ALVIERO MARTINI Sizes 1 - 18 month
| Approximate age | Child's height | Child's chest (around) | Child's waist (around) |
| 1 month | 55 cm | 42 cm | 46 cm |
| 3 month | 59 cm | 43 cm | 47 cm |
| 6 month | 62 cm | 44 cm | 48 cm |
| 9 month | 68 cm | 46 cm | 48 cm |
| 12 month | 76 cm | 47 cm | 49 cm |
| 18 month | 86 cm | 50 cm | 49 cm |
ALVIERO MARTINI Sizes 2 - 6 year
| Approximate age | Child's height | Child's chest (around) | Child's waist (around) |
| 2 year | 92 cm | 52 cm | 51 cm |
| 3 year | 100 cm | 55 cm | 53 cm |
| 4 year | 106 cm | 57 cm | 55 cm |
| 5 year | 112 cm | 60 cm | 56 cm |
| 6 year | 118 cm | 60 cm | 58 cm |
ALVIERO MARTINI Sizes 8 - 14 year
| Approximate age | Child's height | Girl's chest (around) | Boy's chest (around) | Girl's waist (around) | Boy's waist (around) |
| 8 year | 130 cm | 65 cm | 68 cm | 59 cm | 61 cm |
| 10 year | 140 cm | 71 cm | 74 cm | 63 cm | 65 cm |
| 12 year | 152 cm | 77 cm | 80 cm | 67 cm | 70 cm |
| 14 year | 162 cm | 83 cm | 86 cm | 69 cm | 74 cm |
ALVIERO MARTINI BABY PRE-WALKER SHOE SIZES
| Approximate age |  EU |  UK |  USA |
| 0-3 month | 15-16 | 0-0 | 0-1 |
| 3-6 month | 17-18 | 1-2 | 2-3 |
| 6-9 month | 19-20 | 3-4 | 4-5 |
ALVIERO MARTINI JUNIOR SHOES SIZES
| EU | UK | USA | Approximate age |
| 20 | 4 | 5 | 9-12 month |
| 21 | 4.5 | 5.5 | 12-18 month |
| 22 | 5 | 6 | 18-24 month |
| 23 | 6 | 7 | 2 year |
| 24 | 7 | 8 | 2 year |
| 25 | 8 | 9 | 3 year |
| 26 | 8.5 | 9.5 | 3 year |
| 27 | 9 | 10 | 4 year |
| 28 | 10 | 11 | 5 year |
| 29 | 11 | 12 | 6 year |
| 30 | 12 | 13 | 7 year |
| 31 | 12.5 | 13.5 | 8 year |
| 32 | 13 | 1 | 8 year |
| 33 | 1 | 2 | 9 year |
| 34 | 2 | 3 | 10 year |
| 35 | 2.5 | 3.5 | 11 year |
| 36 | 3 | 4 | 12 year |
| 37 | 4 | 5 | 13 year |
| 38 | 5 | 6 | 14 year |
| 39 | 6 | 7 | 15 year |
| 40 | 7 | 8 | 16 year |