Introduction
Exporting garments from Peru to the world’s most demanding markets requires, in addition to quality and timely delivery, a precise adaptation to international sizes. A measurement error can generate returns, extra costs, and damage the brand’s reputation. In this guide, aimed at fashion entrepreneurs, clothing brands, and international buyers, we explain step‑by‑step how to translate Peruvian sizes to the US, European, and Asian systems, with practical examples from the Peruvian textile sector.
1. Why Sizes Differ
The differences arise from historical, anthropometric, and consumer‑habit factors. While the US uses the "size" system (S, M, L, XL) based on inch measurements, Europe adopts numbers (34, 36, 38…) and Asia combines both, often with tighter cuts. Knowing these distinctions allows you to create reliable conversion tables and avoid surprises in the supply chain.
2. Size System in Peru
In the local market, most manufacturers follow the Perú‑Talla standard, which aligns with ISO 8559‑1. Measurements are expressed in centimeters and grouped in ranges that usually match European sizes, with slight variations in waist and bust.
- XS: Bust 80‑84 cm, Waist 64‑68 cm, Hip 86‑90 cm
- S: Bust 84‑88 cm, Waist 68‑72 cm, Hip 90‑94 cm
- M: Bust 88‑92 cm, Waist 72‑76 cm, Hip 94‑98 cm
- L: Bust 92‑96 cm, Waist 76‑80 cm, Hip 98‑102 cm
- XL: Bust 96‑100 cm, Waist 80‑84 cm, Hip 102‑106 cm
These values are the starting point for conversion.
3. Conversion to US Sizes
The US uses a scale based on inches (1 in = 2.54 cm). A typical conversion table is:
| Peru | US | Measurements (in) |
|---|---|---|
| XS | 2‑4 | Bust 31‑32, Waist 25‑26, Hip 34‑35 |
| S | 4‑6 | Bust 33‑34, Waist 27‑28, Hip 36‑37 |
| M | 8‑10 | Bust 35‑36, Waist 29‑30, Hip 38‑39 |
| L | 12‑14 | Bust 37‑38, Waist 31‑32, Hip 40‑41 |
| XL | 16‑18 | Bust 39‑40, Waist 33‑34, Hip 42‑43 |
When producing in Peru, round measurements to the nearest whole number and communicate the equivalence clearly to US buyers.
4. Conversion to European Sizes
Europe uses even numbers (34, 36, 38…) that roughly correspond to the bust measurement in centimeters divided by 2. The most used reference chart is:
- XS → 34‑36
- S → 36‑38
- M → 38‑40
- L → 40‑42
- XL → 42‑44
Practical example: a Peruvian blouse in size M (bust 90 cm) translates to EU size 40 (90 ÷ 2 ≈ 45, but it is adjusted to the standard 38‑40 range). At Confecciones Roly we use grading software that incorporates these rules and generates tech packs with both designations.
5. Conversion to Asian Sizes
In Asia—especially China, Japan, and Korea—the nomenclature mixes numbers and letters (S, M, L) but the cuts are tighter. The most accepted reference table is:
| Peru | China/Japan | Measurements (cm) |
|---|---|---|
| XS | S | Bust 78‑82, Waist 60‑64 |
| S | M | Bust 82‑86, Waist 64‑68 |
| M | L | Bust 86‑90, Waist 68‑72 |
| L | XL | Bust 90‑94, Waist 72‑76 |
| XL | XXL | Bust 94‑98, Waist 76‑80 |
To avoid rejections, request the buyer’s own size guide and compare it with the table above.
6. Recommended Tools and Processes
1. Grading and PLM software: platforms such as Gerber AccuMark or Lectra let you load the Peruvian table and export patterns for international systems.
2. Physical samples with dual labeling: when sending prototypes to the US, Europe, or Asia, include a label that shows both sizes (e.g., "M / 38 EU / 10 US").
3. Fit tests with local models: in Lima, hire models whose measurements represent each target market. Confecciones Roly has built an international model pool that streamlines this process.
7. Case Study: Exporting Cotton T‑shirts
A European brand requested 5,000 t‑shirts in size M. The team at Confecciones Roly followed these steps:
- Measured the base Peruvian size (bust 92 cm, waist 76 cm).
- Consulted the US conversion table and determined the equivalent is EU size 40.
- Adjusted the pattern by +2 mm at the chest and +1 mm at the waist to meet the European slim‑fit preference.
- Generated tech packs with both size designations and sent them to the brand for approval.
- Conducted a fit test with a European model residing in Peru, confirming the equivalence.
Result: on‑time delivery, zero returns, and an expanded business relationship for new styles.
8. Best Practices to Avoid Errors
- Always document the conversion table used for each order.
- Request tolerance specifications (±0.5 cm) from the client.
- Perform dimensional quality control on at least 5 % of the production.
- Update tables every 2‑3 years, as standards can shift.
- Use clear, bilingual labeling (Spanish‑English‑local).
Conclusion
Mastering international size conversions is essential for Peruvian fashion entrepreneurs and foreign brands to trust the country’s textile industry. With a solid database of Peruvian measurements, grading tools, and the expertise of manufacturers like Confecciones Roly, it is possible to produce garments that meet the requirements of the US, Europe, and Asia, reducing costs and strengthening the "Made in Peru" reputation in global markets.