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BMP to JPG Converter

Convert BMP images to JPG, free, instantly, and entirely in your browser — no uploads, no signup. Shrink huge uncompressed bitmap files to a fraction of their original size.

Drop your BMP image here or click to upload

Why convert BMP to JPG?

BMP is typically stored fully uncompressed, or with only minimal compression, which makes even ordinary photos balloon into enormous files. Converting BMP to JPG keeps the image looking essentially the same while cutting the file size dramatically, making it practical to email, upload, or store.

The size math, worked out

A standard 1920×1080 (1080p) 24-bit BMP stores roughly 1920 × 1080 × 3 bytes of raw pixel data, about 6,220,800 bytes, or ~6.2MB. The same image saved as JPG at 85% quality typically lands well under 500KB — often a 90%+ size reduction — because JPG's DCT-based compression is dramatically more efficient than BMP's raw pixel storage.

BMP files still show up today from legacy Windows applications, certain scientific and medical imaging tools, some screenshot utilities on older systems, and Windows Paint's default save format in some configurations. BMP has no meaningful advantage for sharing or web use; it exists purely for legacy compatibility and simple raw pixel access. Converting to JPG (or PNG if you need transparency or lossless quality) is almost always the right move before sharing or uploading a BMP file anywhere.

How to convert BMP to JPG

  1. Drop your .bmp file into the upload box above, or click to browse.
  2. Confirm JPEG is selected as the output format (it's pre-selected for you).
  3. Adjust the quality slider — 85% is a good default for photos.
  4. Click Convert, then download your new, much smaller .jpg file.

Frequently asked questions

Why are BMP files so much bigger than JPG?

BMP typically stores images as uncompressed raw pixel data. A standard 1920×1080 24-bit BMP works out to roughly 1920 × 1080 × 3 bytes, about 6.2MB, while the same image saved as JPG at 85% quality is usually well under 500KB thanks to JPG's DCT-based compression.

Do I lose quality converting BMP to JPG?

A small amount from JPEG's lossy compression, but for typical photo content it's imperceptible at 85% quality or higher. BMP's "quality" was never doing anything beyond storing raw, uncompressed pixels anyway.

Why would I still have a BMP file today?

BMP files still turn up from legacy Windows software, some scientific and medical imaging tools, older screenshot utilities, and Windows Paint's default save format in some configurations.

Is there a file size limit?

There's a 10000x10000 pixel dimension cap, based on what your browser's memory can handle during conversion — see our Privacy Policy for how conversion is handled entirely in your browser.