What is this calculator?
Compare approximate adult men’s US, UK and EU shoe sizes.
What can you use it for?
Use it for practical planning, conversions, measurement or checking the result described here. Compare approximate adult men’s US, UK and EU shoe sizes.
How to use it
- Enter adult men’s us size.
- Select Calculate (or Generate for random tools).
- Read the answer and any additional results below the form. Check the units and the limits of the method.
Formula and method
Approximate adult men’s comparison: UK ≈ US − 1; EU ≈ 39 + (US − 6) × 4/3
This comparison is illustrative and must be checked against the intended manufacturer’s size chart.
Worked example
Adult men’s US size: 9. The result is US 9 · UK 8 · EU ≈ 43 (approximate adult men’s sizes).
Assumptions and limits
Approximate reference table. Brand lasts and sizing vary; use the manufacturer’s size guide.
Frequently asked questions
What inputs does the Shoe Size Conversion need?
Use adult men’s us size. Read the answer and any additional results below the form. Check the units and the limits of the method.
What assumptions apply to the Shoe Size Conversion?
Approximate reference table. Brand lasts and sizing vary; use the manufacturer’s size guide.