JPEG to BMP Converter

What happens when you convert JPEG to BMP

• The image is decoded and written as a 24-bit uncompressed bitmap.
• BMP is lossless, so no further detail is lost, but it cannot restore detail the JPEG compression already removed. Expect a larger file.

How to convert JPEG to BMP online

1. Press "Choose JPEG files" and select one or more files, or drag them onto the box. You can add files of any size your device can hold in memory.
2. Adjust the settings if you need to. The output is lossless, so there is no quality setting to worry about.
3. Press "Convert to BMP". Images convert in a second or two each.
4. Save each BMP with its download button. Close the tab and every trace of the files is gone from memory.

Why convert JPEG to BMP?

JPEG files usually come from camera photos, scanned documents and web images. People convert them to BMP because BMP is read by almost every Windows program, embedded display and old piece of software.

In short, JPEG is good at what it was made for, and BMP is the more practical choice when the file has to open, upload or print somewhere else. JPEG opens in every browser and image viewer, while BMP opens in browsers and every Windows image tool.

How to convert JPEG to BMP on Windows, Mac, iPhone and Android

On Windows

Open this page in Chrome, Edge or Firefox, drag your JPEG files in from File Explorer, and press Convert. Each BMP is saved to your Downloads folder. Paint can also re-save an image as BMP with Save as, provided Windows can open the JPEG in the first place.

On a Mac

Safari, Chrome and Firefox all work. Drag the JPEG files from Finder onto the drop zone and the BMP files land in Downloads.

On iPhone and iPad

Open the page in Safari and tap Choose JPEG files. You can pick from Photos or from the Files app. The converted BMP appears in Files, in the Downloads folder; to put it in your photo library, open it there, tap Share and choose Save Image.

On Android

Open the page in Chrome, tap Choose JPEG files and pick them from Files or your gallery. The BMP is saved to the Download folder, where any file manager can find it.

Best settings for JPEG to BMP

A 24-bit BMP stores every pixel uncompressed, three bytes each, so size is simply width times height times three: a 12 megapixel photo becomes about 36 MB. Use the Maximum width setting if the program that needs the BMP does not need full resolution.

JPEG vs BMP: the differences

About JPEG and BMP files

What is a JPEG file?

JPEG and JPG are the same format. The three-letter extension dates from old Windows systems that only allowed three characters after the dot, and both names are still in use.

What is a BMP file?

BMP usually stores pixels with no compression at all, so a 12 megapixel photo is about 36 MB. That size is the price of being readable by almost any program ever written for Windows.

JPEG to BMP not working? Common problems

• Colours look slightly different. Browsers convert images to the standard sRGB colour space when they decode them, so wide-gamut and CMYK images can shift a little.
• A phone photo comes out upright even though it looked sideways elsewhere. That is correct: the rotation stored in the photo is applied during conversion, so the BMP is always the right way up.
• The file is bigger than expected. The BMP is usually larger, because it stores every pixel without compression losses, while the JPEG was compressed lossily.

Convert JPEG to BMP from the command line

If you work in a terminal, ImageMagick converts JPEG to BMP in one line:

magick input.jpeg output.bmp

To convert every JPEG in a folder at once, use magick mogrify -format bmp *.jpeg. The converter on this page does the same job without installing anything.