sql query to find the table size mssql

1USE [YourDBName] -- replace your dbname
2GO
3SELECT
4s.Name AS SchemaName,
5t.Name AS TableName,
6p.rows AS RowCounts,
7CAST(ROUND((SUM(a.used_pages) / 128.00), 2) AS NUMERIC(36, 2)) AS Used_MB,
8CAST(ROUND((SUM(a.total_pages) - SUM(a.used_pages)) / 128.00, 2) AS NUMERIC(36, 2)) AS Unused_MB,
9CAST(ROUND((SUM(a.total_pages) / 128.00), 2) AS NUMERIC(36, 2)) AS Total_MB
10FROM sys.tables t
11INNER JOIN sys.indexes i ON t.OBJECT_ID = i.object_id
12INNER JOIN sys.partitions p ON i.object_id = p.OBJECT_ID AND i.index_id = p.index_id
13INNER JOIN sys.allocation_units a ON p.partition_id = a.container_id
14INNER JOIN sys.schemas s ON t.schema_id = s.schema_id
15GROUP BY t.Name, s.Name, p.Rows
16ORDER BY s.Name, t.Name
17GO
18