Calculate age from a date of birth. Use this free age calculator to find age in years, months, and days, plus total days, weeks, months, hours, and time until the next birthday.
Date of birth:
Enter the birthday or starting date.
Calculate age on:
Enter the date you want to calculate age for. This can be today, a past date, or a future date.
Exact age:
The calculator breaks the difference into completed years, remaining months, and remaining days.
Next birthday:
The calculator finds the next birthday after the selected age date and shows how many days remain.
An age calculator is useful for birthdays, applications, school dates, eligibility checks, records, age milestones, planning events, and finding someone’s exact age on a certain date.
It is also helpful when you need total days, weeks, months, or years instead of only a birthday age.
Your result shows the age between the birth date and selected age date. It may include exact age, decimal years, total months, total weeks, total days, total hours, and days until the next birthday.
An age calculator finds the amount of time between a date of birth and another selected date.
Yes. Enter a future date in the calculate age on field to see the age on that date.
Yes. The calculator uses calendar date math, so leap years are handled automatically.
Yes. The result includes the next birthday date and the number of days remaining until it.