Find the measurement, then choose the size
A familiar letter on a label is not enough. Compare the seller’s measurements with a similar item you already like wearing.
Use one reliable reference
Lay a comparable garment flat without stretching it. Measure the same points shown by the seller: for example, armpit to armpit for chest width, or shoulder to hem for body length. Record the units and method with the number.
Convert centimetres and inches
Compare the converted number with the current seller measurement.
The conversion changes units only. Compare like-for-like garment measurements before selecting a label size.
Flat width and circumference are different
A flat chest width is measured across one laid-flat side. A circumference goes around the garment or body. Do not compare those numbers directly. Stretch, cut and the way a seller measures can also change the result.
Measure the part that affects your use
- Tops and jackets
- Chest width, shoulder, sleeve and body length; use a similar cut as your reference.
- Trousers
- Waist method, rise, inseam and leg opening. Ask whether an elastic waist is relaxed or stretched.
- Shoes
- Check the seller’s sizing method and any useful internal measurement. One length does not describe the whole fit.
- Bags and accessories
- Overall dimensions, usable opening and strap or belt length, including how the ends are measured.
Keep the comparison consistent
If a warehouse measurement is needed, name both endpoints: “Please measure shoulder seam to sleeve cuff with the sleeve laid flat.” Ask what the extra service costs before requesting it.