Age Calculator
Enter your date of birth to discover your exact age down to the day, plus your total number of days lived.
Four-digit year (e.g. 1996)
Month number (1 = January, 12 = December)
Day of the month
Learn More About Age Calculator
What this age calculator shows
This calculator goes beyond a simple birthday count. It breaks your age into years, months, and days, and can also show your total days lived and your next upcoming birthday milestone.
That makes it useful for forms, planning milestones, recordkeeping, and satisfying curiosity when you want a precise answer instead of an approximate age.
Example age calculation
If someone was born on June 15, 1995 and today is April 23, 2026, they have not reached their 31st birthday yet. The calculator accounts for the exact date difference, so it can show the precise years, months, and days instead of rounding up.
That is especially helpful when the result needs to be exact, such as for legal thresholds, school enrollment, or age-based eligibility.
Why leap years matter
Leap years add an extra day to the calendar, which changes total day counts and can slightly change month-and-day breakdowns over long time spans. A rough estimate based on 365 days per year will drift over time.
By handling leap years automatically, the calculator gives a more reliable result than mental math or quick spreadsheet estimates.
Frequently Asked Questions
How accurate is this age calculator?
This calculator calculates your exact age down to the day by accounting for leap years and the exact number of days in each month. The total days lived figure is based on the Gregorian calendar and is accurate for dates after 1582 when the modern calendar was adopted.
Does the calculator account for leap years?
Yes. The calculator counts every leap year in your lifetime — years divisible by 4, except centuries not divisible by 400. This adds an extra day to your age calculation on or after each leap year birthday.
What is the difference between age in years and age in days?
Age in years counts your full birthdays, which is how old you are officially. Age in days gives the total count of days you have been alive, which is higher than simply multiplying years × 365 because it includes leap year days. This total is sometimes used in legal, medical, or statistical contexts.
What is ordinal age?
Ordinal age (like '25th birthday') tells you which birthday you are approaching. The calculator shows your next upcoming birthday in ordinal form, which is useful for planning birthday celebrations or milestone events.