Instant · Accurate · Free
How old am I
on any date?
Enter your birthday and find out your exact age down to the minute
Please enter a valid date of birth.
Exact breakdown
Famous birthdays — try them
How age is actually calculated
Calculating exact age sounds simple but has one common trap: you can't just subtract birth year from current year, because it depends on whether the birthday has already happened this year. Someone born June 26, 1990 is 35 on June 25, 2026, and turns 36 the very next day. The calculator handles this automatically, along with leap years — someone born on February 29 still has a real birthday every four years, and the calculator resolves the in-between years correctly rather than skipping or guessing.
Age in different units
Big milestones look different depending on the unit. Here's roughly what common ages translate to:
Figures are approximate and don't account for the exact placement of leap years in a given birth year — use the calculator above for an exact figure on a specific birth date.
Common reasons people calculate exact age
Exact age comes up more often than it seems: eligibility checks for age-restricted activities (driving permits, voting, alcohol purchase), retirement and benefits milestones (Social Security full retirement age, Medicare eligibility at 65), school enrollment cutoff dates, visa and legal document applications that require age in years and months, and generational cohort definitions, which people often check their own birthday against.
Common questions
How do I calculate my exact age?
Enter your date of birth above and the date you want to calculate your age on (defaults to today). The calculator shows your exact age in years, months, days, hours, and minutes.
How old will I be on a future date?
Enter your birthday, then change the "calculate age as of" date to any future date. The calculator will show exactly how old you'll be on that day.
How old was someone who was born in the past?
Enter their birth date and set the "as of" date to any historical date to find out their age at that point in time.
Does the calculator account for leap years?
Yes — the calculator handles leap years automatically, so your age calculation is always accurate regardless of whether your birthday falls on February 29.
What is my age in days or hours?
Enter your date of birth above — the results panel shows your total age broken down into years, months, days, and hours, alongside the standard years/months/days figure.
How is age calculated for legal age requirements?
Most legal age requirements (voting, driving, alcohol, retirement benefits) use the calendar-day method: you reach a given age on the calendar anniversary of your birth date, not on a rounded or averaged date. This calculator uses the same method.