Age Calculator – Full Age Breakdown

What this tool does. Pick your date of birth, confirm the comparison date (it defaults to today), and the Age Calculator shows your exact age in years, months, and days — plus total age in months and days, total days lived, and quick links to convert those days into hours, minutes, and seconds using dedicated converters.

How it works. The calculator compares your birth date with the “Age on this date” fields. It handles different month lengths and leap years correctly, so if you’re checking a future date or a past snapshot, the breakdown stays accurate. If the comparison date is earlier than your birthday, you’ll be prompted to fix it instead of getting a wrong result.

Clear breakdown. At the top of the result you’ll see a line like Your age on November 6, 2025: followed by 25 years 10 months 5 days. Under that, the facts panel lists your age in months and days, total days lived, then pointer links for hours, minutes, and seconds via the Days to Hours Converter, Days to Minutes Converter, and Days to Seconds Converter.

Why it’s useful. You might need an exact age for visa and immigration forms, school or competition eligibility, pension rules, age-restricted services, or fun stats like “how many days old am I?”. Doing it manually across leap years or long ranges is easy to mess up; this tool gives you a reliable answer in one click.

Step-by-step use. Choose your Date of birth using the three dropdowns, then adjust Age on this date if you want to check a specific day. Hit Calculate age to see your full breakdown. You can repeat this as many times as you need by changing either date and running the calculation again.

Next birthday insight. The result also shows how many days are left until your next birthday based on the comparison date. If the comparison date lands exactly on your birthday, you’ll see a neat whole-year result with 0 days until the next one.

Connect with related tools. Compare two people in the Age Difference Calculator, check your age on past milestones with the How Old Was I Calculator, or switch to the Weeks Between Dates Calculator for longer timelines and project planning.

Accuracy & privacy. Everything runs locally in your browser, with real calendar rules (including leap years) and no data sent anywhere. As long as your device date and time zone are correct, you can safely use this tool for personal, legal, or work-related checks.