Calculate your exact age in years, months and days, and find out how many days until your next birthday.
It calculates your exact age in years, months and days as of the selected date.
The tool shows how many days until your next birthday.
Yes, change the As of date field.
The calculator breaks elapsed time into completed calendar years, completed months after those years, and remaining days. It also shows the total number of days between the date of birth and the selected “As of” date, plus the number of days until the next birthday.
Use the page to check someone's exact age on a past event date, work out how old a child will be when school or travel begins, plan an upcoming milestone birthday, or compare ages without manually counting across different month lengths and leap years.
Years can contain 365 or 366 days and months range from 28 to 31 days. Calendar age therefore follows actual calendar boundaries. Dividing total days by 365 can produce a different result from the conventional years-months-days age used for birthdays and most everyday purposes.
This is a calendar calculation, not a legal determination. Rules for age-based eligibility, leap-day birthdays, deadlines and when a person legally “attains” an age can vary by jurisdiction or program. Confirm the official rule when the answer affects licences, benefits, contracts, schooling or another formal requirement.