Age Calculator
Calculate your exact age in years, months, and days
How to Use
- âĸ Select your birth date from the calendar picker
- âĸ Click "Calculate My Age" to see your exact age
- âĸ View your age in years, months, and days
- âĸ See how many total days you have lived
- âĸ Find out how many days until your next birthday
Privacy & Security
All age calculations are performed locally in your browser. No birth dates, ages, or personal information are stored or transmitted. Your date of birth remains completely private.
About the Age Calculator
Our comprehensive age calculator computes your exact age from your birth date to today or any other date. Beyond simple years, see your age broken down into months, weeks, days, hours, and minutes. Discover interesting facts like your total days lived, upcoming birthday countdown, and even what day of the week you were born. Perfect for birthday planning, age verification, filling out forms, or simply satisfying curiosity about your precise age.
Key Features
Precise Age Calculation
Exact age in years, months, days, hours, and minutes
Multiple Time Units
See your age in days, weeks, months, and total hours lived
Next Birthday Countdown
Days remaining until your next birthday
Birth Day of Week
Find out which day of the week you were born
Age on Specific Date
Calculate age at any past or future date
Leap Year Aware
Accurately handles leap years for precise calculations
Age in Different Formats
View age in various meaningful formats
Easy Date Input
Calendar picker for simple date selection
How to Calculate Your Age
Enter Birth Date
Use the calendar picker or type your birth date (MM/DD/YYYY)
Choose End Date
Select today (default) or any specific date to calculate age at that time
View Detailed Results
See your age in years, months, days, and other time units
Explore Additional Info
Check birthday countdown, birth day of week, and total days lived
Age Calculator Uses
- Birthday Planning: Calculate exactly how many days until birthdays to plan celebrations
- Age Verification: Confirm exact age for forms, insurance, or legal requirements
- Milestone Tracking: Count down to significant age milestones (18, 21, 50, etc.)
- Baby Age: Track infant age in weeks and months for development milestones
- Historical Events: Calculate how old someone was at historic moments
- Retirement Planning: See exactly how long until retirement age
Frequently Asked Questions
Why does my age show differently in months vs days?
Months have varying lengths (28-31 days), so age in months doesn't directly multiply to age in days. Our calculator accounts for actual calendar days, including leap years, providing precise calculations. For example, 1 year = 365 or 366 days depending on leap years, not simply 12 Ã 30.
How do I calculate age in months for babies?
Simply enter the baby's birth date and select today's date. The calculator shows age in months and days, which is the standard way to track infant development. Many milestones are tracked in months (2 months, 6 months, 12 months, etc.) rather than weeks after the first few months.
Does the calculator account for leap years?
Yes! Our calculator automatically accounts for leap years (every 4 years, except century years unless divisible by 400). This ensures accuracy for people born on or around February 29th and for precise day counts over many years.
What if I was born on February 29th?
If you were born on leap day (February 29th), your exact birthday only occurs every 4 years. The calculator handles this correctly, and for non-leap years, your 'birthday' is typically celebrated on February 28th or March 1st. The day counter still counts actual days accurately.
How can I calculate someone's age at a past date?
Enter their birth date as normal, but for 'calculate age to' select a specific past date instead of today. This is useful for historical records, determining age at significant events, or filling out backdated documents.
Why is age calculated differently in some countries?
Some cultures (notably Korea and parts of East Asia) calculate age differently, considering newborns as 1 year old and adding a year on New Year's Day rather than birthdays. Our calculator uses the international standard (Western method) where you're 0 at birth and age increases on your birthday.
Why Use an Age Calculator?
While basic age calculation seems simple, accounting for varying month lengths, leap years, and precise day counts can be complex. Our age calculator eliminates mental math errors and provides detailed breakdowns beyond just years. Whether planning a milestone birthday, determining age eligibility for events, tracking child development milestones, or satisfying curiosity about total days lived, accurate age calculation matters. The additional insights like next birthday countdown and birth day of week add interesting personal information you might not otherwise know.