Date Difference Calculator

Calculate the exact difference between two dates. Get days, hours, minutes, and seconds. Simple, fast, and free.

Difference:

Select start and end dates to calculate the difference.

Date Difference Calculator

Calculate the exact difference between two dates and times. Get the result in days, hours, minutes, and seconds. Useful for project timelines, age calculations, or countdowns.

How to Use

  1. Select the start date and time
  2. Select the end date and time
  3. View the difference in days, hours, minutes, and seconds
  4. Use "End = Now" to calculate time since a past date

Pro Tips

  • Use "Swap" to reverse start and end
  • Use "End = Now" for "time since" calculations

Related Tools

🕐

Timestamp to Date

Convert UNIX timestamps to human-readable dates instantly. Free online tool for developers to convert epoch time to readable date format. Supports multiple timezones.

📅

Date to Timestamp

Convert human-readable dates to UNIX timestamps instantly. Free online tool for developers to convert dates to epoch time. Supports multiple date formats.

🌍

Timezone Converter

Convert date and time between timezones. UTC, PST, EST, and more. Free online timezone converter.

⏱️

Duration Calculator

Convert seconds to human-readable duration (1h 30m) and vice versa. Free online duration calculator.