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Shoe Size Converter

Unit Converters

Foot length to CN/EU/US/UK/JP sizes with full chart

Quick Answer

Shoe Size Converter: Foot length to CN/EU/US/UK/JP sizes with full chart. EU ≈ 1.5 × (foot cm + 1.5); foot 25.5cm → EU 40.

Measure in the afternoon, standing on paper
CN / EU size40.0
US (men)7.5
US (women)9.0
UK size7.0
JP (cm)25.5
Matched foot length255mm

Calculation steps

  1. 1Foot length 255 mm = 25.5 cm (Mondopoint uses millimetres directly)
  2. 2Round up to the next chart row: 255 mm (shoe should be slightly longer than the foot)
  3. 3Read across the row: EU 40 / US men 7.5 / US women 9 / UK 7 / JP 25.5 cm
Shoe size chart (by foot length)
Foot mmEUUS menUS womenUK
220353.553
22535.545.53.5
230364.564
2353756.54.5
2403867.55.5
245396.586
25039.578.56.5
255407.597
2604189.57.5
26541.58.5108
27042910.58.5
275439.5119
28043.51011.59.5
2854410.51210
290451112.510.5
29545.511.51311
300461213.511.5
Measure in the afternoon (feet swell during the day), standing on paper and tracing the outline. Athletic shoes often run half a size small. Quick estimate: EU ≈ 1.5 × (foot cm + 1.5).

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How to Use

  1. Pick units: switch source and target units in the Shoe Size Converter.
  2. Enter a value: results sync both ways instantly — no convert button needed.
  3. Use the reference table: common conversions are listed for instant lookup.
  4. Copy the result: copy the converted value with its unit.

Key Points

  • Shoe Size Converter is a free online unit conversion tool — open and use, no sign-up.
  • All calculations run locally in your browser; your data never leaves the device.
  • Key capability: Foot length to CN/EU/US/UK/JP sizes with full chart.
  • Results come with formulas and reference tables so you can verify every number.

Formula & How It Works

Shoe size conversion (Mondopoint)

EU ≈ 1.5 × (foot cm + 1.5); foot 25.5cm → EU 40
US men ≈ EU − 33; US women ≈ US men + 1.5; UK ≈ US men − 0.5
JP = foot length in cm
Measure in the afternoon, standing; athletic shoes often need half a size up

Example: 255mm foot → EU 40 / US M 7.5 / US W 9 / UK 7 / JP 25.5.

FAQ

How do I use the Shoe Size Converter?
Open the page and fill in the input fields — results update automatically. Foot length to CN/EU/US/UK/JP sizes with full chart.
Are the results accurate?
Yes. Standard formulas and conversion factors are used and verified.
Is it free? Do I need to sign up?
Completely free. No registration, login or download required.
Does it work on mobile?
Yes. The responsive design works on phones, tablets and desktops.
Is my data saved?
No. Everything runs locally in your browser.

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Source & Updates

Based on SI conversion factors and international standards. Last updated: 2025-07

Authoritative sources:

Last updated:

Formulas and content on this page are reviewed by the YiJianSuan team. For reference only — official sources prevail.

Maintained and periodically reviewed by the YiJianSuan editorial team — review process in ourEditorial Policy.

Cite this page: YiJianSuan. Shoe Size Converter[EB/OL]. https://www.yijiansuan.com/en/c/convert/shoe-size

Results provided by this tool are for reference only and do not constitute professional advice.