mysql database size

SELECT table_schema "DB Name",
        ROUND(SUM(data_length + index_length) / 1024 / 1024, 1) "DB Size in MB" 
FROM information_schema.tables 
GROUP BY table_schema; 

SELECT table_schema AS "Database", 
ROUND(SUM(data_length + index_length) / 1024 / 1024, 2) AS "Size (MB)" 
FROM information_schema.TABLES 
GROUP BY table_schema;

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 ;