Age Calculator
Age Calculator
Enter your date of birth to find your exact age today, or on any other date.
The Age Calculator tells you exactly how old someone is, down to the day. Many people know their age in years, but forms, school admissions, job applications, and official documents often need a more precise answer. This free tool works out the years, months, and days between a date of birth and any date you choose, and it also shows the total number of days and weeks lived, plus when the next birthday will fall.
Everything is calculated locally in your browser. Your date of birth is never uploaded, sent to a server, or saved anywhere. You can use the tool as many times as you like, for yourself, your children, family members, or anyone else, without signing up or paying anything.
How to use
- Select the date of birth in the first field using the date picker.
- Leave the second field empty to calculate the age today, or pick another date to find the age on that past or future date.
- Click the Calculate Age button.
- Read the exact age, the totals in days, weeks, and months, and the date of the next birthday with the number of days left.
Frequently asked questions
How is the exact age calculated?
The tool compares the two dates carefully. It subtracts the years, months, and days, and when the day of the month in the later date is smaller, it borrows the correct number of days from the previous month. This gives the same result you would get by counting carefully on a calendar.
Can I find the age on a future date?
Yes. Enter any date in the second field, for example the first day of school or a retirement date, and the tool will show the age the person will be on that exact day.
What happens if I enter a future date of birth?
The tool will show a friendly error message and will not calculate a result, because a person cannot have an age before they are born. Simply correct the date and try again.
Is my information private?
Yes. All the maths happens on your own device inside this page. Nothing is stored, tracked, or shared, and closing the page removes everything you entered.
How do I use this as an age calculator in days?
Enter your date of birth and this age calculator in days shows your exact age in years, months and days, plus your total age in days — useful for anniversaries and 'days old' posts.
Related Tools
More free calculators from ToolVora — every tool runs entirely in your browser, with no sign-up and no uploads: