Determining Free Space Per SQL Server Database

SELECT DB_NAME(database_id) AS DatabaseName,

CAST([Name] AS varchar(20)) AS NameofFile,

CAST(physical_name AS varchar(100)) AS PhysicalFile,

type_desc AS FileType,

((size * 8)/1024) AS FileSize,

MaxFileSize = CASE WHEN max_size = -1 OR max_size = 268435456 THEN 'UNLIMITED'

WHEN max_size = 0 THEN 'NO_GROWTH'

WHEN max_size <> -1 OR max_size <> 0 THEN CAST(((max_size * 8) / 1024) AS varchar(15))

ELSE 'Unknown'

END,

SpaceRemainingMB = CASE WHEN max_size = -1 OR max_size = 268435456 THEN 'UNLIMITED'

WHEN max_size <> -1 OR max_size = 268435456 THEN CAST((((max_size - size) * 8) / 1024) AS varchar(10))

ELSE 'Unknown'

END,

Growth = CASE WHEN growth = 0 THEN 'FIXED_SIZE'

WHEN growth > 0 THEN ((growth * 8)/1024)

ELSE 'Unknown'

END,

GrowthType = CASE WHEN is_percent_growth = 1 THEN 'PERCENTAGE'

WHEN is_percent_growth = 0 THEN 'MBs'

ELSE 'Unknown'

END

FROM master.sys.master_files

WHERE state = 0

AND type_desc IN ('LOG', 'ROWS')

ORDER BY database_id, file_id