About us
Time, counted precisely.
16 free calculators that answer every question about age, exact to the day and private by design.
16calculatorsAge Calculators, Birthday Calculators, Pet Age Calculators
0dates uploadedEvery calculation runs in your browser
366days in a leap yearEvery February 29 counted
$0to useNo sign-up, no paywall
What we do
AgeCountLab is a collection of calculators for every question about age: how old you are to the day, how many days you have lived, the gap between 2 people, when your next birthday falls, your Korean age and how old your dog or cat is in human years.
How we build
- Calendar-exact. Every calculation uses real month lengths and leap years, never 30-day months or 365-day years.
- Explained. Each tool has an interactive diagram that shows how the answer is worked out, with the formula in plain text.
- Private. Calculations run in your browser. Your dates are not sent to us.
- Honest about limits. Where a figure is an estimate, such as pet ages or eligibility rules, we say so and point you to the authority that decides.
- Checked. Worked examples on every page are computed by the same code as the calculator, never typed by hand.
Get in touch
Found a mistake or want a new calculator? Contact us. We read every message.