Size 80 is a European clothing size, and the number is the child’s height in centimeters: an 80 is cut to fit a child up to about 80 cm (31.5 inches) tall. That lines up with roughly a US 12–18 month label and a UK 9–12 months, and it usually fits babies around 9 to 18 months — but always measure, because the age a size 80 fits differs from brand to brand.
- European sizes are height-based: the number is the child’s height in centimeters, so an 80 fits a child up to about 80 cm tall. Measure height, don’t guess by age.
- Size 80 is roughly a US 12–18M and a UK 9–12 months — about 9 to 18 months old and around 20–27 lb — but the age is approximate and varies by brand.
- Its neighbors: 74 fits up to 74 cm (about 6–12 months) and 86 fits up to 86 cm (about 18–24 months, or 2T).
- Height labels (EU) and age labels (US/UK) rarely line up exactly, so the same baby can be an 80 in one brand and a 74 or 86 in another. When in doubt, size up.
What does size 80 mean in baby clothes?
Size 80 means the garment is made to fit a child up to about 80 centimeters (31.5 inches) tall. Most of Europe — and many brands sold worldwide, from H&M and Zara to Scandinavian labels — size baby and toddler clothes by the child’s height in centimeters rather than by age. So the number on the tag is not a month or a year; it is a height. An 80 is one step in a ladder that runs 50, 56, 62, 68, 74, 80, 86, 92, 98, 104 and up, each about 6 cm apart. Because it is a height, the most reliable way to use it is to measure your child from heel to head and match the number, instead of guessing from their age.
What age is size 80?
Size 80 most often fits babies from about 9 to 18 months, and it is commonly labeled 12–18M in the US and 9–12 months in the UK. But age is only a rough guide: two babies of the same age can be a full size apart, so a tall nine-month-old and a petite eighteen-month-old can both land in an 80. Use height and weight to choose the size, and treat the month label as a starting point, not a rule.
Ages here are a general clothing guide, not a growth standard, and this is fit guidance rather than medical or growth advice. For questions about your child’s growth, talk to your pediatrician or see the AAP’s HealthyChildren.org. Read our full disclaimer.
What is size 80 in US and UK sizes?
In US sizing, an 80 is roughly a 12–18 month label; in the UK it is usually 9–12 months. The table below converts the whole European ladder to approximate US and UK equivalents, with the height, age and weight each size is built around. Treat the US, UK, age and weight columns as approximate — the only exact figure is the height in centimeters, which is what the European number actually means.
| EU size | Fits height up to | Approx. US size | Approx. UK age | Approx. age | Approx. weight |
|---|---|---|---|---|---|
| 50 | 50 cm (19.7 in) | Preemie / Newborn | Up to 1 month | 0–1 month | up to ~8 lb |
| 56 | 56 cm (22 in) | Newborn (NB) | 0–3 months | 0–2 months | ~7–12 lb |
| 62 | 62 cm (24.4 in) | 0–3M | 3 months | 2–4 months | ~10–14 lb |
| 68 | 68 cm (26.8 in) | 3–6M | 3–6 months | 4–6 months | ~13–18 lb |
| 74 | 74 cm (29.1 in) | 6–9M | 6–9 months | 6–9 months | ~17–22 lb |
| 80 | 80 cm (31.5 in) | 12–18M | 9–12 months | 9–18 months | ~20–27 lb |
| 86 | 86 cm (33.9 in) | 18–24M | 12–18 months | 12–24 months | ~24–30 lb |
| 92 | 92 cm (36.2 in) | 2T | 18–24 months | ~2 years | ~27–32 lb |
| 98 | 98 cm (38.6 in) | 3T | 2–3 years | ~2–3 years | ~30–35 lb |
| 104 | 104 cm (40.9 in) | 4T | 3–4 years | ~3–4 years | ~33–40 lb |
| 110 | 110 cm (43.3 in) | 5 | 4–5 years | ~4–5 years | ~37–45 lb |
One important caveat: brands do not agree on what a given label should weigh. When we compared 30 brands’ published size charts in our Baby Clothing Size Index, a single label’s stated upper weight varied by up to 6 lb from brand to brand. So use the chart as a map, then check the specific brand’s own numbers.
How do I know if size 80 will fit my baby?
The surest way is to measure, because an 80 is a height, not an age. Do three quick things:
- Measure height. Lay your baby down or stand your toddler against a wall, mark heel to the top of the head, and measure in centimeters. If they are close to 80 cm, an 80 is your size; if they are nearer 74 or 86 cm, size to that number instead.
- Check weight. An 80 is built around roughly 20–27 lb. If your baby is heavier than average for their height, size up so waistbands and snaps still close comfortably.
- Read the brand’s own chart. Because labels drift between brands (see our sizes-by-brand guide), always glance at the specific label’s centimeter and weight range before you commit.
If your baby sits between two sizes, choose the larger one. Baby clothes are worn for only a matter of weeks, so a little room to grow buys you more wear — the one exception being anything worn snug by design, where you follow the garment’s own fit guidance.
Size 74 vs 80 vs 86: which should you buy?
Pick the one whose centimeter number is closest to your child’s height: 74 fits up to 74 cm (about 6–12 months), 80 fits up to 80 cm (about 9–18 months), and 86 fits up to 86 cm (about 18–24 months, or 2T in US terms). If you are buying ahead for a gift or a coming season, jump one number up so the clothes still fit by the time they are worn. For a birthday or holiday outfit you want to fit right now, measure first, then match the height. You can compare the whole range in our sizes-by-age chart, decode footwear the same way in the baby and toddler shoe size chart, or run your child’s numbers through our size converter. Once you know the size, browse it in baby girl and baby boy clothing.
Frequently asked questions
What size is 80 in baby clothes?
Size 80 is a European clothing size made to fit a child up to about 80 cm (31.5 inches) tall — roughly a US 12–18 month label and a UK 9–12 months, usually fitting babies about 9 to 18 months old.
What age is size 80?
Size 80 most often fits babies from about 9 to 18 months, but age is only a guide because children of the same age vary in height. Measure your child and match the closest centimeter number instead of relying on age alone.
Is size 80 the same as 12 months?
Not exactly. An 80 overlaps the US 12-month range, but many brands label an 80 as 12–18M, so it often runs a little larger than a plain 12-month tag. Check the specific brand’s height and weight range to be sure.
What is size 80 in US baby clothes?
In US baby sizing, an 80 is approximately a 12–18 month label. Because US sizes go by age and European sizes go by height, the match is close but not exact, and it shifts from brand to brand.
How do I measure my baby for European sizes?
Measure your child’s height from heel to the top of the head in centimeters, then pick the European number closest to that height. For example, a child about 80 cm tall wears an 80. Re-measure every couple of months, since babies grow quickly.
Sources & method: European baby and children’s clothing is sized by body height in centimeters (the EN 13402 body-measurement labeling convention); the US and UK age equivalents, heights and weights above are typical brand-chart approximations and are directional, not exact. Per-brand weight variation is from our own Baby Clothing Size Index 2026 (30 brands’ published charts compared). Growth questions are routed to the American Academy of Pediatrics. Babbez did not handle or test any garment.
