Time Calculator
Calculate Time Differences in a Snap!
Calculate time differences, add or subtract time, and convert between time formats with our free online time calculator.
Calculate the duration between two times in hours, minutes, and seconds.
Time Difference Results
Add or subtract hours, minutes, and seconds from a specific date and time.
Result
Calculate the duration between two specific dates and times.
Date & Time Difference Results
How to Use the Time Difference Calculator
- Choose Your Mode: Select one of the tabs above: - Time Difference - Calculate the duration between two times. - Add/Subtract Time - Add or subtract hours, minutes, and seconds to a specific date & time. - Date & Time Difference - Find the difference between two complete date-time values.
- Enter Your Inputs: - For Time Difference, select the first and second times with AM/PM. - For Add/Subtract Time, choose a starting date & time and enter the hours, minutes, and seconds to add or subtract. - For Date & Time Difference, select both date & time values to compare.
- Perform the Calculation: Click the corresponding Calculate button (or Add/Subtract buttons for time operations).
- Review the Results: The tool will display: - Total difference in multiple formats (days, hours, minutes, seconds). - New date & time after adding/subtracting. - Exact breakdown for precise calculations.
- Adjust as Needed: Change your inputs and calculate again for instant updated results.
Perfect for tracking durations, adjusting schedules, and managing precise time-based tasks.
Frequently Asked Questions
Use the first calculator tool. Enter hours (1-12), minutes (0-59), seconds (0-59) and select AM/PM for both times, then click "Calculate Difference" to see the duration between them in various units.
Yes, use the second calculator tool. Enter your base date and time, then specify the hours, minutes, and seconds you want to add or subtract.
Our calculator is very accurate, accounting for all days, hours, minutes, and seconds between two points in time, including leap years and daylight saving time changes.
This calculator uses the local time you input. For time zone calculations, you would need to first convert both times to the same time zone before using this tool.
Yes, this is a completely free online tool with no registration required.