Italian Shoe Size to US

Italian shoe sizes use the European numbering system, so an Italian size does not match a US size with the same number. This converter changes an Italian size to a US size, or a US size to an Italian size, using separate offsets for women and men.

Men and women use different offsets, which is why mixed tables confuse readers. Women use an offset of 30 between the Italian scale and the US scale, and men use an offset of 33. A single table that does not say which offset it uses can give a different answer from a second table that uses the other offset. This page keeps the two tables apart and states both offsets openly, so the reader can see where each number came from.

How do I use the Italian shoe size to US converter?

Type the size you already know into the Size box. Half sizes are allowed, so 37.5 can be entered as it is, with no rounding needed first. Choose the direction: Italian to US when the size on the shoe or listing is Italian, or US to Italian when the size you already know is a US size. Then choose Women or Men, because the offset depends on that choice. Press the Convert Shoe Size button. The first result box shows the converted size, and the second shows the conversion used, for example "Women: Italian = US + 30". If the size is missing, zero, or below zero, or if the direction or gender has not been chosen, the tool shows "Please enter a shoe size above zero and choose a direction and gender." Nothing is uploaded or stored, because the calculation happens in the browser.

What is a worked example from the live tool?

Two live tests show how the two offsets work. In the first test, the direction was Italian to US, the gender was Women, and the size entered was Italian 38. The tool returned US 8, with the conversion shown as "Women: Italian = US + 30", because 38 minus 30 gives 8. In the second test, the direction was Italian to US, the gender was Men, and the size entered was Italian 43. The tool returned US 10, with the conversion shown as "Men: Italian = US + 33", because 43 minus 33 gives 10. Italian 40 shows why one shared table cannot serve both cases: for women it gives US 10, while for men it gives US 7. In reverse, Women with US 9 converted to Italian 39, and Men with US 11 converted to Italian 44.

Why do Italian sizes differ from US sizes?

Italian sizes follow the European system, while US sizes follow a separate US numbering system, so the two systems count from different starting points and do not share the same numbers for the same foot. That difference in starting points is why a fixed offset converts between the two systems here, and why the offset stays the same across every row of each table. The second difference sits inside the US system itself: men and women use different US numbering for the same Italian size, while sharing the Italian scale. A chart that lists Italian sizes beside a single US column, with no mention of gender, leaves the reader to guess which offset was used.

What is the women's Italian to US size chart?

The women's table is computed from the tool formula for women, where Italian equals US plus 30. To convert from Italian to US, subtract 30. To convert from US to Italian, add 30. The live test for women's Italian 38 to US 8 sits in the middle of this table.

Italian (Women)	US (Women)
35	5
36	6
37	7
38	8
39	9
40	10
41	11
42	12

What is the men's Italian to US size chart?

The men's table is computed from the tool formula for men, where Italian equals US plus 33. To convert from Italian to US, subtract 33. To convert from US to Italian, add 33. The offset is larger than the women's offset, which is why the men's US figures here are lower than the women's US figures for the same Italian size. The live test for men's Italian 43 to US 10 sits in this table, as does the reverse test for men's US 11 to Italian 44.

Italian (Men)	US (Men)
39	6
40	7
41	8
42	9
43	10
44	11
45	12
46	13

How do half sizes work in Italian to US conversion?

Half sizes work in the same way as whole sizes here, because the offset is added or subtracted without any extra step. Add 0.5 on both sides of a conversion pair to move from a whole size to the next half size. For women, Italian 38 gives US 8, so Italian 38.5 gives US 8.5. A live test confirms this: Women with Italian 37.5 converted to US 7.5, because 37.5 minus 30 gives 7.5. Half sizes matter because some charts round them up or down, or leave them out, forcing the reader to guess. This tool accepts half sizes directly, so no rounding is needed before converting.

How do I measure my foot length, and why does it help?

Foot length gives a second check that does not depend on a size label. Stand on a sheet of paper with the foot flat and the weight spread as it would be when standing normally. Mark the back of the heel and the tip of the longest toe, then measure the straight distance between those two marks. Measuring both feet is useful, because feet are not always the same length, and the longer foot is the one that decides which size is less likely to feel tight. Size numbers are labels that brands apply to their own shapes, so a foot length figure can be compared with any measurement range a brand publishes, where one is published. It does not remove brand variation, and it does not turn a conversion into a fit promise.

Why do size charts disagree with each other?

Charts disagree for several reasons. The first is the mixed-table problem: a chart that does not separate women and men, or does not state its offset, can give a US figure three sizes away from a gendered chart for the same Italian size. The second is half-size rounding, since a chart that rounds half sizes or leaves them out can differ from a chart that keeps them. The third is brand variation, since a chart built from one brand's sizes can differ from a chart built from another brand's sizes. A fourth reason is unisex tables, which treat one US column as if it fits everyone and hide the offset difference. Top results mix women's and men's tables, disagree by half a size, and rarely explain the two different offsets. This page separates women and men, states both offsets openly, and warns about brand variation instead of presenting one table as universal.

What should I check before ordering shoes in another size system?

General shopping checks, rather than fit promises, are the useful habit here. One check is the brand's own size chart, because that chart describes the shoes actually being sold, while a general chart describes the numbering systems. A second check is foot length, compared with any measurement range the brand publishes, where one is published. A third check is the return policy for the shop or listing, including who pays for a return and how long the return window lasts. A fourth check is the listing itself: confirming whether the size shown is the Italian size, the US size, or a size in a third system, before entering any figure into the converter. Those checks do not guarantee fit. Shoppers who also use other converters may find the same habit useful elsewhere: the Unit Converter and the Mass Converter cover different kinds of conversion, and the Converters hub gathers the converter tools in one place.

What are the most common mistakes when converting Italian shoe sizes?

The most common mistake is using the women's offset for men's shoes, or the men's offset for women's shoes. That single slip moves the result by three sizes, far larger than the half-size variation brands introduce, so it is worth checking first whenever a converted size looks surprising. A second mistake is assuming Italian 40 means the same US size for men and women. It does not: Italian 40 gives US 10 for women and US 7 for men here. A third mistake is ignoring half sizes: rounding Italian 37.5 down to 37 before converting gives US 7 for women, while the live tool gives US 7.5. A fourth mistake is converting the wrong figure from a listing that shows several systems at once. In each case, confirm the figure on the listing, the direction, the gender, and the conversion shown in the second result box.

What are the limits of this converter?

This converter covers the sizes in the tables above and the half sizes between them, using the two fixed offsets of 30 for women and 33 for men. It does not cover sizes outside those ranges, and it does not adjust for width, shape, or differences between shoe styles, because those factors are not part of a numbering conversion. Brand variation is the second limit. Italian sizes follow the European system, but brands vary by about half a size and sometimes more, so always check the brand's own size chart and, where possible, your foot length before ordering. This page converts sizes, and it does not guarantee fit.

What do shoppers most often ask about Italian shoe size to US conversion?