Time Card Calculator 24 Hour Time

This time card calculator helps you track total hours worked from time card entries in 24-hour format. Simply input your start and end times for each shift, and the calculator will compute the total hours worked.

How to Use the Time Card Calculator

Using the time card calculator is straightforward:

Enter the start time of your shift in 24-hour format (e.g., 09:00 for 9:00 AM).
Enter the end time of your shift in 24-hour format (e.g., 17:00 for 5:00 PM).
Click the "Calculate" button to compute the hours worked.
Review the result and use the "Reset" button to clear the form for new calculations.

The calculator handles overnight shifts automatically by calculating the time difference correctly across midnight.

Formula Used

The time card calculator uses the following formula to calculate hours worked:

If end time > start time:

Hours Worked = End Time - Start Time

If end time < start time (overnight shift):

Hours Worked = (24:00 - Start Time) + End Time

This formula ensures accurate calculation of hours worked regardless of whether the shift crosses midnight.

Worked Example

Let's calculate hours worked for a shift from 22:00 to 06:00 the next day:

Start Time: 22:00
End Time: 06:00
Since 06:00 is less than 22:00, it's an overnight shift.
Calculate hours before midnight: 24:00 - 22:00 = 2 hours
Add hours after midnight: 06:00 - 00:00 = 6 hours
Total Hours Worked: 2 + 6 = 8 hours

This example demonstrates how the calculator handles overnight shifts accurately.

FAQ

Can I use this calculator for multiple shifts?: Yes, you can calculate hours for multiple shifts by entering each shift's start and end times separately and summing the results.
Does the calculator handle breaks automatically?: No, the calculator only calculates the time between start and end times. You'll need to manually subtract break times if required.
What if I enter an invalid time format?: The calculator will display an error message if you enter an invalid time format. Please ensure times are in 24-hour format (HH:MM).
Is the result accurate for overtime calculations?: The calculator provides the total hours worked, which you can use to determine overtime. However, it doesn't automatically calculate overtime pay.