About Us

Precision age calculation, simplified for professionals.

Calculating chronological age is a fundamental, yet surprisingly tedious task for speech-language pathologists, special educators, clinical psychologists, and pediatricians. A single mathematical error in carrying over months or leap years can invalidate standardized test scores like the WISC, WPPSI, or Brigance.

Our Mission

We built the Chronological Age Calculator to completely eliminate human error in date math. Our mission is to provide a free, wildly fast, and clinically accurate tool that respects strict protocols—like the Pearson "Borrow-30" rule and gestational age prematurity adjustments.

Why Choose Us?

• Clinical Accuracy: Built-in toggles for standardized testing rules.
• Privacy First: No data leaves your browser. Zero cloud tracking of patient or student DOBs.
• Bulk Processing: Support for CSV uploads to process entire classroom rosters in seconds.
• Free Forever: No paywalls, no subscriptions.

Get in Touch

We are constantly looking to improve our calculator based on feedback from the clinical and educational community. If you have feature requests or need support, contact us anytime.