Fundal Height to Estimated Gestational Age

Estimates gestational age from symphysis-fundal height (SFH): fundal height in centimetres approximately equals weeks of gestation ± 3 cm between 20–36 weeks. SFH <3rd percentile for gestational age or lagging by ≥4 cm suggests fetal growth restriction; SFH >3 cm above dates suggests macrosomia or polyhydramnios.

Weight
Height
Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Estimates gestational age from symphysis-fundal height (SFH): fundal height in centimetres approximately equals weeks of gestation ± 3 cm between 20–36 weeks. SFH <3rd percentile for gestational age or lagging by ≥4 cm suggests fetal growth restriction; SFH >3 cm above dates suggests macrosomia or polyhydramnios

Each component has a specific meaning:

  • Symphysis-fundal height : fundal height in centimetres approximately equals weeks of gestation ± 3 cm between 20–36 weeks — The symphysis-fundal height : fundal height in centimetres approximately equals weeks of gestation ± 3 cm between 20–36 weeks recorded for the scenario being assessed.

Note: Interpret the fundal height ega result against the thresholds and context described above.

How to Use

Enter the symphysis-fundal height : fundal height in centimetres approximately equals weeks of gestation ± 3 cm between 20–36 weeks for the scenario you are assessing. Estimates gestational age from symphysis-fundal height (SFH): fundal height in centimetres approximately equals weeks of gestation ± 3 cm between 20–36 weeks. SFH <3rd percentile for gestational age or lagging by ≥4 cm suggests fetal growth restriction; SFH >3 cm above dates suggests macrosomia or polyhydramnios. Use the fundal height ega result to inform your calculation.

Frequently Asked Questions