What Is the Years Calculator?

The Years Calculator is a free online tool designed to calculate the total number of years between any two dates. Whether you're determining someone's age, calculating the duration of a project, or marking time between two major events, this calculator provides fast, precise, and detailed results.

All you need to do is enter a start and end date and the calculator will instantly display the result in years, as well as break it down into months, days, hours, minutes, seconds, and even weeks.

For more detailed breakdowns between two time points, you can also pair it with the Time Duration Calculator, which offers a full view across all time units.

You can also set up a Countdown Timer to track exactly how much time remains until a specific anniversary or target date.

Key Features of the Years Calculator

Accurate Year Calculation: Calculates the total number of years, including fractional values, between two selected dates.
Detailed Time Breakdown: See the equivalent time in months, days, hours, minutes, seconds, and weeks.
Date Picker Integration: Select any start and end date using the interactive calendar.
Leap Year Support: Automatically adjusts for leap years and differing month lengths.
Multi-Unit Display: Ideal for those needing breakdowns for financial, legal, academic, or medical timelines.
Free and Instant: No downloads or logins required just open and calculate.
Cross-Device Friendly: Works seamlessly on desktops, tablets, and smartphones.

Need to plan ahead instead of look back? Use the Time From Now Calculator to find out what date it will be after a set number of years or months from today.

Example

Let’s say you want to know the time span between May 28, 2025, and July 13, 2029.

The tool gives you:

Result: 4 years

= 4.12594 years

= 49.51129 months

= 1,507 days

= 36,168 hours

= 2,170,080 minutes

= 130,204,800 seconds

= 4 years, 1 month, 15 days

= 215 weeks, 1 day

This level of detail makes the tool especially useful for long-term planning and milestone calculations.

When to Use the Years Calculator

This tool is perfect for:

Age Calculation: Quickly find out someone’s age based on birth and current date.
Project Duration Planning: Accurately assess the span of multi-year projects.
Anniversary Tracking: Know exactly how long a couple has been married.
Educational Timelines: Determine how long it’s been since graduation.
Legal or Financial Records: Calculate years for pensions, investments, or contracts.

If you work with time in any capacity, this tool is a perfect companion for you.

The Years Calculator is your go-to solution for precise time measurement between two dates. Whether you're looking back to track progress or planning years ahead, this tool delivers accurate, instant results in every unit of time.