So, I’m pretty sure Avast used GB in the past, but now when I look at my System Junk in Performance Issues, I see GiB instead of GB. Why did that change, if at all (I’m not sure whether it did change).
Hi, it might be related to the language used. Please post a screenshot.
Screen shot:
See attached image on how to attach images 
Thanks DavidR! 
You’re welcome.
It certainly looks like it is referring to Gigabytes, no idea why this is displayed/changed as GB is pretty much the default abbreviation.
See https://docs.microsoft.com/en-us/style-guide/a-z-word-list-term-collections/term-collections/bits-bytes-terms and image extract from that article.
Hello Avast User I Guess, can you please attach screen of whole page? It is not clear for me which part of AV it is. We should use GB. But I need to identify the screen, thank you.
Petr
Avast User I Guess, screen is not needed. UI devs found it and it is fixed. Thank you letting us know
Its a common way to differentiate between kilo base 1024 (GiB) and 1000 (GB).
A GiB is 1024³MB but a GB is 1000³MB.
Windows GB are actually GiB whilst storage manufacturers disingenuously(?) use kilo base 1000 to size their products.
This is why an empty, claimed (by the manufacturer) 1TB size HDD will display as only having 931GB of free space ie. 1000,000,000,000MB in Windows.
Its never been the fashion to use GiB let alone MiB or KiB but it does have merit because it could prevent confusion. Of course users would have to understand what it meant and mostly they don’t and likely don’t care either.
You also have to look at it in context, e.g. in terms of files on a computer they are KB, MB, GB.
So the total in terms of System Junk the collective total, it should be GB (gigabytes).