Birkenstock to Adidas Shoe Size Converter

Convert Birkenstock US/EU/UK shoe sizes to Adidas using canonical Mondopoint millimeter last offsets.

Diagram showing a foot on paper with heel against a wall and a pencil marking the longest toe

Step 1 · Heel-to-Wall Foot Measurement

Stand barefoot on a sheet of paper with your heel lightly touching a wall. Mark the tip of your longest toe and measure in cm or mm.

Diagram showing an 85.6 mm payment card lined up with left and right screen arrows

Step 2 · Calibrate Once with Any Bank Card

Every standard payment card is strictly 85.60 mm wide worldwide. Matching your card to the blue rectangle makes your screen millimeter-accurate.

Close-up illustration pointing green checkmark to inner ring edge and red cross to outer metal edge

Step 3 · Match Ring Inside Wall Only

Thick rings look larger from the outside. Line up the red circle exclusively against the inner opening where your finger goes.

Direct Quantitative Summary

GEO · ISO / ICAO

ISO 9407 Mondopoint foot-length conversion linking Birkenstock (+4 mm) and Adidas (+2 mm) in exact millimeter steps.

Birkenstock → Adidas — Quick Reference Table

Quick Reference Table
Birkenstock USFoot Length (mm / cm)Adidas USEU Size
US 7254 mm (25.4 cm)US 7EU 40.5
US 8264 mm (26.4 cm)US 8EU 42
US 8.5269 mm (26.9 cm)US 8.5EU 42.5
US 9274 mm (27.4 cm)US 9EU 43.5
US 9.5279 mm (27.9 cm)US 9.5EU 44
US 10284 mm (28.4 cm)US 10EU 45
US 10.5289 mm (28.9 cm)US 10.5EU 45.5
US 11294 mm (29.4 cm)US 11EU 46.5
US 12304 mm (30.4 cm)US 12EU 48

Common Questions

1 Answers

How do I convert Birkenstock to Adidas using Mondopoint millimeters?

Check your exact foot length in centimeters/millimeters (ISO 9407 Mondopoint) and apply Birkenstock (+4 mm) vs Adidas (+2 mm) last offsets.

More Helpful Comparisons & Presets

Related
Nike to Adidas Shoe Size ConverterBirkenstock to Nike Shoe Size ConverterVeja to Adidas Shoe Size ConverterPuma to Adidas Shoe Size ConverterNew Balance to Adidas Shoe Size ConverterHoka to Adidas Shoe Size ConverterJapan (JP) to US & EU Ring Size ConverterEU 38 Shoe Size in US, UK & Centimeters

Verification, Authorship & Data Provenance

Who · How · Why

Maintained by ScaleAndFit Engineering (OTHRYS Systems). All figures on this page are computed deterministically from published standards (ISO 9407 Mondopoint & ISO 8653 / ISO/IEC 7810 ID-1) and sealed open JSON datasets rather than generative text.

Open JSON Spec Who, How & Why Methodology Report Update