How to divide a large file into several parts
How to divide a large file into several parts

Sometimes the files are too large to be sent by mail, WhatsApp or any other means. One solution for this is to cut the file and divide it into several parts, which you can send separately. That is, instead of sending a file of 100 MB, you send ten files of 10 MB.

Although this technique was more famous a few years ago when Internet connections were slower, nowadays it is still useful because applications and websites still have a maximum file limit. For example, in WhatsApp it is 100 MB. We will explain how to cut files with 7-Zip, the popular free file compressor.

1Install 7-ZIP

The first thing you will need is, obviously, 7-Zip. To download it, visit its web page and click on Download, in the 32 bit or 64 bit version, depending on whether your Windows is 32 or 64 bits. 7-Zip also has versions for Linux, although the way to cut files there will be through command line. 7-Zip does not have a Mac version, although it recommends Keka instead .

The installation of 7-ZIP is the simplest you will find. As soon as you have steps, there is no trap in between and it ends in a couple of seconds. Simply press Install and wait for it to finish.

2Set the compression

After installing 7-ZIP you do not need to open it. Instead, locate the file you want to cut into several parts and click with the right mouse button on it. In the context menu, first choose 7-Zip (1) and then Add to archive (2).

7-ZIP uses a default format, 7Z, for the files it generates. However, it is better to use a more universal format such as ZIP, so that anyone can unite and decompress the parts easily. To do this, click on 7z, next to Archive format, and choose zip from the drop-down list.

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In the lower part of the window you have another configuration to change. In Split to volumes, bytes you must choose the maximum size of the parts in which it will be cut. For example, if you want to be cut in 10MB parts, choose 10M. For parts of 100 MB, 100M, and so on.

If you need another quantity different from the available ones, you can write it manually. 7-ZIP recognizes the letters b, k, myg as bytes, kilobytes, megabytes and gigabytes respectively. For example, to create 50 megabyte parts, write “50m”.

3Divide your file into parts

If everything is in order, press OK. You will then see a window like the previous one, which shows the detail of the compression and file partition, as well as a lot of information about the process that you do not need to read.

When finished, you will have a lot of files, which will occupy at most the number you specified. The latter probably occupies less. The first of them will have the extension .ZIP.001, and that number will be increased in each part. By opening the first file in any file decompressor you will be able to recover the original large file.

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