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Shoe Size Calculator

Estimate shoe size conversion from us or canada women, us or canada men, uk or india with the Shoe Size Calculator.

Choose the size you knowConvert approximate adult shoe sizes across supported regional systems.
7 options
SHOE SIZE CONVERSION43 EU size

Adult approximation · US/Canada women 11 · US/Canada men 10 · UK/India 9 · EU 42.64 · Japan/Mexico 27.09 · China 44.19 · foot length 27.09 cm

Estimate based on the values shown
MethodAdult approximations from foot length: US men = 3L(in)−22; US women = 3L(in)−21; EU = 1.5L(cm)+2; China = 2L(cm)−10.

Before you use the result

Check the entered units and assumptions before using the result for purchasing, construction, engineering, or safety decisions.

CALCULATOR GUIDE

How to use the Shoe Size Calculator

Estimate shoe size conversion from us or canada women, us or canada men, uk or india with the Shoe Size Calculator. It includes US/Canada women, US/Canada men, UK/India, European (EU), Japan/Mexico, China workflows, so choose the one that matches the values you actually know. Use it to check a practical estimate, paying close attention to the selected units and assumptions.

Step by step

  1. For the Shoe Size, enter us or canada women, us or canada men, uk or india, eu, japan or mexico. Keep each value in the unit displayed beside its field.
  2. Review the selected Shoe Size workflow and inputs, then read shoe size conversion in the result panel.
  3. Change one Shoe Size assumption at a time to compare scenarios. Use Reset to restore this tool's worked example values.

How the calculation works

Adult approximations from foot length: US men = 3L(in)−22; US women = 3L(in)−21; EU = 1.5L(cm)+2; China = 2L(cm)−10.

Worked example

In the Shoe Size worked example, us or canada women 11, us or canada men 10, uk or india 9, eu 43 produces shoe size conversion of 43 EU size. Adult approximation · US/Canada women 11 · US/Canada men 10 · UK/India 9 · EU 42.64 · Japan/Mexico 27.09 · China 44.19 · foot length 27.09 cm. Review the displayed units before comparing the result.

Understanding the result

The Shoe Size reports shoe size conversion. Use it to check a practical estimate, paying close attention to the selected units and assumptions. Check the entered units and assumptions before using the result for purchasing, construction, engineering, or safety decisions.

How to check the answer

Check the Shoe Size result by reversing the conversion or recomputing shoe size conversion from us or canada women, us or canada men, uk or india. For construction, electrical, weather, or purchasing decisions, compare the result with the applicable specification or professional guidance.

Common questions

What does the Shoe Size calculate?

Estimate shoe size conversion from us or canada women, us or canada men, uk or india with the Shoe Size Calculator.

Which Shoe Size inputs have the biggest effect?

shoe size conversion responds directly to us or canada women, us or canada men, uk or india, eu, japan or mexico. Change one input while holding the others constant to see its effect.

Is the Shoe Size result exact?

Check the entered units and assumptions before using the result for purchasing, construction, engineering, or safety decisions. Recheck us or canada women, us or canada men, uk or india and use shoe size conversion only for a decision where that level of precision is appropriate.

Formula tests, limits, sources, and guide registry updated September 1, 2026.
INTERPRET THE RESULTRead the other guideCheck assumptions, limitations and comparison methods →