If you don't want to write a script, you can also open the much underused 'Object Explorer Details' in SSMS (Shortcut key F7).

From the Top-Level, open the Tables folder to get a list of all the tables in your database.

You may need to customise the columns to see the Space Used. This can be done by right clicking on the header row and choosing the columns you wish to display.

There's plenty more data like this available in Object Explorer Details.

In SSMS right click on Database, select Reports, Standard Reports, Disk Usage by Top Tables.

The report will give you number of rows and kilobytes used per table.

Take a look at sys.dm_db_partition_stats (http://msdn.microsoft.com/en-us/library/ms187737.aspx).

There are some sample queries at that link and also at http://blogs.msdn.com/b/cindygross/archive/2010/04/02/dmv-series-sys-dm-db-partition-stats.aspx

You can modify to suit your needs i.e. filter in/out non-clustered indexes. Multiply page count by 8 to get size in KB, then divide by 2^10 (=1024) to convert to MB if required.

sp_spaceused (http://msdn.microsoft.com/en-us/library/ms188776.aspx) will also give table size information.

To get table size information I like to use following script

SELECT  sc.name + '.' + t.NAME AS TableName,  
        p.[Rows],  
        ( SUM(a.total_pages) * 8 ) / 1024 AS TotalReservedSpaceMB, -- Number of total pages * 8KB size of each page in SQL Server  
        ( SUM(a.used_pages) * 8 ) / 1024 AS UsedDataSpaceMB,  
        ( SUM(a.data_pages) * 8 ) / 1024 AS FreeUnusedSpaceMB  
FROM    msdb.sys.tables t  
        INNER JOIN msdb.sys.schemas sc ON sc.schema_id = t.schema_id  
        INNER JOIN msdb.sys.indexes i ON t.OBJECT_ID = i.object_id  
        INNER JOIN msdb.sys.partitions p ON i.object_id = p.OBJECT_ID  
                                            AND i.index_id = p.index_id  
        INNER JOIN msdb.sys.allocation_units a ON p.partition_id = a.container_id  
WHERE   t.type_desc = 'USER_TABLE'  
        AND i.index_id <= 1  --- Heap\ CLUSTERED
        AND t.NAME='MYTableName' -- Replace with valid table name
GROUP BY sc.name + '.' + t.NAME,  
        i.[object_id],i.index_id, i.name, p.[Rows]  
ORDER BY ( SUM(a.total_pages) * 8 ) / 1024 DESC  

Go to to database then right click and click on reports then standard reports then disk usage by table. This will give you all the ta les in that database and thier records, data, indexes etc

you can use the following script that calculates the volume for each table and another result set of the total per data base

    SET NOCOUNT ON 
    IF OBJECT_ID('tempdb..#SpaceUsed') IS NOT NULL DROP TABLE #SpaceUsed

    CREATE TABLE #SpaceUsed 
    (
    TableName sysname ,
    [Rows] int ,
    [Reserved] varchar(20),
    [Data] varchar(20),
    [Index_Size] varchar(20),
    [Unused] varchar(20),
    [Reserved_KB] bigint,
    [Data_KB] bigint,
    [Index_Size_KB] bigint,
    [Unused_KB] bigint
    )

    DECLARE @CMD NVARCHAR(MAX) =''
    SELECT @CMD +='EXEC sp_spaceused ' +  ''''+QUOTENAME(TABLE_SCHEMA)+'.'+ QUOTENAME(TABLE_NAME)+''''+';'+CHAR(10)
    FROM INFORMATION_SCHEMA.TABLES 
    --PRINT @CMD

     INSERT INTO #SpaceUsed (TableName ,[Rows] , [Reserved], [Data] , [Index_Size] , [Unused] )
     EXEC sp_executesql @CMD



     UPDATE #SpaceUsed 
     SET [Reserved_KB] = CONVERT(BIGINT,RTRIM(LTRIM(REPLACE([Reserved] , ' KB', '')))),
         [Data_KB] = CONVERT(BIGINT,RTRIM(LTRIM(REPLACE([Data] , ' KB', '')))),
         [Index_Size_KB]= CONVERT(BIGINT,RTRIM(LTRIM(REPLACE([Index_Size] , ' KB', '')))),
         [Unused_KB]= CONVERT(BIGINT,RTRIM(LTRIM(REPLACE([Unused] , ' KB', ''))))


     SELECT TableName, [Rows], Reserved_KB , Data_KB , Index_Size_KB , Unused_KB ,  Data_KB / 1024.0 Data_MB , Data_KB / 1024.0 / 1024.0 Data_GB
     FROM #SpaceUsed
     ORDER BY Data_KB DESC 

     SELECT SUM(Reserved_KB) Reserved_KB , SUM(Data_KB) Data_KB, SUM(Index_Size_KB) Index_Size_KB , SUM(Unused_KB) Unused_KB ,SUM(Data_KB / 1024.0) Data_MB , SUM(Data_KB / 1024.0 / 1024.0) Data_GB
     FROM #SpaceUsed

     DROP TABLE #SpaceUsed