This is not possible. MP3 files are already heavily compressed. There's no way to fit the enormous amount of data that a 3 MB MP3 file would have into just 3 KB.
The average file size of a song (mp3) is around 5,000 kb.
It depends on how long the song is and what quality and compression you have it in. An average 3 - 4 minute song in average quality will be around 3MB or 0.003GB
To figure out KB (kilobytes), you need to determine the size of a file in bytes and then convert it to kilobytes by dividing the number of bytes by 1,024. For example, if a file is 2,048 bytes, you would calculate 2,048 ÷ 1,024, resulting in 2 KB. This conversion is based on the binary system, where 1 KB is defined as 1,024 bytes.
Is varies on the lenght of the song, and the compression used. ie 320kb/s, 128kb/s, 64 kb/s etc. The normally are between 3mb 7mb. If a somg is 32mb it is probably lossless, ie. no compression is used (.flac).
It is not possible to convert a measure of digital storage into time (or angle). For example, I have Adobe files which are several 100 KB in size, but there is no logical way in which I could assign a time to them.
To convert kilobytes (KB) to bytes, you multiply the number of kilobytes by 1,024, since 1 KB is equal to 1,024 bytes. Therefore, to convert 5 KB to bytes, you calculate 5 KB × 1,024 bytes/KB, which equals 5,120 bytes.
Kilobyte, or KB.
1 MB = 1024 KB.
To determine the size of a photo in megabytes (MB), right-click on the image file and select "Properties" on Windows or "Get Info" on macOS. The file size will be displayed in the properties window, usually in bytes, kilobytes (KB), or megabytes (MB). If it's in bytes or KB, you can convert it to MB by dividing by 1,024 for KB or 1,048,576 for bytes. Alternatively, you can view the file size directly in file management applications or photo editing software.
Mb=Megabytes Kb=Kilobytes 1 Mb=1,024 Kb so if you are talking about storage on an mp3 player or such yes, mb is better
Kb/gb = gb example: 10 kb = 1/1000 = 0.00001
MB (megabyte) is larger than KB (kilobyte) in terms of file size. 1 MB is equal to 1,000 KB.