Birthday Calculator - Calculate Next Birthday & Age Online
Free online birthday calculator to calculate your next birthday, age in days, weeks, and months. Perfect for birthday planning and age tracking.
Birthday Information
Birthday Results
Enter your birth date to calculate birthday information
About Birthday Calculator
The Birthday Calculator helps you calculate your next birthday, current age, and time remaining until your special day.
Calculations:
- Current Age: Years since birth date
- Next Birthday: Date of your next birthday
- Days Until Birthday: Countdown to next birthday
- Age in Days: Total days since birth
Birthday Planning:
- Plan birthday parties and celebrations
- Calculate age for legal purposes
- Track milestone birthdays
- Plan age-appropriate activities
Age Calculations:
- Accounts for leap years
- Considers month and day differences
- Accurate to the day
- Handles edge cases
Applications:
- Personal birthday planning
- Age verification
- Event planning
- Legal documentation
- Educational purposes
Note: This calculator uses the Gregorian calendar and accounts for leap years. Results are accurate to the day.
Frequently Asked Questions
How do I calculate my next birthday?
Enter your birth date and the calculator will determine your next birthday by finding the same month and day in the current or next year.
What if my birthday is today?
If today is your birthday, the calculator will show 0 days until your next birthday and your current age.
How accurate is the age calculation?
The age calculation is accurate to the day, accounting for leap years and month differences.
Can I calculate someone else's birthday?
Yes, you can enter any birth date to calculate birthday information for that person.
What about leap year birthdays?
The calculator handles leap year birthdays correctly, including those born on February 29th.