Age Calculator
What is an Age Calculator?
An Age Calculator is a free online tool that calculates your exact age from your date of birth to any target date. It gives you your age broken down into years, months, and days — far more precise than just knowing which year you were born in.
Beyond your exact age, this calculator also tells you the total number of days you have lived and counts down the days to your next birthday — making it a fun and useful everyday tool.
How to Use This Age Calculator
- Date of Birth: Select your birth date from the date picker.
- Calculate Age On: By default it's today's date, but you can change it to calculate your age on any past or future date.
- Your age in years, months, and days is instantly displayed along with total days lived and a birthday countdown.
Common Uses of an Age Calculator
- Verifying age eligibility (for driving licences, voting, retirement, scholarships)
- Calculating age at a specific date in the past or future
- Finding someone's age on a special occasion
- Date difference calculations between any two dates
- Planning milestone birthdays and anniversaries
Frequently Asked Questions
How is age calculated exactly?
Age is calculated by finding the difference between the birth date and the target date. Years are counted first, then remaining months, then remaining days — accounting for varying month lengths and leap years.
Does this calculator handle leap years?
Yes. The calculator correctly accounts for leap years (years with 366 days) when calculating the exact number of days lived and the total age in days.
Can I calculate age for a past or future date?
Yes. The "Calculate Age On" field can be set to any date — past or future. This lets you know your age at any point in time, useful for legal or historical purposes.