Time Duration Calculator

The Time Duration Calculator instantly finds the time difference between two dates and times. Get results in years, months, days, hours, and more.

Options
Show years/months
Show days
Use verbose output

How to Use:

This tool tells you the exact time span between two date-time entries whether that’s two minutes apart or two decades. Start by entering a Start Date & Time and an End Date & Time. It defaults to “now” for both, but you can select anything from the past or future.

Once both are filled in, the tool calculates the duration immediately. You’ll see a breakdown that includes:

  • Years and months great for long spans
  • Days, hours, minutes, and seconds if you want total precision
  • A Verbose Mode toggle that makes everything more readable (like “Friday, June 28, 2025 at 8:00 AM”)

The output flashes to confirm it’s updated each time. If the end date is earlier than the start, it’ll show an error instead.

You can Copy the result, Export it to a text file, or hit Clear All to reset everything. It all runs instantly and offline in your browser no data is stored or sent.

What the Time Duration Calculator can do:

This tool makes it easy to find out how long something took, how far apart two events were, or just do clean, human-readable time math. Whether you’re comparing project milestones, measuring age gaps, or checking time since a change this gives you the full breakdown in one click.

It’s flexible, fast, and precise. The layout stays clean, and you get control over exactly what details you want to show or hide. It’s ready for everything from high-level reports to casual curiosity.

Example:

Start: Monday, January 1, 2024 at 08:00 AM
End: Friday, June 28, 2025 at 10:30 AM

Years: 1, Months: 5
Days: 544, Hours: 2, Minutes: 30, Seconds: 0

Common Use Cases:

Use it to calculate project durations, compare work periods, check time between events, or reflect on how long something took. It’s great for planners, managers, students, writers anyone who needs to know “how long between then and now.”

Useful Tools & Suggestions:

Once you’ve got your total duration, the Time Calculator is a solid next move for tweaking it whether you’re adding, subtracting, or scaling. And if you want to see how far that stretch takes you into the future, the Time From Now Calculator ties it all together.

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