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Boys' suit size calculator

Compare his height and chest with each brand's published chart. If you only know his age, use the result as a starting point.

Find his size

Enter his height and, if you have it, his chest measurement. We match the measurements to each brand's published chart and suggest the size to try.

Standing height, no shoes (e.g. 116 cm ≈ 3′10″).

Around the fullest part, under the arms.

Used only if height is empty.

Chart dates vary by brand; each result shows its own.

    Browse links open all suits from the brand. Measurements stay in this browser tab for product fit checks; sizes and stock must be confirmed at the retailer.

    Size charts differ between brands and change without notice. We match your measurements to each brand's published chart, checked on the dates shown. Always measure before ordering and confirm the current chart at the retailer. General guides may differ from item guides: SIRRI, for example, has several chart families.

    Prefer paper? Print the full size chart: every brand on one page. Or read theboys' suit size guide for how the bands line up.

    Browse every brand chart

    Each chart is dated and sourced. Useful if you'd rather check the numbers yourself.