About AgeCalculator.ai
A single calendar-accurate engine, packaged into more than 100 focused calculators.
What this site is
AgeCalculator.ai is a free library of date and age calculators — from a basic "how old am I" tool to pregnancy dating, pet-year conversion, and age-eligibility checks for school, work, and government schemes.
Every calculator shares the same underlying date-math engine, so results stay consistent no matter which tool you land on: calendar-accurate years, months and days, correct handling of leap years, and no rounding shortcuts.
Privacy by design
Every calculation runs in your browser using JavaScript. Dates you enter are never transmitted to a server, logged, or stored — closing or refreshing the page clears everything.
A note on the health & eligibility tools
Calculators that touch health (BMI, biological age, growth percentile) or official eligibility (school, government, exam age limits) are general-purpose reference tools, not medical or legal advice. Health results are simplified and non-diagnostic; eligibility age limits are pre-filled as a starting point only — always confirm current official rules with the relevant authority.