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Free Time Calculator (2026) – Add & Subtract Time Online

Free Time Calculator 2026 to add and subtract hours, minutes and seconds. Calculate time duration, work hours and total time differences instantly.

Calculate Time

Result

0h 0m 0s

📖 How to Use the Time Calculator

  1. Enter the first time value (hours, minutes, seconds)
  2. Select whether to add or subtract
  3. Enter the second time value
  4. Click Calculate to see the result
  5. View the time in multiple formats (12-hour and 24-hour)

✨ Key Features of the Time Calculator

  • Add and subtract time values
  • Support for hours, minutes, and seconds
  • 12-hour and 24-hour format display
  • Handle time overflow automatically
  • Calculate time across midnight

🎯 Benefits of Using the Time Calculator

  • Calculate work hours accurately
  • Plan schedules and timetables
  • Track time spent on tasks
  • Coordinate across time zones
  • Eliminate time calculation errors

Frequently Asked Questions (FAQ)

Can I add more than 24 hours?

Yes, the calculator can handle any time duration and will show results in days, hours, minutes, and seconds if needed.

How do I calculate time across midnight?

Simply enter the start and end times, and the calculator will automatically handle calculations that cross midnight.

Can I use this for time zone conversions?

This calculator is for time arithmetic. For time zone conversions, you would need to add or subtract the hour difference between zones.

Does it support decimal hours?

Yes, you can enter time in decimal format (e.g., 1.5 hours) or in hours:minutes:seconds format.

Related Calculators

Date Calculator
Add or subtract days, months, and years
Time Duration Calculator
Calculate duration between two times
Hours Calculator
Calculate hours worked and overtime