Swimwear · Easy
Rash guard sewing pattern
Raglan shirt for swimming or surfing.
Choose your size
Each size has its own page with the full pattern, the cutting list and the measurements used.
Women's sizes (with bust)
Pattern preview
Sewing instructions
General steps to sew this garment. Seam allowance is 1 cm (3/8") unless stated otherwise.
Supplies
- Swim lycra or technical knit
- Matching thread and the right needle
- Print the pattern at 100%, check the test square and cut the pieces following the cutting list. Transfer notches, darts and button marks.
- Cut with the greatest stretch running horizontally (around the body). Use pattern weights instead of pins so the knit does not distort.
- Sew knits with a serger or a stretch stitch (narrow zigzag) and a ballpoint needle.
- Join the raglan sleeves to the front and back; watch the notches (double notch = back).
- Sew the underarm and side seam in one go, matching the armhole seams.
- Close the neckband into a loop, fold it in half lengthwise and sew it to the neckline, stretching it slightly more than the garment, matching quarter points.
- Fold up the hems (sleeves and body) and stitch with a twin needle or zigzag so they keep their stretch.
Cutting list
| Piece | Cut | Material |
|---|---|---|
| Front | 1× | Main fabric |
| Back | 1× | Main fabric |
| Sleeve | 2× | Main fabric |
| Neckband | 1× | Main fabric |
Measurements needed
| Measurement | How to measure |
|---|---|
| Biceps circumference | Around the widest part of the relaxed upper arm. |
| Neck circumference | Around the base of the neck, where a shirt collar sits. |
| Chest/bust circumference | Around the torso at the fullest part of the chest, tape level. |
| Hip circumference | Around the hips, at the level of the hip bones. |
| Waist to hips | Along the side, from the waist to the hip line. |
| Back length | From the high shoulder point, down the back, to the waist. |
| Waist to armpit | Vertically along the side, from the waist to the armpit. |
| Wrist circumference | Around the wrist, over the bone. |
| Arm length | From the shoulder point to the wrist, arm slightly bent. |
FAQ
Is the rash guard pattern really free?
Yes. Every Kutopy pattern is free, with no sign-up and no watermarks. You can sew and sell what you make.
Which measurements do I need?
This pattern uses 9 body measurements. If you don't know them, pick a standard size or follow our measuring guide.
Does it include seam allowance?
Yes, it includes 1 cm (3/8") seam allowance (outer dashed line). You can remove it in the editor.
How do I print it at full scale?
In the editor pick your paper and tap "Download PDF". At home: numbered Letter or A4 pages you tape together. At a print shop or plotter: full size on one sheet, a 36" roll or large sheets. Always print at 100% and check the 10 × 5 cm test square.
