As kids grow, choosing the right clothing and shoe size becomes increasingly important for comfort, performance, and confidence. Nike offers a wide range of footwear and apparel for big kids, but understanding the sizing can sometimes be confusing, especially when transitioning from little kids’ to youth or adult sizes.
This guide includes Nike Big Kids shoe and clothing size charts, explains how to measure your child correctly, and provides practical tips for selecting the best fit.
Nike Big Kids’ Shoe Size Chart for Boys and Girls
| US – Kids | 1C | 2C | 3C | 4C | 5C | 6C | 7C | 8C | 9C | 10C | 10.5C | 11C | 11.5C | 12C | 12.5C | 13C | 13.5C | 1Y | 1.5Y | 2Y |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| US – Boy’s | 0.5 | 1 | 1.5 | 2 | ||||||||||||||||
| US – Girls | 0.5 | 1 | 1.5 | 2 | 2.5 | 3 | 3.5 | |||||||||||||
| UK | 0.5 | 1.5 | 2.5 | 3.5 | 4.5 | 5.5 | 6.5 | 7.5 | 8.5 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 12.5 | 13 | 13.5 | 1 | 1.5 |
| CM | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 16.5 | 17 | 17.5 | 18 | 18.5 | 19 | 19.5 | 20 | 20.5 | 21 |
| EU | 16 | 17 | 18.5 | 19.5 | 21 | 22 | 23.5 | 25 | 26 | 27 | 27.5 | 28 | 28.5 | 29.5 | 30 | 31 | 31.5 | 32 | 33 | 33.5 |
Nike Big Kids’ Unisex Clothing
Boys
| Size | XS | S | S+ | M | M+ | L | L+ | XL | XL+ |
|---|---|---|---|---|---|---|---|---|---|
| Numeric Size | 6 – 7 | 8 – 9 | 8 – 9 Plus | 10 – 12 | 10 – 12 Plus | 14 – 16 | 14 – 16 Plus | 18 – 20 | 18 – 20 Plus |
| Age | 7 – 8 | 8 -10 | 8 -10 | 10 – 12 | 10 – 12 | 12 – 13 | 12 – 13 | 13 – 15 | 13 – 15 |
| Height (in) | 48 – 50 | 50 – 54 | 50 – 54 | 54 – 58 | 54 – 58 | 58 – 62 | 58 – 62 | 62 – 67 | 62 – 67 |
| Chest (in) | 25.5 – 26 | 26 – 27 | 28 – 30 | 27 – 29.5 | 30 – 33 | 29.5 – 32 | 33 – 36 | 32 – 35 | 36 – 38.5 |
| Waist (in) | 23.5 – 24 | 24 – 25.5 | 26 – 28 | 25.5 – 27 | 28 – 30 | 27 – 28.5 | 30 – 32 | 28.5 – 29.5 | 32 – 34.5 |
| Hip (in) | 27 – 28 | 28 – 29.5 | 30 – 32 | 29.5 – 31.5 | 32 – 34 | 31.5 – 33.5 | 34 – 37 | 33.5 – 35 | 37 – 39.5 |
Girls
| Size | XS | S | S+ | M | M+ | L | L+ | XL | XL+ |
|---|---|---|---|---|---|---|---|---|---|
| Numeric Size | 6 – 7 | 8 – 9 | 8 – 9 Plus | 10 – 12 | 10 – 12 Plus | 14 – 16 | 14 – 16 Plus | 18 – 20 | 18 – 20 Plus |
| Age | 7 – 8 | 8 – 10 | 8 – 10 | 10 – 12 | 10 – 12 | 12 – 13 | 12 – 13 | 13 – 15 | 13 – 15 |
| Height (in) | 48 – 50 | 50 – 54 | 50 – 54 | 54 – 57 | 54 – 57.5 | 57 – 61 | 57.5 – 61.5 | 61 – 65 | 61.5 – 65.5 |
| Chest (in) | 25.5 – 27 | 27 – 29 | 29 – 32 | 29 – 31 | 32 – 34.5 | 31 – 33.5 | 34.5 – 38 | 33.5 – 36.5 | 38 – 41.5 |
| Waist (in) | 23.5 – 24 | 24 – 25 | 26.5 – 29.5 | 25 – 27 | 29.5 – 32 | 27 – 28 | 32 – 35 | 28 – 29.5 | 35 – 39 |
| Hip (in) | 27 – 29 | 29 – 31 | 31 – 33.5 | 31 – 33 | 33.5 – 36 | 33 – 35 | 36 – 39 | 35 – 37 | 39 – 42 |
Nike Kids’ Apparel Size Chart
Boy’s Apparel
| ALPHA SIZE | XS | S | M | L | XL |
| AGE | 6-7 | 8-9 | 10-11 | 12-13 | 14+ |
| NUMERIC SIZE | 6-7 | 8-9 | 10-12 | 14-16 | 18-20 |
| CHEST (cm.) | 64.5–66 | 66–69 | 69–75 | 75–81.5 | 81.5–88.5 |
| WAIST (cm.) | 59.5–61.5 | 61.5–65 | 65–69 | 69–72.5 | 72.5–75.5 |
| HIPS (cm.) | 68.5–71 | 71–74.5 | 74.5–79.5 | 79.5–84.5 | 84.5–89.5 |
| HEIGHT (cm.) | 122–128 | 128–137 | 137-147 | 147-158 | 158-170 |
| CHEST (in.) | 25.5-26 | 26-27 | 27-29.5 | 29.5-32 | 32-35 |
| WAIST (in.) | 23.5-24 | 24-25.5 | 25.5-27 | 27-28.5 | 28.5-29.5 |
| HIPS (in.) | 27-28 | 28-29.5 | 29.5-31.5 | 31.5-33.5 | 33.5-35 |
| HEIGHT (in.) | 47-51 | 51-55 | 55-59 | 59-63 | 63-67 |
Girl’s Apparel
| ALPHA SIZE | XS | S | M | L | XL |
| AGE | 6-7 | 8-9 | 10-11 | 12-13 | 14+ |
| NUMERIC SIZE | 6-7 | 8-9 | 10-12 | 14-16 | 18-20 |
| CHEST (cm.) | 64.5–66 | 66–69 | 69–75 | 75–85.5 | 85.5-92.5 |
| WAIST (cm.) | 59.5–61 | 61-64 | 64-68 | 68-71.5 | 71.5-74.5 |
| HIPS (cm.) | 68.5–73 | 73–78.5 | 78.5–83.5 | 83.5-88.5 | 88.5-93.5 |
| HEIGHT (cm.) | 122–128 | 128–137 | 137-146 | 146-156 | 156-166 |
| CHEST (in.) | 25.5-27 | 27-29 | 29-31 | 31-33.5 | 33.5-36.5 |
| WAIST (in.) | 23.5-24 | 24-25 | 25-27 | 27-28 | 28-29.5 |
| HIPS (in.) | 27-29 | 29-31 | 31-33 | 33-35 | 35-37 |
| HEIGHT (in.) | 47-51 | 51-55 | 55-59 | 59-63 | 63-67 |
Why Nike Size Charts Matter
Children grow quickly, and sizing can vary between brands. Using Nike’s official size chart helps you choose clothing and footwear that fits properly, allowing better comfort during sports, school, and everyday activities.
Instead of relying only on your child’s age, compare their body measurements with the size chart for a more accurate fit.
How to Measure Your Child
Taking accurate measurements before shopping can help reduce the chances of ordering the wrong size.
Measure Foot Length
Place your child’s heel against a wall on a flat surface. Measure from the back of the heel to the tip of the longest toe. Measure both feet and use the longer measurement when selecting a shoe size.
Measure Height
Have your child stand straight against a wall without shoes and measure from the floor to the top of the head.
Measure Chest
Wrap a measuring tape around the fullest part of the chest while keeping the tape level.
Measure Waist
Measure around the natural waistline without pulling the tape too tightly.
Measure Hips
Measure around the widest part of the hips while standing naturally.
Nike Big Kids Shoe Size Conversion
As children grow into youth sizes, many parents wonder when to transition to adult shoes.
Generally:
- Youth size 6Y is close to Women’s US 7.5
- Youth size 7Y is close to Women’s US 8.5
Always compare foot measurements with Nike’s size chart, as conversions may vary slightly by style.
Tips for Choosing the Right Nike Size
Before placing an order, keep these recommendations in mind:
- Measure both feet because one foot may be slightly larger.
- Leave about a thumb’s width of space at the toe for growing feet.
- Measure your child every few months since children’s feet grow quickly.
- Read customer reviews to see whether a particular model runs small or large.
- Try shoes on later in the day when feet are naturally at their largest.
Common Nike Sizing Mistakes
Avoid these common errors when shopping:
- Choosing a size based only on age.
- Forgetting to measure both feet.
- Buying shoes with no room for growth.
- Ignoring width and overall fit.
- Assuming every Nike shoe fits the same.
How Should Nike Shoes Fit?
A properly fitting Nike shoe should:
- Hold the heel securely without slipping.
- Leave a small amount of space in front of the toes.
- Feel comfortable across the widest part of the foot.
- Allow natural movement during walking and running.
Shoes that are too tight can cause discomfort, while oversized shoes may affect stability during sports.
Caring for Nike Shoes and Apparel
To help Nike products last longer:
- Clean shoes with a soft brush and mild soap.
- Avoid machine washing unless recommended on the care label.
- Air dry naturally.
- Wash clothing in cold water.
- Follow the care instructions on each garment.
Conclusion
Choosing the right Nike Big Kids size is easier when you rely on accurate body and foot measurements rather than age alone. Using the official size chart can help you find comfortable shoes and clothing that support your child’s active lifestyle. Since every child grows at a different pace, it’s a good idea to remeasure regularly and review the size chart before each purchase.
FAQs
What age does Nike Big Kids sizing cover?
Nike Big Kids sizing generally fits children between 8 and 15 years old, although the best size depends on your child’s measurements rather than age alone.
Do Nike Big Kids shoes run true to size?
Most Nike Big Kids shoes fit true to size, but some performance models may have a narrower fit. Checking customer reviews can provide additional guidance.
How do I measure my child’s feet for Nike shoes?
Measure from the heel to the longest toe while your child is standing. Compare the measurement with Nike’s shoe size chart.
Should I buy a larger size for growing feet?
A small amount of extra room is recommended, but shoes should not be excessively large, as this can affect comfort and stability.
When should kids switch to adult Nike sizes?
Many children begin wearing adult sizes around Youth 6Y or 7Y, depending on their foot length.
Can boys and girls use the same Nike shoe sizes?
Yes. Nike youth shoe sizes are generally unisex, although some styles and colorways may differ.
How often should I measure my child’s feet?
Children’s feet grow quickly, so measuring every three to six months is recommended.
What if my child’s measurements fall between two sizes?
If your child’s measurements are between sizes, choosing the larger size usually provides a more comfortable fit and allows room for growth.
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