Table of Contents

## Introduction

Calculating the duration between two given times is a common task that many people need to accomplish. Whether you’re trying to determine the hours worked for timesheets or simply curious about the duration of a specific time period, this article will guide you through the process.

## How to Calculate Hours Between Times

To calculate the difference in hours and minutes between two times, you can use a simple online tool that takes into account the beginning and end of the time period you’re interested in. Once you enter these two times, click the “Calculate difference” button, and the tool will provide you with the difference in both full hours and minutes. If the first time you enter is later in the day than the second time, the calculator will assume the first time is for today and the second time is for tomorrow. For example, if you input a start time of 6PM and an end time of 8AM, the tool will calculate the difference in hours, minutes, and seconds from 6PM today to 8AM tomorrow, resulting in a total of 14 hours.

## Working Hours with Lunch Break Excluded

If you’re using our calculator to determine your working hours, you can also account for lunch breaks or other types of shift breaks. Simply subtract the break duration from the total hours between your start and end times. For instance, if you have a work day from 7:30AM to 4:30PM with a 30-minute lunch break, your total working hours would be 8.5 (9 hours minus 30 minutes). If you have multiple breaks, add up the total time off and enter it in the designated field.

## Number of Hours in Different Time Periods

While calculating hours between two times within a single day is a common scenario, you might also be interested in determining hours across longer time periods such as weeks, months, or years. In such cases, the calculation is based on the assumption that a day consists of 24 hours. To find the total number of hours in a year, multiply 365 by 24, resulting in an average of 8,766 hours. However, note that a leap year has 8,784 hours due to its additional day. Similarly, a month can have varying numbers of hours depending on the month itself. On average, a month consists of 730.5 hours, but each month has a specific number of hours based on its respective number of days. Lastly, a week always has exactly 168 hours, as each day contains 24 hours.

## American vs. European Time

The way time is expressed and written differs between Americans and Europeans. In America, civilians commonly use the 12-hour clock system, distinguishing between AM and PM to indicate the respective half of the day. In contrast, Europeans adopt the 24-hour clock system, which starts at 00:00 (midnight) and ends at 23:59. However, it’s worth noting that Europeans sometimes use the 12-hour clock system as well, saying “15:00 o’clock” instead of “3 PM.” This can be confusing for visitors from overseas who might also encounter the term “3 in the afternoon.” For those unfamiliar with the 24-hour clock system, the conversion is relatively simple. For times within the 12-hour range, there is no change. For times after 12 PM, simply subtract 12 and add “PM” after the result. For example, if you are meeting a colleague at 17:30, subtracting 12 gives you 5:30 PM. On the other hand, if you need to write 2 PM, add 12 to get 14 PM.

In conclusion, calculating the hours between two times requires a basic understanding of time formats and the ability to distinguish between AM and PM or convert to the 24-hour clock system. By utilizing the methods explained in this article, you can accurately determine the duration between any given times. For further information and additional calculations, visit 5 WS.