Wondering “how old am I today” or want to calculate your exact age in years, months, and days? Enter your date of birth below to get your precise chronological age, total days lived, and days left until your next birthday – all calculated instantly in your browser.
Age Calculator – Find Your Exact Age From Date of Birth
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| Total weeks lived | – |
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| Total hours lived (approx) | – |
Age Difference Calculator – Compare Two Ages or Birth Dates
Use this age gap calculator to find the exact difference between two people’s ages, useful for family trees, dating age gaps, sibling spacing, or eligibility checks that require a specific age difference.
How to Calculate Age From Date of Birth
This age calculator works by comparing your date of birth to today's date (or any custom date you choose), then breaking the gap down into complete years, remaining months, and remaining days - the same way age is calculated on official documents and forms.
Calculate age from date of birth manually
To calculate age from date of birth by hand: subtract the birth year from the current year. If the current month and day haven't reached the birth month and day yet, subtract one year from that result. This calculator automates that process instantly and also shows total days, weeks, and hours lived.
How many days until my next birthday
The calculator also works out how many days remain until your next birthday by comparing today's date to your next upcoming birth date, rolling over to next year automatically once your birthday has passed.
Frequently Asked Questions
How do I calculate my exact age from my date of birth?
Enter your date of birth into the Age Calculator above and click Calculate My Age. It instantly shows your exact age in years, months, and days, along with total days and weeks lived.
How old am I today?
Enter your date of birth and leave the "as of" field empty - the calculator automatically uses today's date to show your current exact age.
How many days until my next birthday?
After calculating your age, the results section shows a countdown with the exact number of days remaining until your next birthday.
Can I calculate my age on a specific past or future date?
Yes. Use the "Calculate age as of" field to pick any date, and the calculator will show what your age was, or will be, on that specific date. What is an age difference calculator used for?
An age difference calculator finds the exact gap between two people's birth dates in years, months, and days. It is commonly used for family records, dating age gaps, sibling age spacing, or checking eligibility rules that depend on a minimum or maximum age difference.
How accurate is this age calculator?
The calculator accounts for varying month lengths and leap years, so results are accurate to the exact day based on the dates you enter.
Does this age calculator store or send my date of birth anywhere?
No. All calculations run directly in your browser using JavaScript. Your dates of birth are never sent to or stored on any server.
Can I use this to calculate someone's age at the time of death?
Yes. Enter the date of birth, then set the "Calculate age as of" field to the date of death to get the exact age in years, months, and days at that time.
An Age Calculator is a simple online tool that helps you calculate your exact age from your date of birth. Instead of manually counting years, months, and days, you can enter your birth date and instantly find your current age. An exact age calculator by date of birth can also provide additional information such as total months, weeks, days, and the date of your next birthday.
If you want to know how old you are exactly, an age calculator can give you a more detailed result than simply subtracting your birth year from the current year. The calculation considers the actual length of each month and accounts for leap years, allowing your age to be displayed accurately in years, months, and days.
Our age calculator in years months and days lets you calculate your age using your date of birth and an optional target date. This means you can find your age today or calculate age on a specific date in the past or future. This feature can be useful when checking age requirements, calculating an age for a particular event, or determining how old someone will be on a future date.
An age calculator from date of birth can also help you find your total age in different time units. Depending on the tool, you may be able to see your total days, weeks, or months lived as well as the number of days remaining until your next birthday. These additional calculations make it easier to understand your age beyond the standard years-and-months format.
Use our free Age Calculator to quickly find your exact age without performing complicated calendar calculations yourself. Enter your date of birth, choose today's date or another reference date, and calculate your result instantly. The calculator handles different month lengths and leap years automatically, giving you a convenient way to calculate age from date of birth accurately.