Add time Tutorial

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Objectifs :

Learn how to add time in Excel, format time correctly, and use formulas to calculate total time for tasks.

Chapitres :

Introduction to Adding Time in Excel
In Excel, you can add time just like you add other types of numbers. This functionality is particularly useful when you want to calculate the total time taken to complete tasks in a project.
Using the AutoSum Feature
The best way to add time in Excel is by using the AutoSum button located on the Home tab. To use it, click the AutoSum button once to preview what it will add. If it shows the correct range, click it again to get the total time for the selected tasks.
Creating Formulas for Time Addition
You can also create a formula to add time. To start a formula, always use an equal sign. For example, click on Cell D2, type the formula, click on Cell D3, and press Enter. If you have 12 hours and 45 minutes in one cell and 15 hours and 30 minutes in another, the formula will calculate the total time.
Understanding Time Formatting in Excel
Excel can display time in various formats, such as hours and minutes, hours, minutes, and seconds, or even in a 24-hour format. If the total time exceeds 24 hours, you need to format the cell correctly. To do this, right-click the cell, select 'Format Cells', and under 'Category', click 'Custom'. In the 'Type' field, enter '[h]:mm'. The square brackets allow Excel to display time exceeding 24 hours.
Using the TIME Function
You can also add a specific unit of time using the TIME function. For instance, to add one and a half hours to a time value, start with an equal sign, click on the cell containing the time (e.g., 10 a.m.), then type a plus sign followed by the TIME function. For example, 'TIME(1, 30, 0)' adds 1 hour and 30 minutes. Press Enter to see the calculated time, which in this case would be 11:30 a.m.
Conclusion
Understanding how to add and format time in Excel is essential for effective project management. By using features like AutoSum and the TIME function, you can easily calculate and display total time accurately, ensuring that your project timelines are well managed.

FAQ :

How do I add time in Excel?

You can add time in Excel just like you add other numbers. Use the AutoSum button to quickly calculate totals or create a formula starting with an equal sign to add specific cells.

What is the AutoSum button?

The AutoSum button is a feature in Excel that allows you to quickly sum a range of numbers. It can be found on the Home tab and is used to calculate totals efficiently.

How do I format a cell to display time correctly?

To format a cell for time, right-click the cell, select 'Format Cells', then choose 'Custom' under the Category. In the type field, enter '[h]:mm' to allow for totals exceeding 24 hours.

What does the square bracket in time formatting mean?

The square brackets in time formatting tell Excel to display hours that exceed 24. For example, '[h]:mm' will show total hours correctly even if they are greater than 24.

How can I add a specific amount of time to a time value in Excel?

You can add a specific amount of time by using the Time function. Start with an equal sign, reference the cell with the time, and then use the Time function to specify hours, minutes, and seconds.

Quelques cas d'usages :

Project Time Tracking

Use Excel to track the total time spent on project tasks. By adding time values using AutoSum or formulas, project managers can easily monitor progress and ensure deadlines are met.

Employee Time Management

HR departments can utilize Excel to calculate total hours worked by employees, including overtime. By formatting cells to exceed 24 hours, they can accurately report on employee hours.

Event Planning

Event planners can use Excel to manage the timing of various activities. By adding time values for each task, they can create a detailed schedule that ensures all events run smoothly.

Budgeting for Time-Based Projects

In financial planning, Excel can be used to calculate costs associated with time-based projects. By adding time values and correlating them with hourly rates, businesses can forecast expenses accurately.

Scheduling and Resource Allocation

Project managers can apply time calculations in Excel to allocate resources effectively. By summing up task durations, they can identify potential bottlenecks and adjust schedules accordingly.

Glossaire :

AutoSum

A feature in Excel that automatically adds a range of numbers. It can be found on the Home tab and is used to quickly calculate totals.

Formula

An equation that performs calculations on values in a worksheet. In Excel, formulas always start with an equal sign (=).

Cell

The intersection of a row and a column in an Excel worksheet where data can be entered. Each cell is identified by its column letter and row number (e.g., D2).

Format Cells

A feature in Excel that allows users to change the appearance of cells, including number formats, font styles, and borders.

Custom Format

A specific way to display data in Excel that is not available in the standard format options. It allows for personalized formatting, such as displaying time in hours exceeding 24.

Time Function

A function in Excel that returns a time value based on the specified hours, minutes, and seconds. It is used to perform calculations involving time.

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For example, you might do this if you want to know how

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long it took to complete a project's tasks.

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The best way to do this is to use the AutoSum button on the Home tab.

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I click it once to see what it's going to add.

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This is what I want.

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So I click it again and get the total time for the tasks.

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You could use AutoSum again to add these columns tasks

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or a formula to add these two cells.

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To start a formula, you always use an equal sign.

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Click Cell D2, type +,

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click cell D3 and press Enter.

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Hum. 12 hours and 45 minutes + 15 hours and 30 minutes

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isn't 4 hours and 15 minutes.

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I know the formula is correct, so it must be how cell D4

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is configured to display time.

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In this example, the total was greater than 24 hours.

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Excel can display time in many different ways

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such as hours and minutes or hours, minutes and seconds,

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AM-PM or a 24-hour clock

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or a number that's greater than 24 hours as is needed in this example.

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To format the cell, right click it and click Format cells.

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Under Category, click Custom.

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In the type field, type left square bracket,

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h, right square bracket, colon

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and then mm.

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The square brackets tell Excel to exceed 24 hours.

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The h is for hours and the mm is for minutes.

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See the course summary at the end of this course

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for more information about formatting time

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and now we just click OK and the total time is displayed correctly.

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You can use the square brackets even if the time won't exceed 24 hours.

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If you're not sure if a total will exceed 24 hours, it's best to use them.

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You can also add a unit of time such as one and a half hour

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to a time of day such as 10 a.m.

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by using the time function.

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Type in equal sign, then click A7 which contains

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the time of day 10 a.m.

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then type a plus sign, time,

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left parenthesis, 1 for the number of hours we want to add,

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comma, 30 for the minutes we want to add,

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comma, 0 for the seconds,

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a closing parenthesis and press Enter.

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And we have our calculated time of 11:30 a.m.

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