Find Your Child's Amazon Essentials Size Instantly
Use our size finder below to check Amazon Essentials sizing alongside any other brands in your child's wardrobe. Enter your child's measurements once and get results across all your saved brands — no more cross-referencing multiple size charts.
Find your child's Amazon Essentials size
Enter your child's measurements and we'll show the right size — plus how long it will last.
Size recommendations are based on official brand size charts and are provided as a guide only. Fit may vary by item, style, and individual child. Outgrow is not responsible for sizing decisions made based on these recommendations.
Amazon Essentials is one of those brands that sneaks into your shopping cart. You search for kids' leggings, filter by price, and suddenly half your child's wardrobe is Amazon Essentials. It happens to most parents eventually — and for good reason. The quality holds up, the prices are reasonable, and Prime delivery means you can reorder when something wears out.
The catch is that Amazon Essentials has no physical stores. Every single purchase is made from a product photo and a size chart. There's no trying it on, no holding it up against your child, no asking a store assistant. If you get the size wrong, you're filing a return — which with kids clothing that arrives on a Tuesday when you needed it for Thursday is exactly as annoying as it sounds.
This guide covers everything you need to get Amazon Essentials sizing right the first time. Amazon Essentials is one of the 38+ brands tracked in Outgrow's complete brand size comparison.
Why Amazon Essentials Sizing Confuses Parents
Before diving into the charts, a few things worth knowing about how Amazon Essentials labels their clothing.
The T vs. no-T question
Amazon Essentials uses T-suffix sizes (2T, 3T, 4T) for toddler garments and plain numbers (4, 5, 6) for older kids. These are genuinely different sizes — not interchangeable labels for the same item. A 4T is cut with extra room in the seat for a child still in nappies, while a size 4 is a more fitted cut for a child who has outgrown that need.
Critically, there is a gap between them. 4T covers children up to about 104cm. Size 4 starts at 107cm. A child at 105–106cm is technically between sizes — which is worth knowing before you order.
The boys/girls split happens later than you expect
Baby and toddler sizes (up to size 6/6x for girls, size 7 for boys) are essentially unisex in terms of measurements. But from size 7 onward for girls and size 8 for boys, Amazon Essentials publishes separate charts with different chest, waist, and hip measurements. If you've been buying one size across genders for younger children, note that the charts diverge at this point.
What is 6x?
Size 6x is an American sizing convention that sits between size 6 and size 7. It's not common outside the US and many parents encounter it for the first time with Amazon Essentials. It covers children at roughly 127–132cm — the same height range as boys' size 7. If your daughter is between size 6 and what you'd expect to be size 7, 6x is that step.
Baby Sizes (Shared — Boys and Girls)
Baby sizes are unisex and sized by height and weight. Amazon Essentials uses standard US baby label conventions.
| Label | Height | Weight |
|---|---|---|
| P (Preemie) | up to 43cm | up to 2.3kg |
| NB (Newborn) | up to 51cm | 2.3–3.6kg |
| 3M | 51–60cm | 3.6–5.7kg |
| 6M | 61–65cm | 5.9–7.5kg |
| 9M | 66–70cm | 7.7–9.3kg |
| 12M | 71–77cm | 9.5–10.7kg |
| 18M | 79–83cm | 10.9–12.0kg |
| 24M | 84–88cm | 12.2–13.6kg |
Little Kids Sizes (2T–7)
From 2T through to size 6/6x for girls and size 7 for boys, sizing is shared between genders and based on height and weight only. Chest measurements appear from size 7 (girls) and size 8 (boys) onward.
| Label | Height | Weight | Available For |
|---|---|---|---|
| 2T | 84–89cm | 10.9–13.2kg | Boys & Girls |
| 3T | 89–97cm | 13.2–15.0kg | Boys & Girls |
| 4T | 99–104cm | 15.0–17.0kg | Boys & Girls |
| 4 | 107–112cm | 17.0–19.1kg | Boys & Girls |
| 5 | 114–119cm | 19.1–20.9kg | Boys & Girls |
| 6 | 122–124cm | 20.9–24.0kg | Boys & Girls |
| 6x | 127–132cm | 24.0–26.3kg | Girls only |
| 7 | 127–132cm | 24.0–26.3kg | Boys only |
Mind the gap: Note the gap between 4T (up to 104cm) and size 4 (from 107cm). This is intentional — Amazon Essentials designs these as separate product lines. A child at 105–106cm may find that 4T is becoming short in the body while size 4 has too much room. Most parents in this position size up to 4 and find it evens out within a few months.
Big Girls Tops (Size 7–16)
From size 7, girls' tops include chest measurements and are sized separately from boys.
| Label | Height | Chest |
|---|---|---|
| 7 | 130–132cm | 66–69cm |
| 8 | 135–137cm | 69–72cm |
| 10 | 140–142cm | 72–75cm |
| 12 | 145–150cm | 76–79cm |
| 14 | 152–157cm | 79–81cm |
| 16 | 160–163cm | 84–86cm |
Big Boys Tops (Size 8–20)
Boys' big kid tops start from size 8 and extend further than the girls' range.
| Label | Height | Chest |
|---|---|---|
| 8 | 127–135cm | 69–71cm |
| 10 | 137–145cm | 72–76cm |
| 12 | 147–152cm | 76–79cm |
| 14 | 155–160cm | 79–81cm |
| 16 | 163–165cm | 84–86cm |
| 18 | 165–168cm | 86–89cm |
| 20 | 168–170cm | 89–91cm |
Big Kids Bottoms
Bottoms sizing for big kids uses waist and hip measurements rather than chest.
Girls Bottoms (Size 8–16)
| Label | Waist | Hips |
|---|---|---|
| 8 | 57cm | 71cm |
| 10 | 60cm | 74cm |
| 12 | 62cm | 76cm |
| 14 | 65cm | 79–81cm |
| 16 | 67cm | 84–86cm |
| 18 | 70cm | 89–91cm |
Boys Bottoms (Size 8–20)
| Label | Waist | Hips |
|---|---|---|
| 8 | 58–61cm | 71cm |
| 10 | 61–64cm | 74cm |
| 12 | 65–67cm | 76cm |
| 14 | 67–71cm | 79–81cm |
| 16 | 71–74cm | 84–86cm |
| 18 | 74–76cm | 86–89cm |
| 20 | 76–79cm | 89–91cm |
Amazon Essentials Kids Shoe Size Chart
Amazon Essentials is one of the few kids shoe brands that publishes half sizes throughout their entire range — from infant 0.5 all the way through big kid 7. This makes their sizing more precise than most, but also means the chart is longer than you might expect.
Shoes are labelled with plain US sizes for infant and toddler (0.5 through 10), and then restart with a Y suffix for big kid sizes (1Y through 7Y). This is the standard US convention for distinguishing little kid 3 from big kid 3 — if the label says “3” it's a toddler shoe, if it says “3Y” it's a bigger kids' shoe.
Infant Sizes
| US | EU | UK | Foot length |
|---|---|---|---|
| 0.5 | 16 | 0.5 | 8.3cm |
| 1 | 16 | 0.5 | 8.9cm |
| 1.5 | 17 | 1 | 9.2cm |
| 2 | 17 | 1 | 9.5cm |
| 2.5 | 18 | 1.5 | 10.2cm |
| 3 | 18 | 2 | 10.5cm |
Toddler Sizes
| US | EU | UK | Foot length |
|---|---|---|---|
| 3.5 | 19 | 2.5 | 10.8cm |
| 4 | 19 | 3 | 11.4cm |
| 4.5 | 20 | 3.5 | 11.7cm |
| 5 | 20 | 4 | 12.1cm |
| 5.5 | 21 | 4.5 | 12.7cm |
| 6 | 22 | 5.5 | 13.0cm |
| 6.5 | 22 | 5.5 | 13.3cm |
| 7 | 23 | 6 | 14.0cm |
| 7.5 | 23 | 6.5 | 14.3cm |
| 8 | 24 | 7 | 14.6cm |
| 8.5 | 25 | 7.5 | 15.2cm |
| 9 | 25 | 8 | 15.6cm |
| 9.5 | 26 | 8.5 | 15.9cm |
| 10 | 27 | 9 | 16.5cm |
Little Kid Sizes
| US | EU | UK | Foot length |
|---|---|---|---|
| 10.5 | 27 | 9.5 | 16.8cm |
| 11 | 28 | 10 | 17.1cm |
| 11.5 | 29 | 10.5 | 17.8cm |
| 12 | 30 | 11 | 18.1cm |
| 12.5 | 30 | 11.5 | 18.4cm |
| 13 | 31 | 12 | 19.1cm |
| 13.5 | 31 | 12.5 | 19.4cm |
| 1 | 32 | 13 | 19.7cm |
| 1.5 | 33 | 1 | 20.3cm |
| 2 | 33 | 1 | 20.6cm |
| 2.5 | 34 | 1.5 | 21.0cm |
| 3 | 34 | 2 | 21.6cm |
Big Kid Sizes (Y suffix)
| US | EU | UK | Foot length |
|---|---|---|---|
| 3.5Y | 35 | 2.5 | 21.9cm |
| 4Y | 36 | 3 | 22.2cm |
| 4.5Y | 36 | 3.5 | 22.9cm |
| 5Y | 37 | 4 | 23.2cm |
| 5.5Y | 37 | 4.5 | 23.5cm |
| 6Y | 38 | 5 | 24.1cm |
| 6.5Y | 38 | 5 | 24.4cm |
| 7Y | 39 | 6 | 24.8cm |
How to Measure Your Child for Amazon Essentials
Since you're buying online without the option to try anything on, getting accurate measurements is the single most important thing you can do.
- For clothing: Measure height with bare feet against a wall. For big kids' tops, measure the chest at its widest point with the measuring tape kept level. For bottoms, measure the natural waist — usually an inch or two above the hip bone — and the fullest part of the hips.
- For shoes: Have your child stand on a piece of paper and trace around their foot. Measure from the back of the heel to the tip of the longest toe. This is foot length — match it directly to the foot length column in the shoe chart above rather than converting from a size in another brand, since sizing conventions vary enough to cause a half-size error.
Tracking Amazon Essentials in OutGrow
If Amazon Essentials items are a regular part of your child's wardrobe, tracking them in OutGrow lets you see exactly when each item is approaching the end of its useful life — before you're caught short.
The size finder above covers Amazon Essentials alongside 38 other brands, so you can check sizing across your child's whole wardrobe in one place rather than hunting through individual product pages on Amazon. And because OutGrow tracks fit feedback over time, it gets better at predicting longevity for your specific child rather than relying on age-range estimates alone.
Frequently Asked Questions
Does Amazon Essentials kids clothing run true to size?
Yes — Amazon Essentials follows standard US sizing conventions. Baby sizes are height/weight-based, toddler T-sizes (2T–4T) include diaper room, and plain numbers (4, 5, 6) are for older kids. Measurements align closely with brands like Cat & Jack and Old Navy.
What is the difference between 4T and size 4?
4T is cut for toddlers still in nappies with extra seat room and covers children up to about 104cm. Size 4 starts at 107cm and has a slimmer, more fitted cut for potty-trained children. There is a deliberate gap between 104cm and 107cm.
What is size 6x?
Size 6x is an American sizing convention for girls that sits between size 6 and size 7. It covers children at roughly 127–132cm — the same height range as boys' size 7. It's available for girls only.
Are Amazon Essentials kids shoes true to size?
Amazon Essentials publishes half sizes throughout their entire shoe range from infant 0.5 through big kid 7Y, making their sizing more precise than most brands. Always measure foot length and match to the chart rather than converting from another brand.
When do sizes split between boys and girls?
Baby and toddler sizes up to 6/6x for girls and size 7 for boys are essentially unisex. From size 7 onward for girls and size 8 for boys, Amazon Essentials publishes separate charts with different chest, waist, and hip measurements.