Adjusted Age Calculator
Calculate the corrected age for preterm infants based on their gestational age at birth and current chronological age.
Published by:
isCalculator Editorial Team
Was this calculator helpful?
How to use this tool?
How to Use the Adjusted Age Calculator
- Enter Gestational Age at Birth: Input the number of weeks (22–42) and days (0–6) the baby was born. Full term is 40 weeks.
- Enter Chronological Age: Input the baby’s actual age since birth in years (0–5), months (0–11), and days (0–30).
- Click “Calculate Adjusted Age”: The calculator subtracts the difference between full term (40 weeks) and the baby’s gestational age from their chronological age.
- Read the result: The adjusted age is shown in years, months, and days. If the result is negative, it means the baby is not yet full term.
Note: All inputs are required. Use whole numbers only. The calculator assumes 1 month = 30 days and 1 year = 365 days for simplicity.
Previous Results
| Result | Inputs | Date |
|---|
Frequently Asked Questions
Adjusted age (or corrected age) is the age of a preterm infant calculated from their original due date, not their birth date. It helps assess developmental milestones appropriately.
Subtract the number of weeks the baby was premature from their chronological age. For example, a baby born at 30 weeks (10 weeks early) who is now 6 months old has an adjusted age of about 3.5 months.
Preterm infants may develop at a different pace than full-term babies. Using adjusted age provides a more accurate benchmark for growth and development.
