Primark Kids
Here’s how Primark Kids fits your child compared to other brands you might be considering, so you know before it’s in your cart.
What size is (and isn’t) like Primark Kids at other brands?
Find your child’s Primark Kids size on the left. Twins wear the same number the same way — your size carries straight over. Strangers use the same number but cut it shorter or longer, so don’t trust the label alone.
| Primark Kids | Size twinssame number fits the same | Size strangerssame number, different cut |
|---|---|---|
| Up to 1 month19.7–22.1" | — | No same-size match at other brands |
| Newborn17.3–19.7" | ||
| 0-3 months22.1–24.4" | — | No same-size match at other brands |
| 3-6 months24.4–26.8" | — | No same-size match at other brands |
| 6-9 months26.8–29.1" | — | No same-size match at other brands |
| 9-12 months29.1–31.5" | — | No same-size match at other brands |
| 12-18 months31.5–33.9" | None — a universal size | |
| 18-24 months33.9–36.2" | None — a universal size | |
| 24-36 months36.2–38.6" | — | No same-size match at other brands |
| 1.5-233.9–36.2" | — | No same-size match at other brands |
| 2-336.2–38.6" | None — a universal size | |
| 3-438.6–40.9" | Uniqlo Kids↑ longer | |
| 4-540.9–43.3" | None — a universal size | |
| 5-643.3–45.7" | Uniqlo Kids↑ longer | |
| 6-745.7–48" | JoJo Maman Bébé↑ longer | |
| 7-848–50.4" | Uniqlo Kids↑ longer | |
| 8-950.4–52.8" | Zara Kids↓ shorterJoJo Maman Bébé↑ longer | |
| 10-1155.1–57.5" | None — a universal size | |
| 12-1359.8–62.2" | None — a universal size | |
| 9-1052.8–55.1" | Zara Kids↓ shorter | |
| 11-1257.5–59.8" | Zara Kids↓ shorter |
Sizes shown use Primark Kids’ girls’/unisex chart where the brand splits by gender; boys’ sizes at the same number can run slightly taller.
In short
Where the number just works. At Up to 1 month, 0-3 months, 3-6 months, 6-9 months, 9-12 months, 12-18 months and more, Primark Kids lines up with every brand we track — the size carries straight over.
Where labels drift. The exceptions are the “strangers” above — e.g. at size 7-8, Uniqlo Kids cut the same number differently. Check those before you trust the label.
Bottom line: for most sizes, a Primark Kids number is a safe bet elsewhere — measure once, then double-check only the handful of “stranger” brands above.
Curious about a size that isn’t your child’s here? Every size, compared across every brand, lives here: Browse all size comparisons →
Specialty & inclusive fits
Which trimmer, roomier, or adaptive cuts Primark Kids publishes alongside its standard sizes.
Should you buy Primark Kids?
Consider it if…
- Its sizing spans a wide range, so one brand can cover several years.
- You care about body fit, not just height — Primark Kids publishes chest/waist so you can confirm the cut.
Think twice if…
- It isn’t sold on third-party marketplaces like Amazon — you’ll buy direct or from select retailers.
Skip the cross-referencing — let Little & Youth do it.
Enter your child’s measurements once. We’ll show their Primark Kids size and their size at 100+ other brands, each from that brand’s own chart.
Find my child’s size →Shop Primark Kids ↗A few things parents ask that the chart won’t tell you
What measurements do I need to size Primark Kids accurately?
Primark Kids publishes height, weight, chest, waist, hip in its size chart. Height is the primary driver, and the chest/waist figures let you confirm body fit for a child between sizes.
Do Primark Kids boys’ and girls’ sizes fit the same?
From the bigger sizes up, Primark Kids publishes separate girls’ and boys’ charts, so the same number can differ by gender. The figures on this page use Primark Kids’ girls’/unisex chart.
Where do I buy Primark Kids?
Primark Kids is sold direct and through select retailers — it isn’t carried on third-party marketplaces like Amazon.