Convert milliseconds

Suppose you have a value in milliseconds, and want to convert it to seconds or minutes for more readable output. In VB.NET the TimeSpan type can be used for this.

With functions like TimeSpan.FromMilliseconds or FromSeconds, we can use .NET to convert these values. The code is built into .NET, so it is well-tested.

Example

We introduce 20 VB.NET functions in the Module here. For each function, we return a Double that is calculated by a TimeSpan shared function.

Tip It might be better to just reuse the internal statements of the functions—just the TimeSpan calls.

Result In the Main function, we test the Functions. We determine that 100 hours equals 6000 minutes, which makes sense.

Module Module1

    Public Function ConvertMillisecondsToDays(milliseconds As Double) As Double
        Return TimeSpan.FromMilliseconds(milliseconds).TotalDays
    End Function

    Public Function ConvertSecondsToDays(seconds As Double) As Double
        Return TimeSpan.FromSeconds(seconds).TotalDays
    End Function

    Public Function ConvertMinutesToDays(minutes As Double) As Double
        Return TimeSpan.FromMinutes(minutes).TotalDays
    End Function

    Public Function ConvertHoursToDays(hours As Double) As Double
        Return TimeSpan.FromHours(hours).TotalDays
    End Function

    Public Function ConvertMillisecondsToHours(milliseconds As Double) As Double
        Return TimeSpan.FromMilliseconds(milliseconds).TotalHours
    End Function

    Public Function ConvertSecondsToHours(seconds As Double) As Double
        Return TimeSpan.FromSeconds(seconds).TotalHours
    End Function

    Public Function ConvertMinutesToHours(minutes As Double) As Double
        Return TimeSpan.FromMinutes(minutes).TotalHours
    End Function

    Public Function ConvertDaysToHours(days As Double) As Double
        Return TimeSpan.FromHours(days).TotalHours
    End Function

    Public Function ConvertMillisecondsToMinutes(milliseconds As Double) As Double
        Return TimeSpan.FromMilliseconds(milliseconds).TotalMinutes
    End Function

    Public Function ConvertSecondsToMinutes(seconds As Double) As Double
        Return TimeSpan.FromSeconds(seconds).TotalMinutes
    End Function

    Public Function ConvertHoursToMinutes(hours As Double) As Double
        Return TimeSpan.FromHours(hours).TotalMinutes
    End Function

    Public Function ConvertDaysToMinutes(days As Double) As Double
        Return TimeSpan.FromDays(days).TotalMinutes
    End Function

    Public Function ConvertMillisecondsToSeconds(milliseconds As Double) As Double
        Return TimeSpan.FromMilliseconds(milliseconds).TotalSeconds
    End Function

    Public Function ConvertMinutesToSeconds(minutes As Double) As Double
        Return TimeSpan.FromMinutes(minutes).TotalSeconds
    End Function

    Public Function ConvertHoursToSeconds(hours As Double) As Double
        Return TimeSpan.FromHours(hours).TotalSeconds
    End Function

    Public Function ConvertDaysToSeconds(days As Double) As Double
        Return TimeSpan.FromDays(days).TotalSeconds
    End Function

    Public Function ConvertSecondsToMilliseconds(seconds As Double) As Double
        Return TimeSpan.FromSeconds(seconds).TotalMilliseconds
    End Function

    Public Function ConvertMinutesToMilliseconds(minutes As Double) As Double
        Return TimeSpan.FromMinutes(minutes).TotalMilliseconds
    End Function

    Public Function ConvertHoursToMilliseconds(hours As Double) As Double
        Return TimeSpan.FromHours(hours).TotalMilliseconds
    End Function

    Public Function ConvertDaysToMilliseconds(days As Double) As Double
        Return TimeSpan.FromDays(days).TotalMilliseconds
    End Function

    Sub Main()

        ' 500000 milliseconds = 0.00578703704 days
        Console.WriteLine(ConvertMillisecondsToDays(500000))

        ' 100 hours = 6000 minutes
        Console.WriteLine(ConvertHoursToMinutes(100))

        ' 10000 days = 240000 hours
        Console.WriteLine(ConvertDaysToHours(10000))

        ' 500 minutes = 8.33333333 hours
        Console.WriteLine(ConvertMinutesToHours(500))

        ' 600000 milliseconds = 600 seconds
        Console.WriteLine(ConvertMillisecondsToSeconds(600000))

    End Sub

End Module0.005787037037037037
6000
10000
8.333333333333334
600

By using properties like TotalMinutes on the TimeSpan type, we can use TimeSpan to perform conversions. This is a convenient, and reliable, approach to these conversions.

A key benefit to these functions is that you do not have to rely on the competence of people posting content to the Internet. The functions are built into .NET, so should be more reliable.