Aisha K.
Mar 12, 2026
Clean layout and the results update instantly. Exactly what I needed for a quick planning check.
Unit Converters
Shoe Size Converter (US, EU, UK, CM)
EU ≈ US men + 33; EU ≈ US women + 31; cm ≈ EU × 2/3; UK men ≈ US − 0.5.
US, UK, EU, and Mondopoint (cm) through Paris points: EU × 2/3 ≈ foot length in cm. Brands last differently. A US men’s 9 is about EU 42; women’s US 9 is about EU 40. Try the pair on.
What you know
Adult last
EU 42
Brands last differently.
- US
- 9
- UK
- 8.5
- cm
- 28
Plain-English guide
Terms & how it works
Confused by a field? Read the short definitions here while you use the tool.
Size
The “Size” value used in this tool’s formula. Adjust it to see results update live.
How this calculator works
US, UK, EU, and Mondopoint (cm) through Paris points: EU × 2/3 ≈ foot length in cm. Brands last differently. A US men’s 9 is about EU 42; women’s US 9 is about EU 40. Try the pair on. EU ≈ US men + 33; EU ≈ US women + 31; cm ≈ EU × 2/3; UK men ≈ US − 0.5. Example: US men 9 → EU 42, UK 8.5, ~28 cm. US women 8 → EU 39, UK 6.
EU ≈ US men + 33; EU ≈ US women + 31; cm ≈ EU × 2/3; UK men ≈ US − 0.5.
Example: US men 9 → EU 42, UK 8.5, ~28 cm. US women 8 → EU 39, UK 6.
When to use this Shoe Size
Common use cases
- US, UK, EU, and Mondopoint (cm) through Paris points: EU × 2/3 ≈ foot length in cm. Brands last differently. A US men’s 9 is about EU 42; women’s US 9 is about EU 40. Try the pair on.
- Sanity-check with this case: US men 9 → EU 42, UK 8.5, ~28 cm. US women 8 → EU 39, UK 6.
- The relationship is: EU ≈ US men + 33; EU ≈ US women + 31; cm ≈ EU × 2/3; UK men ≈ US − 0.5.
Localized examples
- Unit Converters: the example on this page uses the same formula as the widget.
What you get
- Fields: Size
- EU ≈ US men + 33; EU ≈ US women + 31; cm ≈ EU × 2/3; UK men ≈ US − 0.5.
- Example on the page: US men 9 → EU 42, UK 8.5, ~28 cm. US women 8 → EU 39, UK 6.
How to Convert Shoe Size Step-by-Step
- 1Enter Size. Use the values you have, not a catalog average, unless that is all you know.
- 2EU ≈ US men + 33; EU ≈ US women + 31; cm ≈ EU × 2/3; UK men ≈ US − 0.5.
- 3Worked case: US men 9 → EU 42, UK 8.5, ~28 cm. US women 8 → EU 39, UK 6.
- 4Check which dictionary the other person is using — US or UK, decimal or 1,024 — then trust the number.
Governing formula
EU ≈ US men + 33; EU ≈ US women + 31; cm ≈ EU × 2/3; UK men ≈ US − 0.5.
US men 9 → EU 42, UK 8.5, ~28 cm. US women 8 → EU 39, UK 6.
Example: set Size = 9, then read the result.
Variable definitions
- value
Size
The “Size” field. Default 9; typical range 3–16.
- The conversion (EU ≈ US men + 33; EU ≈ US women + 31; cm ≈ EU × 2/3; UK men ≈ US − 0.5.) does not pick US vs UK gallons, SI vs binary megabytes, or Mach at altitude for you. Read the footnote on the page.
- Nothing here is uploaded for the calculation itself.
Frequently Asked Questions
Kids’ scales jump. This page is adult men/women lasts.
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Reviews & Ratings
See what others think about this tool, then leave your own rating to help improve CalculioHub.
4.8
out of 5.0
4 reviews
Daniel R.
Feb 28, 2026
Very usable on mobile. Would love a save/export option later, but the math feels solid.
Priya S.
Feb 3, 2026
The FAQ section answered my questions before I even had to search. Smooth dark mode too.
Marcus L.
Jan 19, 2026
Simple inputs, clear outputs. This replaced three bookmarks I used to juggle.
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