Sleepwear

Baby Sleepsuit Size Chart

This Baby Sleepsuit size chart covers 5 sizes (0–3M – 18–24M) across 3 measurements: total length, chest width and sleeve length. Values are in inches, and you can switch the table to centimetres.

Size chart

AgeTotal Length (in)Chest Width (in)Sleeve Length (in)
0–3M2185.5
3–6M238.56.5
6–12M2697.5
12–18M299.58.5
18–24M32109.5
Fit tip

Baby sizes are a guide by age; weight and height are more reliable, so size up if your baby is above average.

How to measure

Baby Sleepsuit Size Chart: how to measure, with labelled measurement points
  1. A
    Total Length

    Lay the item flat and measure the full length from the highest point to the lowest edge.

  2. B
    Chest Width

    Lay the garment flat and measure straight across from one armpit seam to the other.

  3. C
    Sleeve Length

    Measure from the shoulder seam along the top of the sleeve to the end of the cuff.

About these measurements: they're typical values for this kind of product, meant as a starting point. Every brand's fit is different, so adjust them to match your own garments before publishing.

All size charts →