Last Updated: January 2025
We will be completely honest with you — because that is exactly the kind of tool we are.
Chronological Age Calculator was built for speech therapists, school psychologists, occupational therapists, pediatric professionals, educators, and parents. We are proud of what we have created. And because accuracy matters deeply to us, we want to be fully transparent about what this tool is — and what it is not
For Informational Purposes Only
The free Chronological Age Calculator on SmartAgeCalc.com is provided for general informational and educational use only. It is built on the standard chronological age calculation formula — including the Lewis and Lewis subtraction method — used in professional assessments worldwide.
However, SmartAgeCalc.com is not a licensed medical provider, certified psychological testing service, or accredited clinical institution. The results generated are reference outputs — not certified clinical measurements. We provide the math. The professional judgment is always yours.
Professional Responsibility Stays With You
If you are a licensed professional — an SLP, school psychologist, occupational therapist, developmental pediatrician, or educational evaluator — your professional and ethical responsibility to verify all calculations independently remains fully intact before recording any result on an official assessment form, clinical report, or IEP document.
SmartAgeCalc.com accepts no liability for assessment scoring errors, misdiagnoses, incorrect IQ calculations, or clinical decisions made based on this tool’s output.
Corrected Age for Premature Babies
The corrected age feature inside Chronological Age Calculator provides a general estimated adjusted age based on weeks premature entered by the user. This is a reference estimation only — not a certified neonatal measurement. For clinical decisions involving premature infants, always consult a qualified medical professional.
Accuracy — Our Commitment and Our Limits
We test Chronological Age Calculator regularly and fix issues fast. However, incorrect date entry, browser compatibility differences, or device-specific factors may occasionally affect output. Always double-check the dates you entered before relying on the result.
No Affiliation With Assessment Organizations
References to Pearson Clinical, Pearson UK, Pearson Australia, ASQ, Brigance, Peabody, Gesell, LAUSD, Super Duper, and Home Speech Home are made for informational context only. Chronological Age Calculator is not affiliated with, endorsed by, or officially partnered with any of these organizations.
If anything ever looks wrong or raises a question — reach out. We read every message personally.
📧 ashbalch26@gmail.com 🌐 smartagecalc.com/contact-us
Chronological Age Calculator — Honest. Accurate. Built for Professionals.
