Google Cloud Storage - Size Usage

For my personal photo archive, I utilize Google Cloud Nearline. My main editing rig at home is a PC, so I'm using PowerShell and gsutil. The du command stands for disk usage. Here's how I check how many gigabytes/terabytes of storage I'm currently using.

gsutil du -s gs://bucket-name-goes-here/ | %{ $_.Split(' ')[0]/1GB }
gsutil du -s gs://bucket-name-goes-here/ | %{ $_.Split(' ')[0]/1TB }