These are the growth charts based on breastfed babies, from birth until 2 years, issued by the WHO (World Health Organization).

The charts are a guide only. All babies are different. They all follow a different pattern, and will not necessarily stay on the same percentile that they were born on. All weights recorded are normal for the ages shown. So if your baby is right at the bottom of the chart, or right at the top, it does not mean they are too big or too small. Most babies do not follow the 50th percentile.

What Do The Percentiles Mean?

Let's take the 50th percentile. The weight on the 50th percentile, means that of all the babies that were used for the chart, 50% weighed more than this, and 50% weighed less.

For the 3rd percentile, the weight at the ages shown, 3 % weighed below that weight 97% weighed above that weight.
For the 15th percentile, 15% weighed below that weight, and 85% above that weight.
For the 85th percentile, 85% weighed below that weight, 15% weighed above that weight.
For the 97th percentile, 97% weighed below that weight, 3% weighed above that weight.

All weights are normal. There may only be concern if your baby continually has no weight gain or loses a lot of weight (apart from the first 2 weeks of your baby's life, when a degree of weight loss is normal)

There are 2 charts. One for boys and one for girls. Click on the charts to enlarge them.