Age Calculator
Find an exact age in years, months and days, and days until the next birthday.
Calculated in your browser.
Frequently asked questions
How does the age calculator work?
It compares your birth date to today and returns your exact age in years, months and days, along with totals and a countdown to your next birthday.
How do I calculate age in years, months and days?
The tool subtracts your birth date from the current date, borrowing across months and years so the breakdown accounts for the differing lengths of each month.
Can it show my age in total days or weeks?
Yes. Besides years, months and days, it gives your total age expressed as a number of days and weeks lived.
How many days until my next birthday?
The calculator counts the days from today to your next birthday, which is handy for planning celebrations or milestones.
Does it handle leap years?
Yes. It uses real calendar dates, so leap years and February 29 are accounted for automatically in the day counts.
Can I calculate age on a past or future date?
Yes. You can enter any reference date instead of today to find how old someone was or will be on that specific day.
Is my birth date kept private?
Yes. The calculation runs in your browser and your birth date is never uploaded or stored.