About Age Calculator
Free online age calculator. Calculate your exact age in years, months, days, weeks, and total days from your date of birth. Supports calculating age between any two custom dates. Also shows the number of days remaining until your next birthday. Instant results, no sign-up required.
How to Use Age Calculator
- Enter your date of birth in the date field.
- The 'Age as of' field defaults to today's date — change it to calculate age between any two dates.
- Your exact age in years, months, and days appears instantly.
- Scroll down to see additional stats: total days lived, total weeks, and days to your next birthday.
Frequently Asked Questions
- How accurate is this age calculator?
- This calculator accounts for leap years and varying month lengths, giving you the most accurate age calculation down to the exact day.
- Can I calculate age between two custom dates?
- Yes. Change the 'Age as of' field to any past or future date to calculate the age or time span between any two dates.
- How many days until my next birthday?
- The calculator shows 'Days to Birthday' which counts the exact number of days from today (or your selected 'as of' date) to the next occurrence of your birthday.
- Can I use this to calculate a child's age?
- Yes. Enter the child's date of birth and the result will show their exact age, including months and days — useful for tracking developmental milestones.