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Age Calculator
Find out your exact age, how many days until your next birthday, what day of the week you were born, and more.
About this age calculator
This free age calculator works out your exact age in years, months and days from any date of birth. It also tells you which day of the week you were born, how many days have passed since your birth, and how many days remain until your next birthday. Use the "Days between dates" tab to find the difference between any two dates, or the "Add / subtract days" tab to calculate a future or past date from any starting point.
Frequently asked questions
Enter your date of birth in the "Date of birth" field. The "Age as of" field defaults to today but you can change it to any date. Click "Calculate age" to see your exact age in years, months and days.
Enter your date of birth in the "How old am I?" tab and click Calculate. The result shows exactly how many days remain until your next birthday, and the date it falls on.
Use the "Days between dates" tab. Enter a start date and end date, then click Calculate. You'll see the total days, weeks, months and years between the two dates.
Enter your date of birth in the "How old am I?" tab and click Calculate. The result card includes the day of the week you were born.
Use the "Add / subtract days" tab. Set the start date to today, enter 90 in the amount field, make sure "Days" is selected, then click Add. The result shows the exact future date.