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Enter the start and end time, optionally add a break duration, and click on "CALCULATE" to find the total hours worked.
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This Hours Calculator helps you find the total working hours between a start and end time. It also allows you to enter an optional break time to calculate the net hours worked. Whether you're tracking work hours, managing study time, or planning your daily schedule, this tool is designed with a simple and user-friendly interface. Just enter the start and end time, and you'll get the total hours within seconds.
Suppose you've worked from 9:45 AM to 4:25 PM and want to calculate what the total number of hours was. In this case, you can use the hour calculator to determine the hours and minutes between two times. But the question is, how to use it? Let’s start!
⁍ Enter the Start Time
Put the value of the start time or select it by the time picker (e.g, 09:45 AM)
⁍ Enter the End Time
Put the time you finished working (e.g., 04:25 PM)
⁍ Enter Break Time (in minutes)
If you have a break during your working hours, then enter in minutes
⁍ Click the "Calculate" Button
Click on the “CALCULATE” button to get the total number of hours worked
Finding the number of hours between two times is easy once you understand it. Whether you're logging work hours, planning an event, or organizing your day, simply find the time difference between your start and end times. Let's find out how to get the difference between these times:
John starts his work at 9:00 AM and finishes at 5:30 PM. He takes a 30-minute lunch break during the day. How many hours does he work?
Given:
To Find:
Total Time from 9:00 AM to 5:30 PM?
Solution:
Time Difference = End Time - Start Time
5:30 PM – 9:00 AM = 8 hrs 30 min
Deduct the break time from the total time
8 hrs 30 min – 30 min break = 8 hrs
✅ Total Work Hours: 8 hours
| Start Time | End Time | Total Hours |
|---|---|---|
| 08:00 AM | 12:00 PM | 4 hours |
| 09:00 AM | 05:00 PM | 8 hours |
| 01:00 PM | 06:00 PM | 5 hours |
| 10:30 AM | 04:30 PM | 6 hours |
| 07:00 AM | 03:00 PM | 8 hours |
| 06:00 PM | 11:00 PM | 5 hours |
The way of telling time is done differently around the world. There are two common formats: the 12-hour clock (used in the US and other countries) and the 24-hour clock (preferred across most of Europe and in many global industries).
In the 12-hour format, the day is split into two cycles: AM and PM. For example, 2:00 AM is early in the morning, while 2:00 PM is in the afternoon. To avoid confusion, especially with times like 12:00 AM or PM, it is always added.
The 24-hour format runs from 00:00 (midnight) to 23:59 (one minute before the next midnight), eliminating the need for AM/PM. So, 2:00 PM becomes 14:00, and 6:30 PM becomes 18:30. It’s commonly used in transportation schedules, healthcare, and other fields where precision matters.
If you're new to the 24-hour format, converting is easy:
This hours calculator becomes useful when working across these formats. It handles conversions and differences instantly, so you can focus on your schedule, not the math.
| Description | Hours |
|---|---|
| Hours in a day | 24 |
| Hours in a week | 168 |
| Hours in a month | 672 for a 28-day month 696 for a 29-day month 720 for a 30-day month 744 for a 31-day month |
| Hours in a year | 8,760 for a 365-day year 8,784 for a 366-day year 8,766 on average |
| Hours in a decade | 87,648 for a 2-leap-year decade 87,672 for a 3-leap-year decade |
| Hours in a century | 876,600 |
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