This article describes how to find the size of a MySQL® database and the amount of available free space.

Determine the database size

Run the following query in MySQL to display the MySQL data base name and size in megabytes:

SELECT table_schema "Data Base Name", 
sum( data_length + index_length ) / 1024 / 1024 "Data Base Size in MB" 
FROM information_schema.TABLES 
GROUP BY table_schema ;

Determine the amount of available space

Run the following query to view the available free space in megabytes for a MySQL database:

SELECT table_schema "Data Base Name", 
sum( data_length + index_length ) / 1024 / 1024 "Data Base Size in MB",
sum( data_free )/ 1024 / 1024 "Free Space in MB"
FROM information_schema.TABLES
GROUP BY table_schema ;