Age Calculator by Date of Birth (Years, Months, Days)

Find your exact age in years, months and days — plus total weeks, days, hours and your next birthday

0 Years
0 Months
0 Days
0 Total Months
0 Total Weeks
0 Total Days
0 Total Hours
— Next Birthday

How to Calculate Your Age by Date of Birth

This free age calculator tells you your exact age in years, months and days from your date of birth. Simply pick your birth date, keep the second field on today's date (or change it to any date you need), and click Calculate Age. You instantly get a complete breakdown: your precise age, total months lived, total weeks, total days, total hours and a countdown to your next birthday including the day of the week it falls on.

Knowing your exact age in years, months and days is often required for government job applications, school admissions, competitive exam eligibility, visa forms and insurance documents, where age must be stated as on a specific cut-off date. Instead of counting months on your fingers, set the "Age as on date" field to the official cut-off date and the calculator does the rest with full calendar accuracy — leap years and 30/31-day months are all handled automatically.

Why exact age matters

Two people born just one day apart can fall on different sides of an eligibility cut-off. Exam boards, recruitment agencies and immigration departments usually specify age limits as "not more than X years as on [date]". This tool removes any guesswork: the calculation runs in your browser, results appear instantly, and your date of birth never leaves your device — nothing is uploaded or stored.

Frequently Asked Questions

Select your date of birth above and click Calculate Age. The tool compares it with today's date (or any date you choose) and shows your age in years, months and days, plus totals in months, weeks, days and hours.
Yes. It uses real calendar dates, so leap years (29 February) and months of different lengths are handled automatically. Results are always calendar-accurate.
Yes. Change the "Age as on date" field to any date — an exam cut-off, application deadline or future birthday — and you'll see your exact age on that date.
No. Everything runs locally in your browser. Your date of birth is never uploaded, saved or shared with any server.

Related Tools