Age Calculator
Find your exact age in years, months, days, total days alive, and how long until your next birthday.
Results update as you change your date of birth. Today's date is taken from your device clock; if it's wrong, the age will reflect that.
Formula
Age is calendar arithmetic between your date of birth and today's date — counted as whole years (you're 30 from your 30th birthday until the day before your 31st), then whole months and days from your last birthday for the precision breakdown. The day-of-week-born is computed from the Gregorian calendar using your DOB. Leap-year birthdays (29 February) celebrate on 28 February in non-leap years.
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Frequently asked questions
How is age calculated?▾
By comparing your date of birth to today's date using calendar arithmetic. The breakdown shows whole calendar years (you're 30 until the day before your 31st birthday), then months and days from your last birthday. Total days alive is the simple count of 24-hour periods.
How is the day-of-week-born computed?▾
Using the Gregorian calendar — the calendar in use across Europe since 1582 (when Pope Gregory XIII reformed the Julian calendar). For dates before 1582, your country may have been on the Julian calendar still — different rules apply for those, which this calculator does not handle.
Are leap-year rules included?▾
Yes. The Gregorian leap-year rule is: every 4 years, except every 100, except every 400. So 2000 was a leap year; 1900 wasn't. Leaplings (born 29 February) celebrate on 28 February in non-leap years in this calculator.
What's the EU pension/retirement age?▾
Varies by country. Most EU member states have retirement ages between 65 and 67, with several (France, Italy, Germany, Spain) recently raising or planning to raise theirs. Some allow earlier retirement with reduced benefits. Your country's social security site has the schedule for your birth year.
Does this work for legal-age thresholds (drinking, voting, etc.)?▾
Yes — enter your date of birth, and you'll see your exact current age. EU legal-age thresholds vary: voting age is 18 in most member states (Austria 16, Greece 17 for some elections); drinking age is 18 in most, 16 for beer/wine in some (Germany, Belgium); driving age is 17 (UK) or 18 (most EU).
What about Eastern Asian age conventions?▾
Not used here — this is the Western convention (you're N years old from your Nth birthday). Some East Asian cultures count age differently (you're 1 at birth, and everyone ages 1 year at New Year). South Korea formally moved to international age in 2023; Japan and China use international age in legal contexts. For East Asian age, add 1 (and possibly 2) to the figure here.