The birthday calculator gives a precise answer to the question, “When is my birthday?” It also works as a detailed age calculator, letting you see your age measured in seconds, minutes, hours, days, weeks, months, or years.
In addition, the tool can function as a date-of-birth calculator if you already know how many days old you are, or as a birthday history tool if you’re curious about past milestones — for example, “On what date did I turn 14?”
How to Use the Birthday Calculator
If you’re asking yourself, “When is my birthday?”, follow these simple steps:
- In the first field, select your date of birth using the calendar icon. You can also type it manually by entering the first three letters of the month, followed by the day and year (for example: Sep 25, 1980).
- In the second field, choose the date for which you want to calculate your age and the remaining time until your next birthday. By default, this is set to today. If you want to include hours and minutes in the calculation, enable the option to count time.
- Using these two dates, the calculator will determine your age and display the result in the third field. You can switch between different time units to see how many seconds, days, weeks, or other units you’ve lived.
Below the calculator, you’ll also find a countdown showing how much time remains until your next birthday.
You can also use this tool to find out how old you were on a specific date in the past or how old you will be on a chosen date in the future.
