Age Calculator

This calculator gives your exact age between a date of birth and any other date — in completed years, months and days, the way forms and certificates ask for it. It also counts the total days you have lived and how long until your next birthday.

1. Pick your date of birth.
2. Leave "Age on" as today, or change it to find your age on a past or future date — useful for exam and job eligibility cut-offs.
3. Read your age in years, months and days, with totals underneath.
4. The ring shows how far you are through your current year of life.

• Months are counted as calendar months, so "1 month" can be 28 to 31 days depending on which months fall in between.
• If you were born on 29 February, the birthday in non-leap years is counted as 28 February.
• Times of day and time zones are ignored; it works in whole calendar days.
• Your date of birth is used only inside this page to do the arithmetic. It is not saved, not put in the page address and not sent anywhere.

Change "Age on" to the cut-off date given in the notification. Many exams and jobs specify an age as on a fixed date rather than today.

Some tools count a month as 30 days. This one adds whole calendar months first and then counts the remaining days, which matches how age is usually stated on documents.

Your age on your birth date is zero days. On your first birthday it is exactly one year, zero months and zero days.