Printable reference. Each chart is transcribed from the brand's own guide and dated.
Boys' suit size chart, all brands
Centimetres with inches alongside; inches are approximate and rounded down, so they never claim a larger fit than the brand's own cm chart. A size fits heights up to the figure shown; if he falls between sizes, check the retailer's fit advice before choosing. Always confirm against the retailer's current chart before ordering.
Next
https://zendesk.next.co.uk/hc/en-gb/articles/28404300755857-Older-Boys-3-16-yrs-Sizing-Guide, checked 14 Nov 2026
| Size | Height to | Chest | Waist |
|---|---|---|---|
| 3 yrs | 98 cm ≈ 3′2″ | 55 cm ≈ 21″ | 53 cm ≈ 20″ |
| 4 yrs | 104 cm ≈ 3′4″ | 57 cm ≈ 22″ | 54 cm ≈ 21″ |
| 5 yrs | 110 cm ≈ 3′7″ | 59 cm ≈ 23″ | 55 cm ≈ 21″ |
| 6 yrs | 116 cm ≈ 3′9″ | 61 cm ≈ 24″ | 57 cm ≈ 22″ |
| 7 yrs | 122 cm ≈ 4′0″ | 63 cm ≈ 24″ | 58 cm ≈ 22″ |
| 8 yrs | 128 cm ≈ 4′2″ | 67 cm ≈ 26″ | 60 cm ≈ 23″ |
| 9 yrs | 134 cm ≈ 4′4″ | 70 cm ≈ 27″ | 62 cm ≈ 24″ |
| 10 yrs | 140 cm ≈ 4′7″ | 73 cm ≈ 28″ | 64 cm ≈ 25″ |
| 11 yrs | 146 cm ≈ 4′9″ | 76 cm ≈ 29″ | 66 cm ≈ 25″ |
| 12 yrs | 152 cm ≈ 4′11″ | 79 cm ≈ 31″ | 68 cm ≈ 26″ |
| 13 yrs | 158 cm ≈ 5′2″ | 82 cm ≈ 32″ | 70 cm ≈ 27″ |
| 14 yrs | 164 cm ≈ 5′4″ | 86 cm ≈ 33″ | 72 cm ≈ 28″ |
| 15 yrs | 170 cm ≈ 5′6″ | 89 cm ≈ 35″ | 74 cm ≈ 29″ |
| 16 yrs | 176 cm ≈ 5′9″ | 92 cm ≈ 36″ | 76 cm ≈ 29″ |
Marks & Spencer
Transcribed from M&S's online boys' size guide, checked 10 Nov 2026
| Size | Height to | Chest | Waist |
|---|---|---|---|
| 2–3 yrs | 98 cm ≈ 3′2″ | 54 cm ≈ 21″ | 52 cm ≈ 20″ |
| 3–4 yrs | 104 cm ≈ 3′4″ | 56 cm ≈ 22″ | 54 cm ≈ 21″ |
| 4–5 yrs | 110 cm ≈ 3′7″ | 58 cm ≈ 22″ | 55 cm ≈ 21″ |
| 5–6 yrs | 116 cm ≈ 3′9″ | 60 cm ≈ 23″ | 56 cm ≈ 22″ |
| 6–7 yrs | 122 cm ≈ 4′0″ | 63 cm ≈ 24″ | 57 cm ≈ 22″ |
| 7–8 yrs | 128 cm ≈ 4′2″ | 65 cm ≈ 25″ | 59 cm ≈ 23″ |
| 9–10 yrs | 140 cm ≈ 4′7″ | 70 cm ≈ 27″ | 62 cm ≈ 24″ |
| 11–12 yrs | 152 cm ≈ 4′11″ | 76 cm ≈ 29″ | 67 cm ≈ 26″ |
| 13–14 yrs | 164 cm ≈ 5′4″ | 82 cm ≈ 32″ | 72 cm ≈ 28″ |
| 15–16 yrs | 176 cm ≈ 5′9″ | 88 cm ≈ 34″ | 77 cm ≈ 30″ |
John Lewis
Transcribed from John Lewis's online boys' size guide, checked 10 Nov 2026
| Size | Height to | Chest | Waist |
|---|---|---|---|
| 2–3 yrs | 98 cm ≈ 3′2″ | 53 cm ≈ 20″ | 51 cm ≈ 20″ |
| 3–4 yrs | 104 cm ≈ 3′4″ | 55 cm ≈ 21″ | 53 cm ≈ 20″ |
| 5–6 yrs | 116 cm ≈ 3′9″ | 60 cm ≈ 23″ | 55 cm ≈ 21″ |
| 7–8 yrs | 128 cm ≈ 4′2″ | 64 cm ≈ 25″ | 58 cm ≈ 22″ |
| 9–10 yrs | 140 cm ≈ 4′7″ | 69 cm ≈ 27″ | 61 cm ≈ 24″ |
| 11–12 yrs | 152 cm ≈ 4′11″ | 75 cm ≈ 29″ | 66 cm ≈ 25″ |
| 13–14 yrs | 164 cm ≈ 5′4″ | 81 cm ≈ 31″ | 71 cm ≈ 27″ |
Monsoon
Transcribed from Monsoon's online boys' size guide, checked 10 Nov 2026
| Size | Height to | Chest | Waist |
|---|---|---|---|
| 12–18 mths | 86 cm ≈ 2′9″ | 51 cm ≈ 20″ | 50 cm ≈ 19″ |
| 2–3 yrs | 98 cm ≈ 3′2″ | 54 cm ≈ 21″ | 52 cm ≈ 20″ |
| 3–4 yrs | 104 cm ≈ 3′4″ | 56 cm ≈ 22″ | 54 cm ≈ 21″ |
| 5–6 yrs | 116 cm ≈ 3′9″ | 60 cm ≈ 23″ | 56 cm ≈ 22″ |
| 7–8 yrs | 128 cm ≈ 4′2″ | 65 cm ≈ 25″ | 58 cm ≈ 22″ |
| 9–10 yrs | 140 cm ≈ 4′7″ | 70 cm ≈ 27″ | 62 cm ≈ 24″ |
| 11–12 yrs | 152 cm ≈ 4′11″ | 76 cm ≈ 29″ | 67 cm ≈ 26″ |
| 13–14 yrs | 164 cm ≈ 5′4″ | 82 cm ≈ 32″ | 72 cm ≈ 28″ |
SIRRI
Transcribed from SIRRI's online page-boy size guide, checked 10 Nov 2026
| Size | Height to | Chest | Waist |
|---|---|---|---|
| 6–12 mths | 80 cm ≈ 2′7″ | 50 cm ≈ 19″ | 49 cm ≈ 19″ |
| 12–18 mths | 86 cm ≈ 2′9″ | 51 cm ≈ 20″ | 50 cm ≈ 19″ |
| 18–24 mths | 92 cm ≈ 3′0″ | 52 cm ≈ 20″ | 51 cm ≈ 20″ |
| 2–3 yrs | 98 cm ≈ 3′2″ | 54 cm ≈ 21″ | 52 cm ≈ 20″ |
| 3–4 yrs | 104 cm ≈ 3′4″ | 56 cm ≈ 22″ | 54 cm ≈ 21″ |
| 5–6 yrs | 116 cm ≈ 3′9″ | 60 cm ≈ 23″ | 56 cm ≈ 22″ |
| 7–8 yrs | 128 cm ≈ 4′2″ | 65 cm ≈ 25″ | 58 cm ≈ 22″ |
| 9–10 yrs | 140 cm ≈ 4′7″ | 70 cm ≈ 27″ | 62 cm ≈ 24″ |
| 11–12 yrs | 152 cm ≈ 4′11″ | 76 cm ≈ 29″ | 67 cm ≈ 26″ |
Marc Darcy
Transcribed from Marc Darcy's online boys' size guide, checked 10 Nov 2026
| Size | Height to | Chest | Waist |
|---|---|---|---|
| 2–3 yrs | 98 cm ≈ 3′2″ | 54 cm ≈ 21″ | 52 cm ≈ 20″ |
| 3–4 yrs | 104 cm ≈ 3′4″ | 56 cm ≈ 22″ | 54 cm ≈ 21″ |
| 5–6 yrs | 116 cm ≈ 3′9″ | 61 cm ≈ 24″ | 56 cm ≈ 22″ |
| 7–8 yrs | 128 cm ≈ 4′2″ | 66 cm ≈ 25″ | 59 cm ≈ 23″ |
| 9–10 yrs | 140 cm ≈ 4′7″ | 72 cm ≈ 28″ | 63 cm ≈ 24″ |
| 11–12 yrs | 152 cm ≈ 4′11″ | 78 cm ≈ 30″ | 68 cm ≈ 26″ |
| 13–14 yrs | 164 cm ≈ 5′4″ | 84 cm ≈ 33″ | 73 cm ≈ 28″ |
H&M
Transcribed from H&M's online boys' size guide, checked 10 Nov 2026
| Size | Height to | Chest | Waist |
|---|---|---|---|
| 1–2 yrs | 92 cm ≈ 3′0″ | 52 cm ≈ 20″ | 51 cm ≈ 20″ |
| 2–4 yrs | 104 cm ≈ 3′4″ | 56 cm ≈ 22″ | 54 cm ≈ 21″ |
| 4–6 yrs | 116 cm ≈ 3′9″ | 60 cm ≈ 23″ | 56 cm ≈ 22″ |
| 6–8 yrs | 128 cm ≈ 4′2″ | 65 cm ≈ 25″ | 58 cm ≈ 22″ |
| 8–10 yrs | 140 cm ≈ 4′7″ | 70 cm ≈ 27″ | 62 cm ≈ 24″ |
| 10–12 yrs | 152 cm ≈ 4′11″ | 76 cm ≈ 29″ | 67 cm ≈ 26″ |
| 12–14 yrs | 164 cm ≈ 5′4″ | 82 cm ≈ 32″ | 72 cm ≈ 28″ |
| 14–16 yrs | 176 cm ≈ 5′9″ | 88 cm ≈ 34″ | 77 cm ≈ 30″ |
River Island
Transcribed from River Island's online boys' size guide, checked 10 Nov 2026
| Size | Height to | Chest | Waist |
|---|---|---|---|
| 3–4 yrs | 104 cm ≈ 3′4″ | 55 cm ≈ 21″ | 54 cm ≈ 21″ |
| 5–6 yrs | 116 cm ≈ 3′9″ | 60 cm ≈ 23″ | 56 cm ≈ 22″ |
| 7–8 yrs | 128 cm ≈ 4′2″ | 65 cm ≈ 25″ | 58 cm ≈ 22″ |
| 9–10 yrs | 140 cm ≈ 4′7″ | 70 cm ≈ 27″ | 62 cm ≈ 24″ |
| 11–12 yrs | 152 cm ≈ 4′11″ | 76 cm ≈ 29″ | 67 cm ≈ 26″ |
| 13–14 yrs | 164 cm ≈ 5′4″ | 82 cm ≈ 32″ | 72 cm ≈ 28″ |
Roco
Transcribed from the sizing guide on Roco Clothing's Roco product pages, checked 14 Nov 2026
| Size | Height to | Chest | Waist |
|---|---|---|---|
| 12–18 mths | 76 cm ≈ 2′5″ | 57 cm ≈ 22″ | 42 cm ≈ 16″ |
| 1 (1–2 yrs) | 76 cm ≈ 2′5″ | 57 cm ≈ 22″ | 42 cm ≈ 16″ |
| 18–24 mths | 82 cm ≈ 2′8″ | 58 cm ≈ 22″ | 43 cm ≈ 16″ |
| 2 (2–3 yrs) | 88 cm ≈ 2′10″ | 58 cm ≈ 22″ | 45 cm ≈ 17″ |
| 3 (3–4 yrs) | 96 cm ≈ 3′1″ | 61 cm ≈ 24″ | 49 cm ≈ 19″ |
| 4 (4–5 yrs) | 103 cm ≈ 3′4″ | 62 cm ≈ 24″ | 51 cm ≈ 20″ |
| 5 (5–6 yrs) | 110 cm ≈ 3′7″ | 65 cm ≈ 25″ | 53 cm ≈ 20″ |
| 6 (6–7 yrs) | 116 cm ≈ 3′9″ | 67 cm ≈ 26″ | 53 cm ≈ 20″ |
| 7 (7–8 yrs) | 122 cm ≈ 4′0″ | 69 cm ≈ 27″ | 54 cm ≈ 21″ |
| 8 (8–9 yrs) | 128 cm ≈ 4′2″ | 71 cm ≈ 27″ | 55 cm ≈ 21″ |
| 9 (9–10 yrs) | 134 cm ≈ 4′4″ | 74 cm ≈ 29″ | 56 cm ≈ 22″ |
| 10 (10–11 yrs) | 140 cm ≈ 4′7″ | 77 cm ≈ 30″ | 58 cm ≈ 22″ |
| 11 (11–12 yrs) | 146 cm ≈ 4′9″ | 79 cm ≈ 31″ | 58 cm ≈ 22″ |
| 12 (12–13 yrs) | 152 cm ≈ 4′11″ | 82 cm ≈ 32″ | 60 cm ≈ 23″ |
| 13 (13–14 yrs) | 158 cm ≈ 5′2″ | 87 cm ≈ 34″ | 60 cm ≈ 23″ |
| 14 (14–15 yrs) | 165 cm ≈ 5′4″ | 92 cm ≈ 36″ | 61 cm ≈ 24″ |
| 15 (15–16 yrs) | 170 cm ≈ 5′6″ | 94 cm ≈ 37″ | 64 cm ≈ 25″ |
| 16 yrs | 174 cm ≈ 5′8″ | 97 cm ≈ 38″ | 67 cm ≈ 26″ |
Paisley of London
Transcribed from the sizing guide shown on Paisley of London product pages at Roco Clothing, checked 14 Nov 2026
| Size | Height to | Chest | Waist |
|---|---|---|---|
| 12–18 mths | 76 cm ≈ 2′5″ | 57 cm ≈ 22″ | 42 cm ≈ 16″ |
| 1 (1–2 yrs) | 76 cm ≈ 2′5″ | 57 cm ≈ 22″ | 42 cm ≈ 16″ |
| 18–24 mths | 82 cm ≈ 2′8″ | 58 cm ≈ 22″ | 43 cm ≈ 16″ |
| 2 (2–3 yrs) | 88 cm ≈ 2′10″ | 58 cm ≈ 22″ | 45 cm ≈ 17″ |
| 3 (3–4 yrs) | 96 cm ≈ 3′1″ | 61 cm ≈ 24″ | 49 cm ≈ 19″ |
| 4 (4–5 yrs) | 103 cm ≈ 3′4″ | 62 cm ≈ 24″ | 51 cm ≈ 20″ |
| 5 (5–6 yrs) | 110 cm ≈ 3′7″ | 65 cm ≈ 25″ | 53 cm ≈ 20″ |
| 6 (6–7 yrs) | 116 cm ≈ 3′9″ | 67 cm ≈ 26″ | 53 cm ≈ 20″ |
| 7 (7–8 yrs) | 122 cm ≈ 4′0″ | 69 cm ≈ 27″ | 54 cm ≈ 21″ |
| 8 (8–9 yrs) | 128 cm ≈ 4′2″ | 71 cm ≈ 27″ | 55 cm ≈ 21″ |
| 9 (9–10 yrs) | 134 cm ≈ 4′4″ | 74 cm ≈ 29″ | 56 cm ≈ 22″ |
| 10 (10–11 yrs) | 140 cm ≈ 4′7″ | 77 cm ≈ 30″ | 58 cm ≈ 22″ |
| 11 (11–12 yrs) | 146 cm ≈ 4′9″ | 79 cm ≈ 31″ | 58 cm ≈ 22″ |
| 12 (12–13 yrs) | 152 cm ≈ 4′11″ | 82 cm ≈ 32″ | 60 cm ≈ 23″ |
| 13 (13–14 yrs) | 158 cm ≈ 5′2″ | 87 cm ≈ 34″ | 60 cm ≈ 23″ |
| 14 (14–15 yrs) | 165 cm ≈ 5′4″ | 92 cm ≈ 36″ | 61 cm ≈ 24″ |
| 15 (15–16 yrs) | 170 cm ≈ 5′6″ | 94 cm ≈ 37″ | 64 cm ≈ 25″ |
| 16 yrs | 174 cm ≈ 5′8″ | 97 cm ≈ 38″ | 67 cm ≈ 26″ |
Charts differ between brands and change without notice. Data compiled by BoysSuit.com; always confirm at the retailer. boyssuit.com