Shoe size recommender

Enter your foot length and a brand. We map the length to a base size, then nudge it for how that brand typically fits — so you start from a better guess than a generic chart.

Last updated June 2026 · ARFits Editorial

Find your size

Tip: measure heel to longest toe, standing.

How this recommendation is calculated

  1. Your foot length is converted to millimetres if needed.
  2. We add a small fitting allowance (≈10 mm) to your bare foot length, then convert to a base EU size using the standard relationship EU ≈ (foot length in cm + ~1.5) × 1.5. EU is then mapped to US and UK using standard tables.
  3. We apply the selected brand's typical fit offset. If a brand tends to run small, we nudge the suggestion up; if it runs large, down; and leave it for true to size.

This is a starting estimate based on widely-used conversion values and generalised brand reputations — individual models, lasts, and widths vary. Brand offsets are directional guidance, not official sizing. A guided AR foot scan that also captures ball girth gives a more reliable per-model result; see how foot scanning works.

Need to convert between systems instead? Use the shoe size converter.