Age Calculator
Enter a birth date to see exact age in years, months and days, plus a countdown to the next birthday.
How exact age is calculated
This tool counts full years, then full months within the current year, then remaining days — the same way people count age in everyday conversation, rather than simply dividing total days by 365.
Calculated instantly, on your device
All date math runs directly in your browser — no server call, no data stored.
Frequently asked questions
Can I calculate age on a date other than today?
Yes, change the "Calculate age on" field to any date to see the age on that specific day.
Does it account for leap years?
Yes, because the calculation uses actual calendar dates rather than a fixed number of days per year.
Can I use this for pet or product age?
Yes, the calculation works the same regardless of what the "birth date" represents — a pet's birthday, a product's manufacture date, or a company's founding date.
Related tools
You might also need these while working on the same task.
Add or subtract days, weeks, months or years from a date, or find the difference between two dates.
Open toolEstimate the due date and current gestational week from the last period.
Open toolCreate a live countdown to birthdays, trips, deadlines and holidays.
Open toolCreate a Brazilian PIX copy-and-paste QR code in seconds.
Open tool