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Age Calculator

Find your exact age in years, months, days — and more.

Your Birthday

Your Age

You are
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Frequently Asked Questions

Enter your date of birth and today's date (pre-filled). The calculator shows your exact age in years, months, and days, plus total weeks, days, hours, and minutes since you were born.
Enter your date of birth and the calculator shows your total age in days. For a 30-year-old born on 1 January, that's roughly 10,950 days.
The calculator automatically shows your next birthday date and how many days away it is, right below the main result.

How Age Is Calculated

Calculating your exact age is more nuanced than subtracting your birth year from the current year. The calculator accounts for the exact month and day to give you a precise result in years, months, and days — plus breakdowns in weeks, hours, and minutes.

Worked Example

Born on 15 March 1990, calculated as of 27 February 2026: You are 35 years, 11 months, and 12 days old. That's approximately 1,871 weeks, or 13,098 days, or 314,352 hours since birth. Your next birthday is 16 days away, when you'll turn 36.

Fun Facts About Age

You've been alive for over a billion seconds by age 31 years and 251 days. You spend roughly one-third of your life asleep — so a 36-year-old has been awake for about 24 years total. The day of the week you were born cycles through all seven days over your lifetime — the calculator shows which day you were born on.

Related Calculators

The date calculator finds the difference between any two dates or adds time to a date. The BMI calculator is useful for health tracking at any age.

KwikSum's age calculator shows your exact age in years, months, and days, plus total months, weeks, days, hours, and minutes since you were born. It also shows the day of the week you were born and how many days until your next birthday.