MySQL - how to check database size?

Using MySQL querry it is possible to check database size in following way.

1. Size in bytes query example

SELECT 
  `table_schema` AS 'database_name',
  SUM(data_length + index_length) AS 'database_size' 
FROM `information_schema`.`tables `
GROUP BY `table_schema`;

Result:

2. Size in kilobytes query example

SELECT 
  `table_schema` AS 'database_name',
  ROUND(SUM(data_length + index_length) / 1024, 2) AS 'database_size' 
FROM `information_schema`.`tables`
GROUP BY `table_schema`;

Result:

3. Size in megabytes query example

SELECT 
  `table_schema` AS 'database_name',
  ROUND(SUM(data_length + index_length) / 1024 / 1024, 2) AS 'database_size' 
FROM `information_schema`.`tables`
GROUP BY `table_schema`;

Result: