How to Read Online Size Charts
— Flat vs Circumference
Open the garment size chart before the “recommended size” table. Match shoulder, chest, and length (or waist, hip, rise, inseam for pants) to your notes within about ±1–2 cm. Letters and height/weight suggestions are secondary.
Contents
- Why charts beat “recommended size”
- Tops — three numbers that matter
- Pants — four numbers that matter
- Flat vs circumference
- 60-second checkout checklist
- Review search words
- FAQ
1. Why charts beat “recommended size”
I used to buy from height/weight suggestion tables on Musinsa and other shops: “175 cm / 78 kg → L.” The letter was often “right” and the garment still felt wrong — shoulders off, length long, pants waist OK but thighs failing.
Every brand grades L differently. Compare your measurement notes to listed garment specs. For intentional oversize failures, see the 2XL oversize guide.
2. Tops — three numbers
| Field | What to compare | My habit |
|---|---|---|
| Shoulder | Shoulder width / across shoulder | ±1 cm; +2–3 cm only if I want oversize |
| Chest | Often half-chest on KR charts | Convert flat ↔ circumference before comparing |
| Length | Total length / body length | Too long shortens the leg line at 175 cm |
Measure shoulders alone: shoulder width guide. No tape: hand-span measuring.
3. Pants — four numbers
| Field | Why | Fail pattern |
|---|---|---|
| Waist | Label 32 ≠ same cm everywhere | Waist OK, hip/thigh fail |
| Hip | Sitting stretch | Tight seat when you sit |
| Rise | Crotch comfort | Short rise digs or rides wrong |
| Inseam / length | Hem stacks or floats | Looks shorter even if waist fits |
Related: WHR & jeans gap · pants silhouettes · thick thighs & short rise.
4. Flat vs circumference
Korean charts often list half-chest (garment laid flat). A “chest 55” is often ~110 cm circumference. US/EU charts more often list full circumference — never mix units.
5. 60-second checklist
- Phone note: shoulder / chest / length (or waist / hip / rise / inseam)
- Same unit as the chart (flat vs full)
- Target within ±1–2 cm (or intentional oversize on shoulder only)
- Height/weight “recommended size” is reference only
- Unsure? Leave in cart and recheck tomorrow
6. Review search words
- Tops: shoulder, seam, length, sleeve, boxy, tight
- Pants: thigh, rise, inseam, gape, hip
7. FAQ
Is chest 55 cm circumference?
Often half-chest on KR charts. Roughly double for circumference.
I wear L — buy L?
Compare cm, not letters.
No chart?
Weak signals only — I usually skip no-spec oversize.
Disclaimer: Style and shopping education only. Not medical, diet, or growth advice. Garment measurements follow seller charts.