1-- Right Click on the table and then go to the Properties. Then Click on Storage Tab and you will be able to see the size of Table
2- OR we can use sp_spaceused system Stored Procedure to find the size of a SQL Server table.
EXEC sp_spaceused 'TableName'
Fig 2- Find the Size of Table by using sp_spaceused Stored Procedure
sp_spaceused Stored Procedure return the size of a table in KB, to get the Size in MB, we can divide with 1024.