Time Calculator
Free Time Calculator: Accurately add or subtract time durations in a HH:MM:SS format, or calculate the duration between two times.
Inputs
Enter the required values to calculate.
Result
The calculated result will appear here.
More Information
Understanding the Time Calculator
This advanced tool is a dual-mode calculator designed for all common time-based calculations. You can switch between "Add/Subtract Time" and "Time Between" modes using the tabs.
Add/Subtract Time Mode
This mode is perfect for accurately adding or subtracting multiple time durations. It's useful for tasks like summing up work hours from a timesheet, calculating total flight times with layovers, or analyzing data from video footage or experiments.
- Enter your first time value in the hours (H), minutes (M), and seconds (S) fields.
- To add or subtract more durations, click the "Add another time value" button.
- For each new row, select the operation (+ Add or - Sub) you wish to perform.
- The calculator supports decimal values in any field for high-precision calculations (e.g., 1.5 hours, or 45.75 seconds).
Time Between Mode
This mode calculates the exact duration between two specific points in time (e.g., 9:00 AM to 5:30 PM). It's ideal for calculating work hours, event durations, or elapsed time. The calculator automatically handles AM/PM and time that spans across midnight.
Interpreting the Result
For both modes, the final result is displayed in a standard HH:MM:SS.ss format (Hours:Minutes:Seconds.hundredths-of-a-second).
For calculations involving calendar dates, our Date Calculator would be more suitable.