Conversion Bytes to MB

1 MB is always 1,048,576 bytes.

It is only by simplification that we consider 1 KB = 1,000 bytes, 1 MB = 1 KB, etc.; because in other units of measurement, 1 kilo is equal to 1,000 units, for example grams.

However, manufacturers of storage media such as hard drives use the simplified method, so when they tell you 120 GB, you do not have 128,849,018,880 bytes, but rather 120,000,000,000, which is a loss of a little more than 8 GB.

Depending on what you want to do, you will need to choose between the two notations (exact or simplified).

Exact:
1 MB = 1,048,576 bytes
2 MB = 2,097,152 bytes
5 MB = 5,242,880 bytes
10 MB = 10,485,760 bytes

Simplified:
1 MB = 1,000,000 bytes
2 MB = 2,000,000 bytes
5 MB = 5,000,000 bytes
10 MB = 10,000,000 bytes

So for my upload script, the limit is 5MB, so in the line for the limit in bytes, I put: 5,242,880 Bytes!
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Best regards, Yoann166 :)

Thank you very much!
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Best regards, Yoann166 :)

Oula, so for my upload script to be a maximum of 2 MB, I need to set it to 2,000,000 Bytes?
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Best regards, Yoann166 :)

Yes.
If it's for an upload script, I would personally choose a straightforward notation.
To simplify, you can understand it as general, because as I told you, it is to avoid misunderstandings when learning the basics (I did it in a vocational diploma).
Indeed, when we see 1,000 meters, that equals 1 kilometer.
The only exception to this rule is for bytes.

You're welcome, and good luck with your script.
Hoping it will be useful to others ;-)

Hello everyone,
I'm getting a bit confused with bytes, just to know if a byte is a measure of speed and how many bytes are there in one octet???
Thank you for your response
Have a good evening
Best regards
Papoute76