Calculator
Free Age Calculator
Calculate exact age by date of birth in years, months, and days for exams.
About this tool
"How old am I, exactly?" sounds like a question with an obvious answer, but try working it out manually and you'll end up second-guessing leap years and whether your birthday has happened yet this year. This calculator does it properly - enter your date of birth, and it gives you the exact age in years, months, and days, accounting for things like leap years correctly.
It's used for more than just curiosity, too. A lot of forms ask for age in a specific format, school and job applications sometimes need an exact age calculation, and parents use tools like this to track a child's age in months during the early years when that level of precision actually matters.
We've also added a couple of small extras on the same page - how many days until your next birthday, and (if you're comparing two people) the age difference between two dates. Small features, but they're things people search for almost as often as the basic age calculation itself.
The date picker handles any valid birth date, past or present, and the calculation updates instantly without needing you to hit a submit button.
How to use
Step 1: Select your Date of Birth using the date picker.
Step 2: Select the As of date (it defaults to today's date).
Step 3: Click the Calculate Age button.
Step 4: View your exact age in years, months, and days, along with additional stats like next birthday and zodiac sign.
Frequently Asked Questions
Yes, the calculation factors in leap years automatically, so the result stays accurate regardless of when you were born.
Yes - just enter whichever date of birth you want to check.
The main result is in years, months, and days, which covers infant ages well since the "months" figure is broken out separately.
Yes, that's included as a separate feature on the same page - enter both dates of birth to see the gap between them.