Interactive Workshop Guide

Shoe sizing: a starting estimate, followed by a fit check

Measure both feet and discuss the longer foot as well as width and instep. International size conversions and length estimates do not guarantee fit.

Back to All Notes•Care & Longevity•September 24, 2026•3 min read
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Two shoes with the same size number can fit differently. The last, toe shape, width, upper and fastening all affect the result.

Estimate a starting size

Foot length: 26.5 cm (10.4 in) · Estimated size:
41
or UK 7.5 · US men 8.5 · US women 10
Europe (EU)41
UK7.5
US men8.5
US women10
How are you starting?
EU 42 (Estimate)
How do you like your shoes to fit?
Your foot width
Height of your foot (instep)

Explore current footwear

A short selection from the footwear collection. Ask the workshop to confirm the last, width and size availability for your measurements.

View the full collection

Size chart

Adidas published size conversions, shown only as a brand-specific reference. Between listed EU points, the calculator interpolates and rounds UK/US labels to a half size.

EUUKUS menUS women

The tool estimates a length-based EU size with a selected allowance. UK and US labels use the adidas published men’s size chart only as a brand-specific reference. In-between EU estimates are interpolated and rounded to half UK/US sizes. They are not a universal brand conversion. Outside the chart, ask the workshop rather than extrapolating a size label.

Measure both feet

Measure standing on a level surface, using the socks you expect to wear. Record heel-to-longest-toe length for both feet in centimetres. A measurement of 26.5 cm (10.4 in). Discuss the larger foot and any difference between them with the workshop.

WORKSHOP DIAGRAM

Measure length and width separately

Vertical line: heel-to-toe length. Horizontal line: forefoot width. The drawing is schematic and cannot be used as a measuring template.

Measure both feet while standing. Record heel to longest toe and the widest forefoot. Ask the workshop how to take girth measurements for its selected last.

Do not buy an uncomfortably short shoe on the assumption that breaking it in will create adequate toe room. Softening of an upper does not guarantee a fit correction.

Width and instep are separate

WORKSHOP DIAGRAM

Instep volume is separate from arch shape

Lower instep volume

Check heel hold and fastening adjustment. A longer or shorter size is not automatically the solution.

Higher instep volume

Check pressure over the top of the foot and the available fastening adjustment. Ask about the last and instep girth.

The instep is the top of the foot. The arch is underneath. A side photograph or a wet footprint alone does not measure instep girth or determine shoe fit.

Extra length is not a substitute for an appropriate width or instep volume. Ask about the last and fastening, and provide girth measurements if requested. An underfoot arch picture does not establish the volume over the top of the foot.

Confirm before ordering

The SATRA overview of fitting guidelines and sizing standards distinguishes fit assessment and technical size conversion. Our estimate is not a SATRA-certified fitting assessment. Confirm the selected design and measurements directly.

Discuss footwear measurements
Action completed