About KidsSizes

KidsSizes answers one question: “my child is this old, so what size is everything?” for UK parents and grandparents.

How we source sizes

• Only published charts. Every figure is copied from a named UK retailer, manufacturer, charity or NHS page, linked at the bottom of the page it appears on, with the date we checked it.
• Ranges, not promises. Brands disagree, so where two sources differ we show both instead of averaging them into a number nobody publishes.
• Worked comparisons are labelled. On the teen-to-adult page we compare two charts' measurements and say so.
• Safety guidance is quoted, not rewritten. Sleep and bedding advice for babies and toddlers comes from the NHS and The Lullaby Trust. Manufacturer charts (like sleeping bag tog guides) are labelled as the maker's own.
• No medical advice. If you're worried about your child's growth, talk to your health visitor or GP.

Last full check: 18 October 2026. Spotted a chart that has changed? Email contact@kidssizes.co.uk.

Advertising and affiliate links

The site has no adverts and no affiliate links at the moment. If that changes, any page with affiliate links will say “This page contains affiliate links.” at the top.