INTERGROWTH-21st Newborn Growth Charts
Prepare your data to view the chart
This chart needs age, sex, and growth measurements. Use the calculator to enter the data and open a personalized chart.
Open growth calculatorAbout INTERGROWTH-21st Newborn Growth Charts
INTERGROWTH-21st charts support newborn growth assessment at birth. They review weight, length, and head circumference against international newborn standards.
Required Inputs
- Gestational age or applicable range.
- Newborn sex.
- Birth weight, length, or head circumference.
- Relevant perinatal context.
References and Limits
INTERGROWTH-21st should be applied within its ranges and definitions. Review prematurity, growth restriction, obstetric data, and birth measurement quality.
Extreme or discordant findings require neonatal clinical correlation and follow-up. Do not use the chart as the only basis for decisions.
Interpret results as a structured aid for reviewing clinical data, not as an automatic answer. If the output does not match the exam, repeat the measurement, review units, and confirm that the age or date used is correct.
For follow-up, compare results with prior measurements and document the reference source used. Important changes, extreme values, or therapeutic decisions should be evaluated with current guidelines and professional judgment.