Apple has added another important utility feature to iPadOS 18: the Files app is able to erase and reformat drives. Kaleb Cadle of ByteBits writes:
Now in the Files app on iPadOS 18, when we right click or hold press on an external drive and select “Erase”, new options appear for reformatting the drive. Currently, the format options here are APFS (with options for Case Sensitive or Encrypted), ExFAT, and MS-DOS (FAT), the same format options available in Disc Utility (with the exception of macOS extension formats which wouldn’t make much sense for this feature on iPadOS).