Calculator
Enter your birth date to see exactly how long until your next birthday — and which age you'll be turning.
If your birth date is February 29th, this tool uses February 28th in non-leap years as your observed birthday, which is the most common convention — some people instead observe March 1st. Either is defensible; there's no official rule, since the Gregorian calendar simply doesn't have a February 29th most years.
Want your exact current age, not just a countdown to the next one? Use the Age Calculator.
Related
Exact age right now, in years, months, and days.
The same countdown math for any custom date.
Which named generation your birth year falls into.