Age Calculator
Calculate exact age from a birth date.
That's 9,707 days in total.
About Age Calculator
Calculate an exact age or the precise span between two dates in years, months, and days. Instead of counting on a calendar, enter a birth date, or any start and end date, and this calculator returns the exact elapsed time along with totals in days, weeks, and months. It is useful for filling out forms, checking eligibility cutoffs, planning milestones and anniversaries, or simply satisfying curiosity about how much time has passed. The math accounts for leap years and varying month lengths so the result is accurate, and it all runs in your browser without collecting or storing any of the dates you enter.
How to use this tool
- 1Select your date of birth.
- 2Optionally choose a different target date.
- 3See your exact age in years, months, and days.
Frequently asked questions
How is age calculated?
The tool computes the exact difference between the two dates, accounting for varying month lengths and leap years.
Can I calculate age at a future date?
Yes, change the target date to any date to see the age at that point.