Age calculations are useful for forms, deadlines, and just curiosity. If you need the exact number of years, months, and days, a calculator saves time.
Calculate age (step by step)
- Open Age Calculator.
- Enter your birth date.
- Optionally enter a target date to calculate age on that day.
- Copy the result or share it.
Birthday countdown
Use the countdown when you need:
- days until your next birthday
- a reminder for planning a party or trip
- a quick check for age eligibility dates
Fun extras
Some tools also show age on other planets. It is a fun way to see how different year lengths change the number.
Related tools
- Date Difference Calculator: days and weeks between two dates