📏 Shirt Size Calculator
✨ shirt size calculator — universal tool that converts your body measurements into precise
shirt sizes across 10+ international standards (USA, UK, EU, Japan, Australia, China, Korea & more).
Perfect for online shopping, whether you’re in New York, London, Tokyo or Berlin. Get instant recommendations,
visual chest mapping, and detailed fit factors based on US guidelines and global equivalents.
💡 US size factor info: Chest measurement is the primary factor for US letter sizes.
Height influences length, weight indicates body type – system cross checks for tall/plus fit notes.
📌 Your recommended shirt size
Standard fitM
🌎 Worldwide size equivalents
| Country / Region | Size Label | Equivalent / Numeric |
|---|---|---|
| USA / Canada | M | 38-40″ chest |
| UK / Australia | M | 38-40″ chest |
| EU (DE/FR/IT) | 48 | Regular |
| Japan (JP) | M | Loose fit / 92-96cm |
| China (CN) | 170/88 | M |
| Korea (KR) | 95-100 | M |
📊 Factor breakdown (USA standard): Chest 39.0″ → size M.
Height and weight within balanced range: regular fit recommended.
✨ Balanced proportions → ideal standard size.
📈 Chest size mapping (inches) — size zone visualizer
*Graph shows sizing zones based on gender & chest measurement. Marker = your chest value.
❓ Frequently asked questions — shirt sizing insights
How does the shirt size calculator determine international sizes?
It uses your chest/bust measurement (primary) and then maps to universal letter sizes (XS–XXL). Based on that letter, it cross-references conversion tables from US, UK, EU numeric, Japan, Korea, China, Australia — reflecting actual garment standards worldwide.
What’s the difference between male and female sizing in this tool?
Male uses traditional chest circumference ranges (e.g., S: 34-37″), female uses bust-based ranges (e.g., S: 32-34″). Both produce different letter outputs and global equivalents, offering a more accurate fit recommendation.
Why do height and weight matter in the advanced calculator?
They indicate if you need “tall” or “athletic” variations. For example, chest size M but height > 6’2″ may suggest a tall fit; weight mismatch helps detect size adjustments beyond chest width (e.g., broader shoulders).
Can I trust these conversions for online shopping worldwide?
Yes. The values follow ISO 8559 and major apparel brand guidelines. However, always check specific brand size charts — this gives a perfect starting point (accurate ± one size).