Baby & kids · fit tools
Measure the foot. Age is only a rough label.
Baby sizes may use month labels, but manufacturer guidance still recommends measuring. Once children move into numbered sizes, age does not predict shoe size.
Charts: Stride Rite sizing and foot-length chart · See Kai Run brand home (use its current sizing chart) · Nike Kids footwear chart.
Stride Rite baby chart examples
Brand-specific length guidance (not a universal conversion):
- US size 2 · 3–6 months · foot length 9.9 cm
- US size 3 · 6–9 months · foot length 10.8 cm
- US size 4 · 9–12 months · foot length 11.6 cm
Read the full current chart for width and later sizes. The maker says age does not reliably map to size after baby shoes.
Open printable 28 cm ruler & measuring guide
Ask for a private remeasure reminder
Measure again
Recheck periodically and whenever shoes feel tight. One manufacturer recommends measuring every two months; the reminder intervals here are the opt-in defaults from this feature brief, not a medical or growth prediction.
Frequently asked
Can age predict a child’s shoe size?
No. Use foot length and that shoe brand’s chart.
What personal details are stored?
The Today reminder contains only the optional nickname, current shoe size and reminder date. No birthday is requested.