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The VBA TimeValue function is used to convert a time string into a decimal value that can be used in calculations. This function is helpful when working with time data in VBA, as it allows for easy manipulation and comparison of time values.

## VBA TimeValue Function – Purpose, Syntax and Arguments

### Purpose:

The TimeValue function is used to convert time strings into decimal values, which can then be used in mathematical operations. This function is commonly used in automation tasks, where time data needs to be manipulated and compared in VBA code.

### Syntax:

The syntax for the TimeValue function is as follows:

`TimeValue(time_string)`

The ‘time_string’ argument can be any valid time format, such as “HH:MM:SS” or “HH:MM”. The function will return a decimal value based on the time string provided.

### Arguments:

• time_string: The argument for the TimeValue function is a time string that needs to be converted into a decimal value. This can be in any valid time format, such as “HH:MM:SS” or “HH:MM”.

### Example:

Let’s say we have a time string “10:30:45” representing 10 hours, 30 minutes, and 45 seconds. We can use the TimeValue function to convert this time string into a decimal value. The code and result would be as follows:

```Dim time As String
time = "10:30:45"
MsgBox TimeValue(time)
```

The result would be the decimal value 0.4375, which represents 10 hours and 30.75 minutes.

### Remarks:

• The decimal value returned by the TimeValue function is based on the 24-hour clock. For example, 12pm would be represented as 0.5, and 12am would be represented as 0.
• This function can also handle time values that include seconds, such as “HH:MM:SS”. The returned decimal value will include the seconds as well.

### Important Notes:

• The TimeValue function is only available in VBA. It is not a built-in function in Excel or any other Microsoft Office application.
• The TimeValue function may return a different result based on the regional settings of the computer. It is recommended to test the function and adjust the code accordingly if needed.

## Understanding VBA TimeValue Function with Examples

### Example 1: Using TimeValue function to convert a string into a time value

Description: The TimeValue function is used to convert a given string into a time value. It takes a string representation of time in the format “hh:mm:ss”, and converts it into a time value that can be easily manipulated and used in calculations.

```Sub ConvertStringToTime()
Dim timeStr As String
Dim timeVal As Date
timeStr = "09:30:00" 'string representation of time
timeVal = TimeValue(timeStr) 'convert to time value
MsgBox "Converted time value is: " & timeVal
End Sub
```
1. Declare two variables, timeStr as String type and timeVal as Date type.
2. Assign a string representation of time to the timeStr variable.
3. Use the TimeValue function to convert the string into a time value and assign it to the timeVal variable.
4. Display the converted time value using the MsgBox function.

Explanation: In this example, we have a string variable timeStr with the value “09:30:00”. We use the TimeValue function to convert this string into a time value and store it in the timeVal variable. The timeVal variable now holds the value 9:30:00 AM as a time value. This time value can be used in calculations and other operations, unlike the string representation of time which cannot be used directly in such operations.

### Example 2: Formatting a time value using TimeValue function

Description: The TimeValue function can also be used to format a given time value in a specific format. This is especially useful when working with multiple time zones, where the format of time may vary.

```Sub FormatTimeValue()
Dim timeVal As Date
Dim formattedTime As String
timeVal = Now 'current system time
formattedTime = TimeValue(timeVal) 'format the time value to default format
MsgBox "Formatted time value is: " & formattedTime
End Sub
```
1. Declare two variables, timeVal as Date type and formattedTime as String type.
2. Use the Now function to get the current system time and assign it to the timeVal variable.
3. Use the TimeValue function to format the time value in the default format and assign it to the formattedTime variable.
4. Display the formatted time value using the MsgBox function.

Explanation: In this example, we have used the Now function to get the current system time and stored it in the timeVal variable. This time value is then formatted using the TimeValue function and stored in the formattedTime variable. The formattedTime variable now holds the time value in the default format, which can be different based on the regional settings of the computer. This allows us to display the time value in a consistent format, regardless of the computer’s regional settings.

### Example 3: Using the TimeValue function in conditional statements

Description: The TimeValue function can also be used in conditional statements to compare time values or manipulate them based on certain conditions.

```Sub ConditionalTimeValue()
Dim startTime As Date
Dim endTime As Date
Dim duration As Date
startTime = #9:00:00 AM# 'start time
endTime = #5:00:00 PM# 'end time
If TimeValue(startTime) > TimeValue(endTime) Then 'compare time values
duration = startTime - endTime 'calculate difference
MsgBox "The duration of the event is " & duration 'display duration
End If
End Sub
```
1. Declare three variables, startTime, endTime, and duration as Date type.
2. Assign a start time and an end time to the startTime and endTime variables, respectively.
3. Use the TimeValue function to compare the time values of startTime and endTime.
4. If the start time is greater than the end time, calculate the duration of the event by subtracting the end time from the start time.
5. Display the duration using the MsgBox function.

Explanation: In this example, we have used the TimeValue function in an if statement to compare the time values of the start and end time. If the start time is greater than the end time, the code inside the if statement is executed. Here, we have calculated the duration of the event by subtracting the end time from the start time. The duration is then displayed using the MsgBox function.

### Conclusion:

The TimeValue function is a useful tool when working with time values in VBA. It allows us to easily convert a string representation of time into a time value that can be used in calculations and other operations. Additionally, it can also be used to format time values and in conditional statements. Understanding and utilizing the TimeValue function can greatly improve our efficiency in working with time values in VBA.

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Categories: VBA FunctionsLast Updated: September 30, 2023