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Fetal Growth Chart

A free online tool for plotting fetal biometry (BPD, HC, AC, FL) and estimated fetal weight against the WHO fetal growth reference centiles, for singleton and twin pregnancies, with a printable A4 report.

Open the Growth ChartHow to use it

Why use an online fetal growth chart?

Plotting fetal growth by hand on a paper chart is slow, especially when a pregnancy has several scans and each parameter needs its own graph. Points are easy to misplace by a few days or millimetres, and the chart is often not available when the next clinician sees the patient. This tool puts measurement entry, serial plotting and a printable report in one place, so the growth trend can be seen at a glance and filed in the antenatal record.

What can you plot?

Singleton & twin pregnanciesSeparate workflows. Twin A and Twin B are plotted on their own charts, with chorionicity, side, order and presentation recorded.
Five biometric parametersBPD, HC, AC, FL and EFW, up to five serial measurements per pregnancy.
Centile band for every valueEach value in the history table is labelled with its WHO centile band (for example 5–25th), so you do not have to read it off the graph.
Liquor and DopplerAFI for singletons, DVP for each twin, umbilical artery Doppler (status, PI, RI, S/D), fetal heart and placenta.
Twin EFW discordanceCalculated automatically from the Twin A and Twin B EFW at each visit.
Printable A4 reportAll five charts, the measurement history and blank fields for the patient's details, ready to be filed.

Built on the WHO fetal growth reference

The centile curves come from the WHO Fetal Growth Charts study (Kiserud et al., PLOS Medicine 2017). In that study, 1,387 women with low-risk pregnancies in ten countries (Argentina, Brazil, DR Congo, Denmark, Egypt, France, Germany, India, Norway and Thailand) had scheduled ultrasound scans at about 14, 18, 24, 28, 32, 36 and 40 weeks. The tool reproduces the published WHO centile tables: we checked every parameter at 14, 20, 28, 36 and 40 weeks, and the results match the published values after rounding. Read more in About the WHO fetal growth charts.

Who is it for?

The tool is written for healthcare professionals involved in antenatal care and obstetric ultrasound: O&G specialists, medical officers, general practitioners, sonographers, midwives and staff of primary care clinics such as Klinik Kesihatan (KK). It is a plotting and documentation aid. It does not make a diagnosis.

Privacy by design

You do not enter the patient's name or identification number on this website. Measurements are kept only in your open browser tab and disappear when the tab is closed. The printed report has blank boxes for the patient's details, to be completed by hand. See the Privacy Statement.

Learn more

How to read a fetal growth chartCentiles, serial plotting, crossing centiles and common pitfalls. Fetal biometry explainedWhat BPD, HC, AC and FL measure, and how they are taken. Estimated fetal weight (EFW)The Hadlock formula, its accuracy and its limitations. Twin growth assessmentChorionicity, EFW discordance and why each twin is plotted separately. About the WHO fetal growth chartsHow the WHO study was designed and what its centiles represent. Frequently asked questionsCommon questions on using the tool and interpreting the charts.

Independent implementation. Fetal Growth Chart is not an official WHO application. It is a clinical-support and educational tool. Clinical interpretation remains the responsibility of the treating clinician. See the Disclaimer.