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Marks & Spencer
Here’s how Marks & Spencer 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 Marks & Spencer at other brands?
Find your child’s Marks & Spencer 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.
| Marks & Spencer | Size twinssame number fits the same | Size strangerssame number, different cut |
|---|---|---|
| 2-335.4–38.6" | JoJo Maman Bébé↑ longer | |
| 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 | |
| 14-1564.6–66.9" | None — a universal size | |
| 9-1052.8–55.1" | Zara Kids↓ shorter | |
| 11-1257.5–59.8" | Zara Kids↓ shorter | |
| 13-1462.2–64.6" | Zara Kids↓ shorter | |
| 15-1666.9–69.3" | None — a universal size |
Sizes shown use Marks & Spencer’s 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 4-5, 10-11, 12-13, 14-15, 15-16, Marks & Spencer 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 Marks & Spencer 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 Marks & Spencer publishes alongside its standard sizes.
Should you buy Marks & Spencer?
Consider it if…
- Its sizing spans a wide range, so one brand can cover several years.
- You care about body fit, not just height — Marks & Spencer 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 Marks & Spencer size and their size at 100+ other brands, each from that brand’s own chart.
Find my child’s size →Shop Marks & Spencer ↗A few things parents ask that the chart won’t tell you
What measurements do I need to size Marks & Spencer accurately?
Marks & Spencer 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 Marks & Spencer boys’ and girls’ sizes fit the same?
From the bigger sizes up, Marks & Spencer publishes separate girls’ and boys’ charts, so the same number can differ by gender. The figures on this page use Marks & Spencer’s girls’/unisex chart.
Where do I buy Marks & Spencer?
Marks & Spencer is sold direct and through select retailers — it isn’t carried on third-party marketplaces like Amazon.