Age Calculator

Calculate Your Exact Age — Free

Enter a birth date and get your exact age instantly — in years, months, and days, plus how many days remain until your next birthday.

How to Calculate Age

Enter a date of birth and, optionally, a date to calculate the age as of — defaulting to today. Your exact age appears instantly, broken down into years, months, and days, along with a countdown to the next birthday.

Why the Exact Breakdown Is Useful

"How old are you" usually gets answered in whole years, but plenty of situations call for more precision — age in months matters for a baby's development milestones, exact day counts matter for eligibility rules or legal age calculations, and knowing precisely how many days until a birthday is just genuinely handy to know.

Good Uses for This Tool

Working out someone's exact age for a form or application, calculating a baby's age in months and weeks, checking how many days remain until a birthday, or figuring out the age difference between two people.

Is It Actually Private?

Yes. The calculation happens entirely in your browser — nothing you enter is sent to a server.