File size difference between path Finder and Dropbox.

[Jean-Charles M.1]

Hello,

I see significant file size differences between pathfinder and dropbox, why?
Example : a .pptx file: on pathfinder's get info: 9.1MB, on dropbox 8.64MB

thank you

[Здравко]

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@Jean-Charles M.1 wrote:

Yes I am sure that both values are indeed express in MB. MB: " a unit of computer memory or data storage capacity equal to 1,048,576 (220) bytes"

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@Jean-Charles M.1, Just for your info: Apple usually uses SI style units in its products, while Dropbox uses binary style units! So, keeping in mind your observations, don't be so sure - better check it; don't just assume something (what you do as seems). Follow the Hannah's advice to check it and make it sure.

Does your Get Info panel, posted before, confirm your supposion? 🙂 I assume you can check if the units there match what you said (elementary arithmetic). Do they?

[Jean-Charles M.1]

Hey Hannah,

Thank you.

Yes the second screenshot is what I see when I right click the file in my Dropbox folder and click on "get info".

Following the same steps, after downloading the same file from the Dropbox website to my computer, I see 9.1MB.

[Hannah]

Thanks for the info, @Jean-Charles M.1.

I looked a bit into this and I believe @Здравко might be right on why this might be happening.

As he mentioned, the difference in disk usage is due to how different vendors calculate a "GB".

Operating systems like Mac OS will tell you that a file is larger than it appears on our website, because it calculates the usage differently. 

You can more about this here.

I hope this helps.