How do I convert JPG to BMP?

Add your JPG file to the upload area above, then press Convert. The BMP file downloads straight to your device. You do not need an account, and there is no watermark.

Are my files uploaded to a server?

No. This conversion runs entirely inside your browser using WebAssembly, so the file never leaves your device — you can even disconnect from the internet after the page loads and it will still work.

Does converting to BMP reduce quality?

No. BMP is a lossless format, so the conversion preserves exactly what is in your JPG file. Note that it cannot recover detail that was already discarded when the JPG was first created — a lossless container does not undo earlier compression.

How large a file can I convert?

Up to 120 MB per file for this conversion. Because the work happens in your browser, the practical limit is your device's memory — larger files work on a desktop with plenty of RAM and may fail on an older phone.

Can I convert several files at once?

Yes. Add as many as you like and press Convert All. Each file is processed independently, so one failure does not stop the rest, and you can download everything together as a ZIP.

Can I use this on my phone?

Yes. FileTools360 works in mobile browsers on iOS and Android, including choosing files straight from your camera roll. Very large videos may run out of memory on a phone — those are better converted on a laptop.

ImageLosslessRuns in your browser

JPG to BMP Converter

Turn JPG files into BMP in a couple of clicks. The universal lossy photo format. Uncompressed raster bitmap. Large but simple. The conversion is lossless — every pixel, sample or byte in the source is preserved.

On your deviceNever uploadedGone when you close the tabHow this works

Drop your files here

JPG files (.jpg, .jpeg, .jpe, .jfif) · up to 120 MB each

or paste files from your clipboard

Ready when you are

Drop a JPG file above and FileTools360 will turn it into BMP — right here on your device, without uploading anything.

⌘K to search converters

How to use it

1
Add your JPG files
Drag them onto the upload area, choose them from your device, or paste them from your clipboard. You can queue several at once.
2
Adjust the settings if you want to
The defaults suit most people. Open Advanced to control dimensions, rotation and metadata removal.
3
Convert and download
Press Convert. Everything happens on your own device — nothing is uploaded. Download files one by one, or grab them all as a ZIP.

JPG and BMP explained

JPEG is a lossy image format designed for photographs. It works by discarding detail the human eye is least likely to notice, particularly in colour and in smooth gradients, which is why it compresses photos far better than it compresses text or line art.

BMP stores pixels essentially raw, with little or no compression. A 1920×1080 BMP is around 6 MB regardless of what the picture contains, because every pixel takes the same space whether it is part of a gradient or a flat colour.

Where JPG files come from: Digital cameras, phone screenshots on Android, and essentially every photo on the pre-2015 web.
Where BMP is used: Legacy Windows software, some scientific and industrial imaging tools.

JPG vs BMP

The two formats solve different problems, which is why converting between them involves trade-offs rather than a straight upgrade.

JPG compared with BMP
Property	Source	Target
Compression	Lossy	Uncompressed
Transparency	No	No
Animation	No	No
Introduced	1992	1990
Browser support	Opens everywhere — every browser, OS and device.	Broad, though rarely the best choice today.

JPG is stronger at: Opens on literally every device, browser and application ever made. Small files for photographic content. Adjustable quality, so you control the size/fidelity trade-off.
BMP is stronger at: Trivially simple to read and write. No compression artefacts whatsoever. Still readable by very old software.

Why convert JPG to BMP?

People make this switch when they run into the limits of JPG: the image has transparency, sharp edges, text, or you plan to edit and re-save it repeatedly. BMP is the better fit when a legacy application specifically requires it.

Be aware of the size trade-off: BMP is uncompressed, so expect the converted file to be considerably larger than the JPG you started with.

JPG limitations that prompt the switch: No transparency — there is no alpha channel at all. Visible artefacts around sharp edges and text. Every re-save degrades the image further (generation loss).
What you give up: Enormous files. No standard support for transparency in most variants.

Does converting JPG to BMP reduce quality?

Going from JPG to BMP moves already-compressed data into a format that stores it exactly. Nothing is lost from this point on, but nothing is recovered either — the detail JPG discarded when the file was first created is gone permanently. Expect a noticeably larger file for identical visual quality.

Saving a JPEG at 100% quality is still lossy — it is a large file that has been through the same discarding process, not a lossless copy.