Growth percentile calculator

Where is your baby on the growth chart?

Enter weight, length or head circumference to estimate your baby’s percentile using WHO growth charts, the same reference used in Plumi.

By Published Updated

Enter an age and measurement to see the percentile.

An estimate from a single measurement, not medical advice. Percentiles are most meaningful plotted over time by your pediatrician, so always go by their assessment of your baby’s growth.

About growth percentiles

What is a growth percentile?

A percentile compares a measurement with children of the same age and sex. At the 60th percentile for weight, a baby weighs more than about 60 out of 100 children in the reference group. A percentile alone does not tell you whether your baby is healthy.

Which growth charts does this use?

It uses the WHO Child Growth Standards (0–5 years), the same reference many pediatricians use for babies and the exact tables built into the Plumi app. It covers weight, length/height, and head circumference for boys and girls.

What percentile is “normal”?

There is no single right percentile. Pediatricians watch the trend over time and interpret it alongside feeding, health and other measurements. Discuss a change or any concern with your pediatrician.

Is this a diagnosis?

No. This is an estimate from a single measurement, and home scales and tape measures aren’t exact. Your pediatrician plots growth over time on a proper chart, so always rely on their assessment.

How do I follow the percentile over time?

Recording measurements over time makes changes easier to see. Plumi’s free baby growth tracker plots every measurement on WHO percentile charts on your phone, corrected age included.

More free tools

Other calculators parents use

Keep track of your baby's day

Log feeds, sleep, diapers and more for free. No account needed to start.

Three toddlers building together with wooden blocks.

Get Plumi on your iPhone

Open Camera on your iPhone and scan the code.