On Running to Nike Shoe Size Converter

Convert On Running US/EU/UK shoe sizes to Nike 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 On Running (-1 mm) and Nike (+0 mm) in exact millimeter steps.

On Running → Nike — Quick Reference Table

Quick Reference Table
On Running USFoot Length (mm / cm)Nike USEU Size
US 7249 mm (24.9 cm)US 7EU 39.5
US 8259 mm (25.9 cm)US 8EU 41
US 8.5264 mm (26.4 cm)US 8.5EU 42
US 9269 mm (26.9 cm)US 9EU 42.5
US 9.5274 mm (27.4 cm)US 9.5EU 43.5
US 10279 mm (27.9 cm)US 10EU 44
US 10.5284 mm (28.4 cm)US 10.5EU 45
US 11289 mm (28.9 cm)US 11EU 45.5
US 12299 mm (29.9 cm)US 12EU 47

Common Questions

1 Answers

How do I convert On Running to Nike using Mondopoint millimeters?

Check your exact foot length in centimeters/millimeters (ISO 9407 Mondopoint) and apply On Running (-1 mm) vs Nike (+0 mm) last offsets.

More Helpful Comparisons & Presets

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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.

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