GAP and Mango both label clothes XS–XXL, which makes them look directly comparable — but the letters sit on different systems. GAP's letters map to US numeric sizes (M is a US 8–10), while Mango's alpha sizes are its primary European sizing, converted regionally (its M is a US 6). Same alphabet, different bodies underneath.
The good news is that these two are among the easier brands to move between: both are genuinely true to size. GAP leans slightly generous with a relaxed American cut; Mango is the most true-to-size of the Spanish high-street brands, cut for a slightly taller frame with long sleeves and inseams. Below, both charts aligned by body measurement, since matching letter to letter is where the mistakes happen.
The short answer
Mango runs slightly smaller by the letter — GAP's labels cover a touch more body at every size
Compare the charts by body measurement and a consistent pattern appears: Mango's single values sit at or just below the bottom of GAP's ranges for the same letter. A Mango M charts a 92 cm bust where GAP's M covers 92.5–95.5 cm; a Mango XL charts 104 cm where GAP's XL covers 106.5–112 cm. The brands track closest at M and L, and drift furthest apart at the ends — Mango's XXL (110 cm bust) lands inside GAP's XL range, a full letter apart.
In practice both brands fit true to their own charts, so most people keep the same letter or go at most one up at Mango. The adjustments that matter are cut, not chart: Mango runs long in sleeves and inseams and snug in fitted woven dresses and jeans, while GAP's relaxed and oversized lines run big and its pant lengths are inconsistent.
GAP vs Mango at a glance
| GAP | Mango | |
|---|---|---|
| Sizing system | US numeric + alpha; M = US 8–10 | European alpha sizing, converted regionally; M = US 6 |
| Fit verdict | True to size, leaning slightly generous | True to size — the most reliable of the Spanish high-street brands |
| Cut | Classic American fit: relaxed shoulders, generous ease | Cut for a slightly taller frame; sleeves and inseams run long |
| Where to adjust | Size down in relaxed and oversized styles | Size up in fitted woven dresses and jeans |
| Grading | Letters step evenly through the range | Steps widen above S — L and XL add more room than the sizes below |
Mango sizes mapped to GAP sizes (women)
Aligned by body bust measurement, not by letter — the two brands' alpha sizes sit on different systems. Mango publishes single values; GAP publishes ranges.
| Mango size | Mango bust | Closest GAP size | GAP bust |
|---|---|---|---|
| XS | 82 cm · 32.3" | XS | 32.5–33.5" · 82.5–85 cm |
| S | 86 cm · 33.9" | XS–S | 32.5–33.5" · 82.5–85 cm / 34.5–35.5" · 87.5–90 cm |
| M | 92 cm · 36.2" | M | 36.5–37.5" · 92.5–95.5 cm |
| L | 98 cm · 38.6" | L | 39–40.5" · 99–103 cm |
| XL | 104 cm · 40.9" | L–XL | 39–40.5" · 99–103 cm / 42–44" · 106.5–112 cm |
| XXL | 110 cm · 43.3" | XL | 42–44" · 106.5–112 cm |
Women's bust and waist at the same letter
Body measurements from each brand's published chart, lined up by the letter on the label. Mango's values sit at or below the bottom of GAP's ranges throughout — the same letter is a slightly smaller body at Mango.
| Size | Mango bust | GAP bust | Mango waist | GAP waist |
|---|---|---|---|---|
| XS | 82 cm · 32.3" | 32.5–33.5" · 82.5–85 cm | 62 cm · 24.4" | 25.5" · 65 cm |
| S | 86 cm · 33.9" | 34.5–35.5" · 87.5–90 cm | 66 cm · 26" | 26.5–27.5" · 67.5–70 cm |
| M | 92 cm · 36.2" | 36.5–37.5" · 92.5–95.5 cm | 72 cm · 28.3" | 28.5–29.5" · 72.5–75 cm |
| L | 98 cm · 38.6" | 39–40.5" · 99–103 cm | 78 cm · 30.7" | 30.75–32" · 78–81.5 cm |
| XL | 104 cm · 40.9" | 42–44" · 106.5–112 cm | 85 cm · 33.5" | 33.75–35.75" · 85.5–91 cm |
| XXL | 110 cm · 43.3" | 46–47.5" · 117–120.5 cm | 92 cm · 36.2" | 37.75" · 96 cm |
Men's tops side by side
Body chest measurements. Mango Man's single values fall inside GAP's ranges from S through L — menswear letters transfer more cleanly between these two than womenswear.
| Size | Mango chest | GAP chest |
|---|---|---|
| XS | 87 cm · 34.3" | 34–36" · 86.5–91.5 cm |
| S | 95 cm · 37.4" | 36–38" · 91.5–96.5 cm |
| M | 101 cm · 39.8" | 39–41" · 99–104 cm |
| L | 107 cm · 42.1" | 42–44" · 106.5–112 cm |
| XL | 113 cm · 44.5" | 45–47" · 114.5–119.5 cm |
Switching between GAP and Mango
- Keep your GAP letter as the starting point at Mango — the brands track closest at M and L — but check the chart at the ends of the range, where a GAP XL is Mango XXL territory.
- Size up at Mango in fitted woven dresses and jeans; they run snug even though the brand is true to size overall.
- Mind the lengths: Mango cuts sleeves and inseams long, while GAP's regular inseam often runs short — check garment lengths at both rather than assuming.
- Between sizes in Mango's L or XL? Take the smaller — Mango grades generously above S, so each step up adds more room than you'd expect from GAP.
Measurements are based on each brand's published size charts and may vary by garment, fabric, and region. For the full charts and fit notes, see the GAP size guide and the Mango size guide.
GAP vs Mango sizing FAQs
Which runs bigger, GAP or Mango?
GAP, slightly. Both are true to size, but GAP's letters cover marginally bigger bodies — Mango's chart values sit at or just below the bottom of GAP's ranges for the same letter — and GAP's classic American cut carries more ease. The difference is smallest at M and L, and biggest at XXL, where Mango's chart lands inside GAP's XL range.
Is a Mango medium the same as a GAP medium?
Close but not identical. A Mango M charts a 92 cm bust and 72 cm waist; GAP's M covers 92.5–95.5 cm bust and 72.5–75 cm waist. The Mango M body is the floor of the GAP M range — most GAP M wearers fit a Mango M, but those at the top of GAP's range may prefer Mango's L.
Does Mango fit longer than GAP?
Yes. Mango cuts for a slightly taller frame, so sleeves, hems, and inseams run long — great for tall shoppers, worth checking for everyone else. GAP's lengths skew oddly in the other direction: regular often runs short while long runs very long, so check inseam options there too.
Should I size up at Mango coming from GAP?
Usually not for knitwear, outerwear, and most tops — take your usual letter. The exceptions are Mango's fitted woven dresses and jeans, which run snug enough that sizing up is the standard advice, and the very top of the range, where GAP XL/XXL bodies map a letter higher at Mango.
Do GAP and Mango men's sizes match?
Better than the women's charts do. Mango Man's chest values fall inside GAP's ranges from S through L — a Mango M at 101 cm sits within GAP M's 99–104 cm — so most men can carry their letter straight across. At XS and XL the charts drift about half a size apart.
