To change the units from MiB/GiB to MB/GB in Fastfetch, you’ll want to adjust the binaryPrefix setting in your configuration. Here's how you can do it:

🛠️ Update Fastfetch Config to Use MB/GB Units

In your Fastfetch JSON config file (usually located at ~/.config/fastfetch/config.jsonc), find or add the following under the display section:

json "display": { "size": { "binaryPrefix": "jedec" } }

🔍 What This Does

• Setting "binaryPrefix": "jedec" switches the unit system from IEC (MiB/GiB) to JEDEC (MB/GB).
• This affects how memory and disk sizes are displayed—using base 10 (1 GB = 1000 MB) instead of base 2 (1 GiB = 1024 MiB).

You can also pass this directly via command line if you prefer:

bash fastfetch --size-binary-prefix jedec