🎒 Clothing
UK School Uniform Size Guide (by Age, Height & Chest)
Get the right school uniform size by age, height and body measurement — with per-garment guides for blazers, trousers, shirts and more. Start with the uniform size calculator.
UK uniform is labelled by age, but each garment fits off its own measurement — blazers by chest, trousers by waist, older shirts by collar. Measure your child, then size up for growing room.
By garment
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Blazers
Sized by chest in inches (a '30 chest').
Open guide →👖
Trousers
Sized by waist (+ inside leg); often adjustable.
Open guide →👔
Shirts & Blouses
By age for juniors, collar size (inches) for seniors.
Open guide →🧶
Jumpers & Sweatshirts
By chest, like blazers.
Open guide →👗
Skirts & Pinafores
By waist; pinafores also by height.
Open guide →🩳
PE Kit
By age/height; tops by chest.
Open guide →