![]() You can use the VBA OnTime function also to schedule code execution after a specific duration of time. Timeout = TimeValue("21:50:00") 'Set alarm for 21:50 PMĬall MsgBox("The time is " & Format(Now(), "HH:MM")) To do this we use the Excel VBA OnTime procedure: Remember that the VBA Sleep function is not a native VBA function and needs to be declared.Ĭall Application.Wait( DateAdd("s", 1, Now) )Īnother VBA Timer scenario is scheduling procedures to run at a specific time or after a specific time interval like an alarm clock. In case you don’t want to measure time elapsed and instead set an interval or delay between code execution you either use the VBA Sleep or VBA Wait procedures like below. 'Result for 10 minutes and 1 second: 00:10:01 The above is very useful if you want to measure time elapsed in Seconds, if you want to calculate time elapsed in Hours, Minutes and Seconds you can simply use the VBA Now function with text formatting using VBA Format instead:ĭebug.Print Format(currTime - Now(), "HH:MM:SS") VBA Timer with Hours, Minutes and Seconds StartTime = Timer 'Get current time in seconds The most simple example of a VBA Timer can be made using the VBA Timer function: On the otherhand a practical example can be a VBA Stopwatch which can be useful to measure time elapsed directly in a Excel spreadsheet. Setting timers can be extremly useful if you want to run code as specific time intervals. RecalculateRange ThisWorkbook.Worksheets("HOME").In this post we will explore the various ways we can set a Timer in Excel VBA as well as how to build your own VBA Stopwatch. To do this, you can paste the following into the ThisWorkbook code module: Private Sub Workbook_Open() Starting the updating automatically when the workbook is opened can also be done in the ThisWorkbook code module, by leveraging the workbook Open event. Private Sub Workbook_BeforeClose(Cancel As Boolean) To do this, you have to paste the following code into the ThisWorkbook code module: Option Explicit This can be done automaticaly by leveraging the workbook BeforeClose event. Since Application.OnTime can reopen the workbook if it was closed, we have to stop all the scheduled range updates before the workbook is closed. You can also stop updating all of them at once by calling RecalculateRange with the optional parameter StopAll = True as follows: RecalculateRange StopAll:=True You can stop updating them individually aswell be calling RecalculateRange with the same parameters you first called RecalculateRange including the parameter schedule:=False. You can also call RecalculateRange multiple times with different ranges and different update rates. Tasks.Add Item:=VBA.Array(macroName, nextExec), Key:=macroNameĪpplication.OnTime tasks(macroName)(1), macroName,, False NextExec = DateAdd("s", refreshTimeSec, Now()) If wasScheduled Then tasks.Remove macroName On Error Resume Next: tasks macroName: wasScheduled = (err.Number = 0)Īpplication.Range(Replace(Address, "''", "'")).Calculate ![]() MacroName = "'RecalculateRange, " & Replace(refreshTimeSec, ",", ".") _ If Not Range Is Nothing Then Address = Range.Address(external:=True) If tasks Is Nothing Then Set tasks = New CollectionĪpplication.OnTime task(1), task(0),, False: tasks.Remove task(0) Static tasks As Collection: If refreshTimeSec < 1 Then refreshTimeSec = 1# Optional ByVal stopAll As Boolean = False, _ĭim nextExec As Double, macroName As String, wasScheduled As Boolean, task Optional ByVal schedule As Boolean = True, _ Optional ByVal refreshTimeSec As Double = 1#, _ RecalculateRange ThisWorkbook.Worksheets("HOME").Range("B6:B10"), 1, Falseįor these examples to work, copy this subroutine into any standard module: Public Sub RecalculateRange(Optional ByVal Range As Range = Nothing, _ RecalculateRange ThisWorkbook.Worksheets("HOME").Range("B6:B10"), 1 To stop the updating, call StopUpdatingSpecificRange or StopUpdatingAll. The example sub UpdateSpecificRange in the following code will recalculate the cells B6 to B10 once every second. This answer provides code to recalculate any range at any given time interval by implementing an Application.OnTime loop.
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