How to Read Your Baby's Growth Chart

Log each measurement in the Stats tab: tap + Measure and enter weight in kg, length in cm, and head circumference in cm. The date defaults to today but you can edit it to log past measurements.

The growth chart plots weight over time with a smooth curve. The direction of the curve matters more than the exact number - a consistent upward trend is healthy regardless of which percentile line it sits on.

Percentile lines (2nd, 9th, 25th, 50th, 75th, 91st, 98th) show where your baby sits relative to other babies of the same age and sex. Any percentile is normal - it is not a score or a ranking.

Discuss your tracker data with your health visitor if growth drops across two or more centile lines downwards, or if the curve flattens for several weeks. Your logged data makes these conversations much more productive than estimated recall.