Years Between Dates Calculator

Calculate the number of years between two dates.

About this tool

Enter two dates to calculate years between them - ideal for age, anniversaries, and service years....

Result

Enter values to see the result.

Years Between Dates Calculator - Age & Anniversary Calculator

Calculate the exact number of years between two dates for age calculations, anniversary tracking, and service year determination. Accurate, instant, and handles all leap year scenarios perfectly.

How to Calculate Years Between Dates

1

Enter Earlier Date

Select the starting date, such as a birth date, hire date, or anniversary start date. This serves as your reference point.

2

Enter Later Date

Choose the ending date, typically today's date for current age or a future date for planning purposes.

3

View Years Count

Instantly see the precise number of years between the two dates, calculated with leap year accuracy.

4

Track Milestones

Use the result for age verification, anniversary celebrations, service year tracking, or any year-based milestone calculations.

Frequently Asked Questions

How do I calculate someone's exact age in years?

Enter the person's birth date as the start date and today's date (or any reference date) as the end date. The calculator will show their exact age in completed years.

Does this calculator show years and months together?

This calculator focuses on complete years. For a more detailed breakdown including months and days, you can complement this with our Months Between Dates calculator.

Can I calculate service years for employment?

Absolutely! Enter the employment start date and either today's date or a termination date to calculate total service years. This is commonly used for benefits calculation and recognition programs.

How does this calculator handle leap years?

The calculator automatically accounts for all leap years in the date range, ensuring accurate year calculations regardless of how many leap years fall between your selected dates.

Can I use this for historical period analysis?

Yes! The calculator works for any date range, whether you're calculating years between historical events, determining the age of buildings, or analyzing time periods in research.

Is this accurate for calculating retirement eligibility?

Yes, many people use this to calculate years until retirement or years of service for pension eligibility. Simply enter your start date and target retirement date.

Trusted for Important Milestones

Precise calculations for life's significant moments.

Precise Age Calculation
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