Birthday Calculator
Calculate your birthday information including when your next birthday is, how many days until it, and what age you'll be. Our free online birthday calculator helps you keep track of upcoming birthdays and plan celebrations.
Birthday Information You'll Get
- •Your current age in years, months, and days
- •Exact date of your next birthday
- •Number of days until your next birthday
- •Day of the week your birthday falls on
- •Your age on your next birthday
Fun Birthday Facts
Most Common Birthday
September 9th is the most common birthday in the US
Least Common Birthday
February 29th (leap day) is the rarest birthday
Birthday Probability
About 1 in 365 people share your birthday
Birthday Week
Most birthdays fall on weekdays