Chronological Age Calculator

Chronological Age Calculator is a free, privacy-focused online tool that calculates your exact age from your date of birth to today—or to any specific test date—with precision down to years, months, days, hours, minutes, and seconds.

Unlike simple year-based age calculators, this tool accounts for varying month lengths, leap years, and calendar intricacies to deliver an accurate chronological age in a detailed years‑months‑days format. It's ideal for anyone who needs more than an approximate age: parents tracking infant development, educators and clinicians conducting age‑based assessments, researchers, or anyone curious about their exact age.

• Multiple calculators: Chronological Age, Age Difference, Days Alive, Months Old, Age on Date, and Age for Testing (birth date to test date).
• Live, real‑time display: See your age update every second, plus total days alive, next birthday countdown, birthstone, and zodiac sign.
• Privacy‑first: All calculations run locally in your browser; no birth data is ever sent to a server.
• No signup, no download: Instant results with a clean, ad‑free interface.

The site also provides educational guides on chronological vs. biological vs. corrected age, manual calculation methods, and FAQs—making it a comprehensive resource for age‑related questions.