The new gender-swap badge, step by step
Previously, going from "I know my women's US 8" to "what's that in men's sizing" meant either remembering the roughly-1.5-to-2 offset yourself, or manually switching to the men's tab and guessing a starting size to check against. The new badge removes that step entirely: it sits directly below the main result, styled like the other result cards, and reads something like "Women's US 8 ≈ Men's US 6.5" alongside a button.
| You entered | Active tab | Badge shows | Button action |
|---|---|---|---|
| US 8 | Women's | ≈ Men's US 6.5 | Switch to Men's → |
| US 9 | Men's | ≈ Women's US 10.5 | Switch to Women's → |
| 27 cm foot length | Men's | ≈ Women's US 10.5 | Switch to Women's → |
Tapping the button doesn't just show you a number — it actually switches the active tab and re-runs the conversion using the equivalent size, so the result card, reference highlight, and any other on-page context update to match. That matters for the gifting use case: say a friend mentions their usual size is a women's US 7.5 and you want to buy them a men's-cut sneaker that only lists men's sizes. Enter 7.5 on the women's tab, read the badge, tap through, and the men's-tab result is sitting there ready to check against the specific shoe's own size guide.
It's still a length-based conversion, not a guarantee of fit — men's and women's lasts are typically shaped differently through the width, a point covered in more detail in an earlier guide on cross-gender shoe shopping. But for the specific job of turning "I know one number" into "here's the other chart's equivalent number," the badge collapses what used to be a manual lookup into one tap.
The new infant/baby rows in the kids' chart
The kids' chart used to start around the smallest toddler sizes, which left a gap for anyone shopping for a baby who isn't walking yet or has only just started. That gap is now filled directly inside the existing kids' reference table: a new "Infant / baby shoe sizes by age (0-24 months)" block lists US, EU, UK sizing alongside an approximate age column and a foot-length column in both centimeters and inches.
The practical difference from a general kids' chart is granularity. A toddler-and-up table steps in whole sizes that can span a meaningful chunk of a baby's early growth in one row; the new infant sub-section breaks that same stretch into finer bands, matching how quickly foot length changes in the first year or two. It's shown as a distinct block within the kids' table (not folded invisibly into the toddler rows), so it's easy to spot which section applies to a baby versus an older child.
As with the rest of the kids' chart, age is shown only as a rough secondary guide next to the foot-length column, because two babies of the same age can measure noticeably differently. If you have an actual foot-length measurement in hand, it's still the more reliable way to read the table — the age column is there mainly to help you find the right neighborhood of rows quickly.
Why these two additions, together
They look unrelated on the surface — one's about adult gifting, the other about babies — but both come from the same root complaint: the converter already had the right underlying data (foot length in centimeters maps to every chart), it just didn't always surface the specific cross-reference someone needed without extra clicks or guesswork. The gender-swap badge exposes a cross-reference that used to require switching tabs and re-entering a converted estimate; the infant rows expose a finer-grained slice of the kids' chart that used to be missing outright.
Neither changes how the underlying conversion math works — the same US/EU/UK/cm relationships and Mondopoint-based JP sizing still apply across every tab. What's changed is how much of that math the tool now surfaces automatically instead of leaving to memory or manual lookup.