Tuesday, September 3, 2013

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:


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.


  1. Thank you, sir. Helped me out a lot.

  2. [PS] C:\>(Get-MailboxStatistics crawforda).totalitemsize
    231.9 MB (243,185,054 bytes)
    [PS] C:\>(Get-MailboxStatistics crawforda).totalitemsize |gm

    TypeName: System.String

    Name MemberType Definition
    ---- ---------- ----------
    Clone Method System.Object Clone()
    CompareTo Method int CompareTo(System.Object value), int CompareTo(string strB)
    Contains Method bool Contains(string value)
    CopyTo Method System.Void CopyTo(int sourceIndex, char[] destination, int destinationIndex,...
    EndsWith Method bool EndsWith(string value), bool EndsWith(string value, System.StringCompari...
    Equals Method bool Equals(System.Object obj), bool Equals(string value), bool Equals(string...
    GetEnumerator Method System.CharEnumerator GetEnumerator()
    GetHashCode Method int GetHashCode()
    GetType Method type GetType()
    GetTypeCode Method System.TypeCode GetTypeCode()
    IndexOf Method int IndexOf(char value), int IndexOf(char value, int startIndex), int IndexOf...
    IndexOfAny Method int IndexOfAny(char[] anyOf), int IndexOfAny(char[] anyOf, int startIndex), i...
    Insert Method string Insert(int startIndex, string value)
    IsNormalized Method bool IsNormalized(), bool IsNormalized(System.Text.NormalizationForm normaliz...
    LastIndexOf Method int LastIndexOf(char value), int LastIndexOf(char value, int startIndex), int...
    LastIndexOfAny Method int LastIndexOfAny(char[] anyOf), int LastIndexOfAny(char[] anyOf, int startI...
    Normalize Method string Normalize(), string Normalize(System.Text.NormalizationForm normalizat...
    PadLeft Method string PadLeft(int totalWidth), string PadLeft(int totalWidth, char paddingChar)
    PadRight Method string PadRight(int totalWidth), string PadRight(int totalWidth, char padding...
    Remove Method string Remove(int startIndex, int count), string Remove(int startIndex)
    Replace Method string Replace(char oldChar, char newChar), string Replace(string oldValue, s...
    Split Method string[] Split(Params char[] separator), string[] Split(char[] separator, int...
    StartsWith Method bool StartsWith(string value), bool StartsWith(string value, System.StringCom...
    Substring Method string Substring(int startIndex), string Substring(int startIndex, int length)
    ToCharArray Method char[] ToCharArray(), char[] ToCharArray(int startIndex, int length)
    ToLower Method string ToLower(), string ToLower(System.Globalization.CultureInfo culture)
    ToLowerInvariant Method string ToLowerInvariant()
    ToString Method string ToString(), string ToString(System.IFormatProvider provider)
    ToUpper Method string ToUpper(), string ToUpper(System.Globalization.CultureInfo culture)
    ToUpperInvariant Method string ToUpperInvariant()
    Trim Method string Trim(Params char[] trimChars), string Trim()
    TrimEnd Method string TrimEnd(Params char[] trimChars)
    TrimStart Method string TrimStart(Params char[] trimChars)
    Chars ParameterizedProperty char Chars(int index) {get;}
    Length Property System.Int32 Length {get;}

    I find no Value property. How can I get to(MB) without value property?

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  4. If your boss (like mine) wants you to get a mailboxsize report you're going to run into trouble sorting. What I did to overcome that is use a regular expression and replace the totalitemsize value to a whole number then convert it later on after it's sorted.

    [string]$MailboxSize = (get-mailboxStatistics $Name).totalItemsize.value
    [int64]$MailboxSize = ($MailboxSize -replace "(^.*?\()|\D")

    Honestly I don't get why micro soft created the display like this for this value. So very annoying.

  5. Can this code be converted into alphanumeric? Where is the source code of this program? android app development