Ballard Gestational Age from Exam

Estimate gestational age from neuromuscular and physical maturity criteria using the New Ballard Score. Applicable from 20 to 44 weeks when last menstrual period is unknown.

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

Estimate gestational age from neuromuscular and physical maturity criteria using the New Ballard Score. Applicable from 20 to 44 weeks when last menstrual period is unknown

Each component has a specific meaning:

  • Neuromuscular — The neuromuscular recorded for the scenario being assessed.
  • Physical maturity criteria — The physical maturity criteria recorded for the scenario being assessed.

Note: Interpret the ballard score result against the thresholds and context described above.

How to Use

Enter the neuromuscular, physical maturity criteria for the scenario you are assessing. Estimate gestational age from neuromuscular and physical maturity criteria using the New Ballard Score. Applicable from 20 to 44 weeks when last menstrual period is unknown. Use the ballard score result to inform your calculation.

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Frequently Asked Questions