Enter any birth date to see your age in years, months and days, plus total weeks, days, hours and the next birthday countdown.
Intuitive, friction-free workflow designed to get you from blank slate to job-ready in minutes.
Pick your date of birth.
Optionally change the 'as of' date to calculate age on a future or past date.
Read the breakdown below.
Engineered for speed, privacy, and recruiter compliance
Targeted for modern job applications and career moves
Calendar math is harder than it looks, leap years and month lengths trip up most calculators. Ours uses the standard date library that powers banks and accounting software.
Zero paid tiers, hidden subscriptions, or paywalls
No forced email signups or credit meters
Parsed inside your browser, never stored in DB
No watermark branding or export limits
Authoritative standards for passing ATS filters and catching hiring managers' attention.
Leap years, varying month lengths and time zones make manual age math unreliable. Someone born on 29 February has edge cases in non-leap years. An age calculator accounts for calendar rules automatically.
School admissions, insurance forms, visa applications and sports age brackets often require age as of a specific date, not today. Use this tool to verify eligibility before you submit official paperwork.
Straightforward answers regarding ATS compliance, PDF rendering, and data privacy.
Yes. People born on February 29th have their age incremented on March 1st in non-leap years, matching the legal convention in most countries.
We count the start date as day 0 (you were 0 days old at birth). Some calculators count day 1, which is why answers can differ by one.
Set the 'as of' date to the other person's date of birth and the result is their age relative to the first person.
Ages are calculated against local midnight. Time zones only matter on the day of birth and the day of the calculation.
Enter your date of birth and the calculator instantly shows your exact age in years, months and days as of today. It accounts for leap years and different month lengths, so the result is accurate to the day.
Along with years/months/days, the tool shows the total number of days you have been alive, handy for milestone birthdays, official forms, or simple curiosity about how many days old you are.
In-depth articles and tutorials to get the most out of Age Calculator.
Explore calendar math and astronomical timekeeping. Discover the 400-year Gregorian leap year rule, atomic clock leap seconds, and age calculations.
Want to know your exact age? Learn how to calculate your age in years, months, and days, understand your next birthday, and calculate the difference between two dates with an online age calculator.