Finding initial size of database datafiles

Hi @amomen-8749
As far as I know, the size you originally provided to the database file is not stored anywhere. I think the "initial size" that you can see when you right-click the database and then click properties and then click file is actually the current size.
Basically, database initial size is just a concept, from a DBA perspective there is no such thing as “initial size" there is only one property visible for a DBA and that is the current size or actual size.
Please refer to this document for more details: SQL Server: Misleading Database Initial Size Label

Best regards,
LiHong

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Hi,

Is there a way to determine the initial size of the data files of databases in MS SQL Server?

Here are some options to get the size of the files of the database

/**************** get database files size ***********/

--> using sys.master_files
use master
GO
SELECT DB_NAME(database_id) AS database_name, 
    type_desc, 
    name AS FileName, 
    size/128.0 AS CurrentSizeMB
FROM sys.master_files
GO

-- Using sys.database_files : connect to the specific database first
USE AdventureWorks2019
GO
SELECT DB_NAME() AS DbName, 
    name AS FileName, 
    type_desc,
    size/128.0 AS CurrentSizeMB,  
    size/128.0 - CAST(FILEPROPERTY(name, 'SpaceUsed') AS INT)/128.0 AS FreeSpaceMB
FROM sys.database_files
WHERE type IN (0,1);
GO

-- Use sp_spaceused
USE AdventureWorks2019;  
GO  
EXEC sp_spaceused;  
GO 

-- using sp_helpdb
EXEC sp_helpdb N'AdventureWorks2019';
GO

-- using sp_databases
EXEC sp_databases 
GO

Is there a way to determine the initial size of the data files of databases in MS SQL Server?

It's nowhere stored.
If you open database properties in SSMS, it show's a column name "initial size", but that's a known bug in SSMS, it's the current size.

Why do you what to know that?