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How many bytes does a USB hold?

Updated: 10/3/2023
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12y ago

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It depends upon how large the drive is. USB flash drives come in a variety of sizes, from 64MB to 64GB; some suppliers offer as high as 256GB built to order flash drives.

So, a bit is two characters.
A byte is eight bits, 16 characters.
A kilobyte is one thousand bytes, or 16,000 characters.
A megabyte is one thousand kilobytes, or 16,000,000 bytes.
A gigabyte is one thousand megabytes, or 16,000,000,000 bytes.
So, 64MD is 1,024,000,000 bytes; and, 64GB is 1,024,000,000,000 (yep! trillion) bytes.

The actual available storage is less than the total storage as some space is used up in formatting, and as I understand, the actual storage is slightly more than the calculated amounts above due to the fractional amounts not included in the calculations. What is here, though, is a good ballpark figure.

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11y ago
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