Age Calculator
Calculate your exact age or the age between two dates. Find out how old you are in years, months, weeks, and days.
Leave empty to calculate age today
What is an Age Calculator?
An age calculator is a tool that determines your exact age or the age between two specific dates. It calculates how many years, months, weeks, and days have passed since a birth date or between two dates. This is useful for determining your current age, calculating the age difference between two people, or finding out how much time has passed between any two dates.
Our age calculator provides precise calculations, accounting for leap years and varying month lengths to give you an accurate breakdown of your age in multiple formats.
How to Use the Age Calculator
- Enter birth date: Input the date of birth in the first field. This is the starting point for the age calculation.
- Enter end date (optional): If you want to calculate age at a specific date, enter it here. Leave it empty to calculate your current age.
- Calculate: Click "Calculate Age" to get your age broken down into years, months, days, total days, and total weeks.
Common Use Cases
Personal Age Calculation
Find out your exact age in years, months, and days. Perfect for birthdays, milestones, or simply knowing your precise age.
Age Difference
Calculate the age difference between two people by entering their birth dates and comparing the results.
Historical Age
Determine how old someone was on a specific date in the past by entering both the birth date and the historical date.
Future Age
Calculate how old you or someone else will be on a future date for planning purposes.
Frequently Asked Questions
How accurate is the age calculator?
Our age calculator is highly accurate, accounting for leap years and the varying number of days in each month. It provides precise calculations down to the day.
Can I calculate age for a future date?
Yes, you can enter any end date (including future dates) to calculate how old someone will be on that date. However, the end date cannot be before the birth date.
What if I don't know the exact birth date?
For the most accurate results, you'll need the exact birth date. If you only know the year, you can use January 1st of that year as an approximation, but the results will be less precise.
Does the calculator account for leap years?
Yes, our calculator automatically accounts for leap years, ensuring accurate calculations even for dates spanning multiple leap years.
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Cite This Calculator
Reference this calculator on your website or in your work using the citation below:
HTML Citation Code:
<p>Calculator: <a href="https://onlinecalculator.co.uk/time/age-calculator" target="_blank">Age Calculator</a> - OnlineCalculator.co.uk</p>APA Style Citation:
OnlineCalculator.co.uk. (2025). Age Calculator. Retrieved from https://onlinecalculator.co.uk/time/age-calculatorNote: This calculator is free to use and reference. No permission required for educational or commercial citation.