Time Duration Calculator
Time Duration Calculator
Calculate the duration between two times instantly with our easy-to-use online calculator.
Time Duration Calculator
Enter your start & end time
Start Time
End Time
Break Start
Break End
Computed Duration
0
hours
0 hours
0 minutes
How to Calculate the Duration Between Two Times
There are two basic methods to calculate the difference between two times. The easiest method is to use a time calculator to automatically determine the time duration. If you don’t have access to a time duration calculator (or just want to do the math manually), you’ll find instructions on how to manually calculate a time interval below
Key Takeaways:
Calculate how much time has passed by entering a start and end time.
See the total hours and minutes instantly without doing any math.
Track your work hours easily, even if your shift goes past midnight.
Use the Time Duration Calculator for free, no login or download needed.
Decimal Chart
How to Use This Calculator
To use the Worksana Time Duration Calculator, simply enter a start time and end time to generate the result instantly.
The calculator will automatically compute the total time duration in both:
- Hours & minutes format, and
- Decimal hours format
Example:
Start Time: 8:05 AM
End Time: 12:15 PM
Duration = 4 hours 10 minutes
Decimal Format = 4.17 hours
The decimal format is especially useful for payroll calculations and reporting, while the hours-and-minutes format is commonly used for communication and record-keeping.
If you already have a time duration and want to convert it into decimal format, you can use Worksana’s Decimal Hours Calculator for quick and accurate conversion.
Manual Conversion
How to Manually Calculate a Time Interval
Manual time calculations can be time-consuming and prone to errors, so using a tool like Worksana is always recommended. However, if you need to calculate a time interval manually, follow these steps:
Here’s how;
Step 1: Determine the start and end times
Let’s say your start time is 9:30 a.m. and your end time is 2:15 p.m.
Step 2: Convert to 24-hour format
Convert both times into military time:
- 9:30 a.m. → 0930
- 2:15 p.m. → 1415
Step 3: Find the total worked time
Subtract the start time from the end time:
- Hours: 14 – 9 = 5
- Minutes: 15 – 30 = -15
Since minutes are negative, borrow 1 hour (60 minutes):
- Minutes: -15 + 60 = 45
- Hours: 5 – 1 = 4
So, total time worked = 4 hours 45 minutes
Step 4: Subtract break time
Now subtract your break hours from the total time.
For example, if you took a 30-minute break:
- 4 hours 45 minutes – 30 minutes = 4 hours 15 minutes
Frequently Asked Questions
When can an employee waive a meal break in California?
An employee may waive their first meal break if their shift is 6 hours or less. A second meal break may be waived if the shift is 12 hours or less and the first meal break was taken.
How do you calculate time duration in minutes?
Convert both start and end times into minutes, subtract the start time from the end time, and the result will be your total minutes worked.