I am using RDS for mysqlDB with storage of 60 GB , There are many databases and total size is of databases are 20 GB . But at present RDS is showing just 10 GB free space .. I am unable to check why there is a gap of 30GB and how do i clear occupied space ?
Take this image as a reference:
In your RDS panel you will find that summary part of Memory(RAM), CPU and Storage.
Hope it helps you.