How hijab sizing works
Hijabs fall into two sizing families. Wrap-and-pin styles, rectangles and squares, are sold by their flat dimensions: length and width, or side length. Shaped styles, instant hijabs, caps, underscarves, al-amira sets, sports hijabs and kids' styles, are sold by fit: head circumference, stretch and, for kids, age range. Khimars and prayer garments add a length measurement, because they fall over the shoulders and further. Each family is measured and described differently, and each needs its own lines on the spec sheet.
Rectangle and square sizes
Rectangle hijabs are the most common shape. Wholesale listings commonly show sizes around 70x180 cm, which is about 27.5x71 inches. Square hijabs, folded into a triangle, are commonly listed around 110-120 cm a side, which is about 43-47 inches. These are common listing sizes, not standards: length and width vary by fabric and by the styles your customers favor, and the exact size is confirmed on the spec sheet.
| Style | How it is sized | Common listing size | On the spec sheet |
|---|---|---|---|
| Rectangle (shawl) | Length x width, measured flat | Around 70x180 cm (about 27.5x71 in) | Exact size and tolerance |
| Square | Side length, measured flat | Around 110-120 cm (about 43-47 in) | Exact size and tolerance |
| Instant hijab | Head circumference and stretch | Sized per style | Opening, length, stretch |
| Cap or underscarf | Head circumference and stretch | Sized per style | Circumference, elastic or tie |
| Kids' styles | Age range | Set per range | Measurements per age range |
| Khimar and prayer garments | Opening and length from crown | Set per style | Lengths at front and back |
Choosing rectangle dimensions
Length decides how many ways a rectangle can be wrapped and how far it reaches. A longer piece suits wraps that cover the chest and styles with a loose end over the shoulder. Width decides how much fabric frames the head and how the scarf folds. Light fabrics such as chiffon are often cut generously because they gather softly; heavier jersey may be cut a little narrower so wraps do not become bulky. If your customers favor a particular style, ask a few of them to try samples in two lengths before you fix the size. Our guide to styling a rectangle hijab shows which wraps need more length.
Squares and the triangle fold
A square is worn folded into a triangle, so its side length decides how far the triangle reaches at the back and how much fabric is available to pin under the chin. Larger squares give more coverage and more styling options; smaller squares suit lighter looks and children. Prints need special attention: if a border or motif is meant to frame the face, the artwork must be placed for the folded triangle, not just the flat square. See wearing a square hijab.
Instant hijabs and caps: head circumference and stretch
Instant hijabs and caps are sized by head circumference, measured around the head across the forehead and above the ears. Because most of these styles are made in jersey or cotton-spandex, the stretch of the fabric matters as much as the cut. Two caps with the same measured opening can fit very differently if one fabric stretches more than the other. Write the relaxed circumference, the stretch expected from the fabric and the construction, elastic, tie-back or tube, on the spec sheet. Many ranges cover adults with one or two sizes and adjust after a wear trial. See instant hijabs and underscarves and caps.
Kids' sizing by age range
Kids' hijabs are usually instant styles sold by age range, with each range carrying its own measurements on the spec sheet. Ages are a guide only, because head sizes vary widely between children of the same age, so list the measurements alongside the age range on the product page. In the United States, products designed for children 12 and under are children's products, with testing and certificate requirements where they apply; ties on children's caps should be reviewed against drawstring guidance. Read kids' hijabs.
Khimars, prayer garments and sports hijabs
Longer styles are sized by the face opening and by length from the crown to the hem at front and back. Prayer garments add the length of the skirt piece where there is one. Sports hijabs are sized by head circumference and neck coverage, with a back length that stays tucked during movement. For each, the spec sheet records the measurement points so bulk can be checked the same way as the sample.
Tolerances and shrinkage
No two cut pieces are identical. Agree a tolerance for each measurement in writing, and check bulk against it during inspection. Fabrics can also shrink after washing, especially some viscose and cotton qualities, so test shrinkage on the sample and decide whether the cut size needs to allow for it. The care label should match the washing method used in the test. See shrinkage and colorfastness.
Showing sizes to customers
Show sizes in both centimeters and inches, in the same order, on every page. For rectangles and squares, a flat lay with a tape measure in frame helps. For caps and instant styles, a short note on how to measure head circumference reduces returns. When your sizes are set, they go into the spec sheet with your fabrics and colors; send them through the sample request form and sizes are confirmed in writing before sampling.
A sizing checklist for a new range
Before any order is confirmed, run through the same short list for every style in the range. It takes an hour and prevents most size-related surprises later.
- Fix the dimensions. Length and width for rectangles, side length for squares, chosen from samples, not from a listing.
- Record the measurement method. Flat, relaxed, points measured from and to.
- Set tolerances. An agreed allowance per measurement, in writing.
- Test stretch and shrinkage. Stretch for caps and instant styles; shrinkage on the fabric after washing.
- Run a wear trial. A size set tried by real wearers, with notes.
- Write the page. Sizes in cm and inches, the same order every time, plus a how-to-measure note for caps.
Sizes chosen this way rarely need to change again, which keeps later reorders simple and product pages accurate for years.