Children's Shoe Size Calculator by Age
Estimate a child's shoe size from their age or, more accurately, their measured foot length — with US, UK and EU sizes and a reminder of how often to check.
Children's feet grow fast and sizing is best done by measured foot length, because growth varies a lot between children. Use age only as a rough starting point. For the most reliable result, measure the longest toe to heel in centimetres and enter it below.
Your child's estimated size will appear here.
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Medical disclaimer: This article is for general education only and is not medical advice. It does not replace diagnosis or treatment from a licensed podiatrist or physician. If you have diabetes, an infection, severe pain, numbness, or a wound that will not heal, seek professional care promptly.
Frequently asked questions
- How often should I measure my child's feet?
- Toddlers and young children may need a re-check every 6 to 8 weeks; school-age children roughly every 3 months. Re-measure sooner if shoes seem tight.
- How much growing room should kids' shoes have?
- About a thumb's width (roughly 1 to 1.5 cm) between the longest toe and the shoe end — enough to grow into without being so loose they trip.
- Is age a reliable way to size children's shoes?
- No. Age gives only a rough range. Two children of the same age can differ by several sizes, so measured length is far more accurate.
About this tool
This estimator maps foot length to standard child shoe sizes, or gives a typical range from age when no measurement is available. It runs in your browser. Always confirm fit in the shop with both shoes on and the child standing, and allow growing room.