Your Age
Enter your birthday to see your exact age
Enter your birthday to calculate your age.
HOW IT WORKS
Enter your date of birth and instantly see your exact age in years, months, and days. The calculator shows how many days you've been alive and counts down to your next birthday.
COMMON USES FOR AGE CALCULATORS
Legal Requirements: Age verification for voting (18+), drinking alcohol (21+ in US), senior discounts (55+, 60+, 65+), driving permits, Social Security eligibility (62+).
Event Planning: Calculating exact age for milestone birthdays (18th, 21st, 30th, 40th, 50th, etc.), retirement age planning, anniversary celebrations.
Health & Wellness: Age-based health screenings (mammograms at 40+, colonoscopy at 45+), vaccine schedules, life insurance calculations, health risk assessments.
Fun Milestones: 10,000 days alive (~27.4 years), 20,000 days (~54.8 years), 30,000 days (~82.2 years). Many people celebrate these unique milestones instead of traditional birthdays.
WHY TRACK YOUR AGE IN DAYS?
Unique Perspective: Counting in days makes life feel more immediate and precious. Saying "I've been alive 10,000 days" feels more tangible than "27 years."
Goal Setting: Some people set "day milestones" (e.g., "I'll run a marathon by day 11,000") rather than age-based goals. It creates specific, date-driven targets.
Historical Context: You can calculate how many days old you were during major life events, making personal timelines more precise.
Child Development: For babies and toddlers, age in days/weeks is medically significant. Pediatricians track developmental milestones by days/weeks in the first year.
AGE CALCULATION ACCURACY
Leap Years: This calculator accounts for leap years (February 29) automatically. A leap year occurs every 4 years, except years divisible by 100 (unless also divisible by 400).
Time Zones: Age is calculated based on calendar dates, not precise time of birth. If you were born at 11 PM on January 1, you turn "1 day old" at midnight, not at 11 PM the next day.
Month Lengths: Months vary (28-31 days). This calculator uses exact date arithmetic, so "1 month old" from January 31 would be February 28 (or 29 in leap years).
Age vs. Birth Year: Your age depends on whether your birthday has passed this year. Someone born December 31, 2000, was 0 years old for most of 2001, not 1 year old.