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Downloads an uncompressed 24-bit Windows BMP. Files are often larger than the JPG because BMP does not use JPEG compression.

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Convert JPG to BMP online

Convert JPG to BMP online free. Turn JPEG photos into Windows BMP bitmap files in your browser — no signup, no upload.

What is a JPG to BMP converter?

A JPG to BMP converter turns a compressed JPEG photo into a Windows BMP (bitmap) file. Searchers looking for jpg to bmp, jpg en bmp, or jpg bmp files usually need an uncompressed .bmp for older software, printers, or workflows that do not accept JPEG. This free browser tool decodes your .jpg/.jpeg, packs pixels into a 24-bit BI_RGB BMP, and downloads converted.bmp — no CloudConvert account required. For PNG sources with transparency, use PNG to BMP Converter; to go the other way, use BMP to JPG Converter.

JPG to BMP features

A focused JPEG to bitmap converter in the browser.

  • True BMP download

    Exports a real .bmp file (24-bit BI_RGB), not a renamed JPG.

  • JPG / JPEG upload

    Accepts .jpg and .jpeg photos.

  • Live preview

    See the bitmap-bound image before you download.

  • Private conversion

    Pixels stay on your device; nothing is uploaded to process.

How to convert JPG to BMP

Three steps to get a Windows bitmap from a JPEG.

  1. Upload JPG

    Drop a .jpg / .jpeg photo or pick an example.

  2. Preview

    Confirm dimensions look right in the preview.

  3. Download BMP

    Save converted.bmp for legacy apps that require bitmap files.

Tips for JPG → BMP

Avoid surprises with file size and quality.
  • 01

    Expect larger files

    BMP is uncompressed — a 2 MB JPG can become tens of MB.

  • 02

    No extra JPEG loss on encode

    We decode once then write BMP; we do not re-JPEG the pixels.

  • 03

    Need transparency?

    Start from PNG with PNG to BMP Converter — classic BMP has no alpha.

  • 04

    Wrong direction?

    Compress a bitmap with BMP to JPG Converter instead.

JPG to BMP tools compared

How this free converter differs from common options.

  • CloudConvert JPG to BMP

    Ranks for jpg to bmp and related queries. Cloud processing with free-tier limits.

  • Desktop image editors

    Photoshop and Preview can Export/Save As BMP. This page is faster for a one-off download.

  • This JPG to BMP tool

    Browser-only true BMP encode — no signup and no upload for processing.

Great for

When older software still asks for .bmp.

  • Legacy Windows tools

    Editors and utilities that only open BMP.

  • Print / kiosk workflows

    Some devices still expect uncompressed bitmaps.

  • JPG BMP file packs

    Convert photos before bundling “jpg bmp files” for a client.

  • Round-trip with /bmp-to-jpg

    Convert back to JPEG when you need a smaller shareable photo.

Why use this tool

A free, private way to convert JPG to BMP online.

  • 100% free

    No sign-ups, watermarks, or hidden limits.

  • Privacy first

    Photos stay in your browser tab.

  • Real BMP bytes

    Proper BI_RGB encoding — not a fake extension rename.

  • No desktop app

    Works in modern browsers without installing converters.

Technical details

How JPG to BMP conversion works in this tool.
Conversion path
JPEG decode → Canvas ImageData → uncompressed 24-bit BMP (BI_RGB).
Input
.jpg / .jpeg up to 15 MB; longest edge capped at 8192 px.
Output
Windows BMP, 24-bit, bottom-up rows, 4-byte row padding.
Reuse
Shares the same BMP encoder as PNG to BMP Converter.

Sources & References

References on JPEG, BMP/bitmap, and browser-side conversion.
  • “JPEG is a commonly used method of lossy compression for digital images, particularly for those images produced by digital photography.”
    — Wikipedia — JPEG

    JPEG image format: JPG/JPEG photos are decoded in the browser, then packed into an uncompressed BMP for legacy software. en.wikipedia.org/wiki/JPEG

  • “The BMP file format, also known as bitmap image file or device independent bitmap (DIB) file format or simply a bitmap, is a raster graphics image file format used to store bitmap digital images.”
    — Wikipedia — BMP file format

    BMP file format: This converter writes an uncompressed 24-bit Windows BMP (BI_RGB) — a common target when people search jpg to bmp or jpg bmp files. en.wikipedia.org/wiki/BMP_file_format

  • “The Canvas API provides a means for drawing graphics via JavaScript and the HTML canvas element.”
    — MDN — Canvas API

    Canvas API: JPEG is decoded to Canvas, then encoded to BMP bytes locally — no upload. developer.mozilla.org/en-US/docs/Web/API/Canvas_API

  • “The ImageData interface represents the underlying pixel data of an area of a canvas element.”
    — MDN — ImageData

    ImageData: RGBA pixels are remapped to BGR rows with 4-byte padding for a valid BMP file. developer.mozilla.org/en-US/docs/Web/API/ImageData

Frequently Asked Questions

Quick answers about this tool—open a question to read more.