch suited to the fabric, such as a stretch stitch for stretchy knit. If you prefer a raw edge, leave it unsewn and expect the appearance to change with wear and washing; some knit edges roll, while woven fabrics can fray.

A slightly cropped hem can sit near the waistband of high-rise jeans, while a longer cut offers more coverage when you raise your arms or sit down. For more ideas, explore our tank top trimming and styling guide or browse our Trim Crop Tank Tops.