How to convert MB to KB in a JPEG file size

Updated April 17, 2017

If you browse through the files on your computer, depending on the settings in Windows Explorer, you may see details including the date, size and type of the files. These factors are not available in all folder view options, but you can see them if your folder is set to “Details” view. The JPEG files have the words “JPEG Image” in the “Type” column and the size of the file is shown in the “Size” column in Kilobytes, denoted by KB. If you have a file and you know its size in Megabytes, but want to know how much that is in Kilobytes, there is a very simple process to convert from MB to KB.

Note down the size of the JPEG file in Megabyte notation. For an example, use a file size of 14 MB.

Multiply that number by 1,000. This is because there are 1,000 Kilobytes to each Megabyte, so a 14 MB file has 14,000 Kilobytes.

Multiply the Kilobyte figure by a thousand again if you want to see how your JPEG file size looks in bytes. So, that 14 MB files turns out to have 14,000,000 bytes.


This method uses the International System of Units, which you may see written as “SI.” Techies will tell you that a Megabyte is actually 1024 Kilbytes. They are using the binary system, which is correct in computer usage, but not commonly used in the general population. In truth, a 1,024 bytes is a kibibyte and 1,024 kibibytes makes a Mebibyte.

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About the Author

Stephen Byron Cooper began writing professionally in 2010. He holds a Bachelor of Science in computing from the University of Plymouth and a Master of Science in manufacturing systems from Kingston University. A career as a programmer gives him experience in technology. Cooper also has experience in hospitality management with knowledge in tourism.