Baby Shoe Size Calculator
Choosing the right shoe size for your baby is tricky: feet grow fast and every brand fits differently. This calculator uses your baby's foot measurement in cm or age in months to find the approximate size in Argentine, European, and US systems.
When to use this calculator
- You're buying baby shoes and aren't sure of the size.
- You want to buy a gift but don't know the exact foot measurement.
- Your baby is taking first steps and needs their first pair of shoes.
- You need to convert between Argentine, European, and US shoe sizes.
- You want to know how often to replace your baby's shoes.
Example: 12 cm foot (baby ~12 months old)
- Foot measurement: 12 cm.
- Argentine size: 19.
- EU size: 19.
- US size: 4.
How it works
1 min readBaby Shoe Size Chart
| Foot (cm) | Age (approx) | AR/EU | US |
|---|---|---|---|
| 8-8.5 | 0-3 months | 15 | 0.5 |
| 9 | 3-6 months | 16 | 1 |
| 9.5 | 3-6 months | 16 | 1.5 |
| 10 | 6-9 months | 17 | 2 |
| 10.5 | 6-9 months | 17 | 2.5 |
| 11 | 9-12 months | 18 | 3 |
| 11.5 | 9-12 months | 18 | 3.5 |
| 12 | 12-15 months | 19 | 4 |
| 12.5 | 12-15 months | 20 | 4.5 |
| 13 | 15-18 months | 21 | 5 |
| 13.5 | 18-21 months | 21 | 5.5 |
| 14 | 21-24 months | 22 | 6 |
| 14.5 | 24 months | 23 | 6.5 |
| 15 | 2-3 years | 24 | 7 |
| 16 | 3-4 years | 25 | 8 |
| 17 | 4-5 years | 27 | 9 |
How to Measure Your Baby's Foot
1. Have your baby stand on a piece of paper.
2. Mark the heel and the longest toe.
3. Measure the distance in cm.
4. Add 1 cm for the shoe.
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Frequently asked questions
When do babies need their first shoes?
Babies don't need shoes until they start walking (usually 9-15 months old). Before that, socks or booties are fine. For walking around the house, going barefoot is actually best for healthy foot development.
How do I measure my baby's foot correctly?
Place your baby standing on a piece of paper, mark the heel and longest toe, then measure the distance in centimeters. Add 1 cm for proper shoe fit. If your baby won't cooperate, try measuring while they're asleep or in a high chair.
How tight should baby shoes fit?
There should be 1-1.5 cm of space between the big toe and the shoe tip (about the width of your thumb). The shoe shouldn't be too snug at the sides, and your baby shouldn't be able to kick it off easily.
How often do babies outgrow their shoe size?
Baby feet grow fast: about 1 cm every 3-4 months in the first year, then 1 cm every 4-6 months after that. Check the size every 2-3 months by pressing your finger on the shoe's tip.
Are Argentine and European baby shoe sizes the same?
For children, Argentine and European sizes are nearly identical. The biggest difference is with US sizes, which use a different sizing system—typically 2-3 sizes smaller than Argentine/EU.
Can I use hand-me-down baby shoes?
Only if they're in good condition. Check that the sole isn't unevenly worn, which can affect your baby's gait. If they're the right size and show minimal wear, hand-me-downs are fine.
Are soft or rigid baby shoes better?
For early walkers, soft, flexible shoes are best—they let the foot move naturally and build strength. Save the stiffer shoes for when your toddler is a confident walker.
Do babies actually need shoes to learn to walk?
No. In fact, barefoot walking helps babies develop better balance, coordination, and foot strength. Shoes are mainly for protection outdoors or in cold weather—they're not required for learning to walk.
What's the difference between baby and toddler shoe sizes?
Baby sizes typically go from newborn to 24 months, while toddler sizes start around 2 years. The main difference is that toddler shoes are slightly wider and have more arch support as feet develop.