Get Database Size

Database size keeps on growing daily, and I wanted to know the size of my database. Finally i got a query that fulfills my requirement:

SELECT sysDa.Name,sysDa.create_date,sysDa.recovery_model_desc, temp.DBSize8KBPage
FROM
(
SELECT sysMas.database_ID, sysMas.size, SUM(size) as DBSize8KBPage
FROM sys.master_Files sysMas
GROUP BY sysMas.DataBase_ID, sysMas.size
)
temp
INNER JOIN
Sys.Databases sysDa
on temp.Database_ID = sysDa.DataBase_ID