Age / Date Difference Calculator
Calculate the exact age difference between two dates in years, months, and days. Useful for birthdays, couples, anniversaries, and more.
How This Age Difference Calculator Works
This calculator finds the exact difference between any two dates. It works for birthdays, relationships, siblings, anniversaries, or any event where you want to know the time gap. The tool breaks the difference into years, months, days, and also shows the total number of days and months.
The logic is simple: the earlier date is subtracted from the later date to calculate an accurate difference. It automatically handles leap years, month lengths, and date rollovers.
Everything is calculated privately in your browser. No data is stored or sent anywhere, making this a fast and secure tool.
Frequently Asked Questions
What can I use this calculator for?
You can use it for birthdays, couples, siblings, anniversaries, employment duration, or any time-gap measurement.
Does the tool handle leap years correctly?
Yes. The calculator handles leap years, month lengths, and leap-day adjustments automatically.
Is this tool accurate?
Yes. The calculation uses actual date differences from the calendar, making it precise for any pair of dates.
Is my information saved?
No. All inputs stay on your device. Nothing is stored or shared.