Exchange 2010/2013 - Get-MailboxStatistics TotalItemSize in Numeric Format

To get a list of all mailboxes and their sizes, the following command produces this information.

Get-Mailbox | Get-MailboxStatistics |  select-object DisplayName,TotalItemSize

However the data outputted by this command is not in a format which can be used with script, it is not numeric as shown in the following screenshot.


To get the data for TotalItemSize just as a number such as KB, MB, GB etc, use the following commands:

{$_.TotalItemSize.Value.ToKB()}
{$_.TotalItemSize.Value.ToMB()}
{$_.TotalItemSize.Value.ToGB()}

For example:

Get-Mailbox | Get-MailboxStatistics |  select-object DisplayName, {$_.TotalItemSize.Value.ToMB()}

This will ensure the data returned is in a format which you can use for scripting.