How to Convert JPG to Bitmap on Windows and Mac

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Written by Darlene Antonelli, MA

Last Updated: November 18, 2024

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Windows Paint

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Mac Preview

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Zamzar Online Converter

This wikiHow will teach you how to convert JPG to Bitmap, which is more commonly referred to as .bmp. You can use MS Paint for Windows computers, Mac's Preview, and Zamzar Online on both your computer's or mobile's web browser.

Things You Should Know

You can convert JPG images to Bitmap or .bmp.
When using Windows Paint, open your file and "Save as" a BMP picture.
When using Mac Preview, open your file and click "Export". Save the format as Microsoft BMP.

Method 1

Method 1 of 3:

Windows Paint

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You'll find this application in the Start menu listed under "P" in the alphabetical listing.
This keyboard shortcut will open File Explorer so you can open a file.

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Once you double-click the file, it will open in your Paint window.
You'll see this in the upper left corner of the application window.
It's usually the last listing in the first group. If you click on it, your File Manager will open and you'll need to change "Save as type" drop-down.
This is usually in the middle of the menu.
You can also select a different location to save the file. The original JPG image will remain unaltered in its original location; the BMP file will save in the designated location.

Method 2

Method 2 of 3:

Mac Preview

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You'll find this application in Finder or in the Dock.
This is a keyboard shortcut that will open Finder.
Once you double-click the file, it will open in Preview.
It's in the upper left corner of your screen.
If you're using a newer version of macOS, you can also click Save as to get the same menu.
A menu of file types will appear.
It's near the middle of the menu. If you don't see this as an option, press and hold down the Option key on your keyboard and the menu will expand to show more file types.
The file will save a copy as a BMP. ^{[1]
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Method 3

Method 3 of 3:

Zamzar Online Converter

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Go to https://www.zamzar.com/convert/jpg-to-bmp/#file-uploader-tool in a web browser. You can use any web browser on your computer, iPhone, iPad, or Android similarly.
- Zamzar is a free online converter that you don't need to sign up for an account to use. If you want upgraded perks, you can sign up for a free account or pay for even better upgrades.
Your file manager will open for you to select your JPG file. You can select multiple files, but you're limited to 50mb per session.
You'll see the name of your file replace "Step 1" as the progress bar fills.
If this is already selected, move on to the next step.
You'll see your conversion progress in the bar below "Step 3."
It's a dark blue button to the right of your converted file's name.
Your file manager will appear and you can change the file name and save location before continuing. ^{[2]
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