Convert PNG to BMP, Free
Files convert instantly in your browser. 100% private, any file size, no account needed.
Drop your PNG file here
or click to browse. Any file size.
Conversion runs entirely in your browser. Your file never leaves your device.
How to convert PNG to BMP
BMP (Bitmap) is one of the oldest raster image formats, developed by Microsoft. It stores pixel data with minimal or no compression, making files large but instantly compatible with virtually every Windows application, printer driver, and embedded system from the past 40 years. If you have a PNG and need it as a BMP for a legacy application, hardware device, embedded system, or industrial software that requires BMP input, this converter handles the translation in your browser via WebAssembly.
Converting PNG to BMP is a lossless process in terms of color data: both formats store pixel color values and neither applies lossy compression (though some BMP variants support RLE compression). The main practical result is a larger file: a PNG optimized by its lossless deflate compression may be 5-10x smaller than the equivalent BMP. The BMP will be pixel-for-pixel identical to the PNG.
Upload your PNG file
Drop one or more .png files onto the converter. Transparent PNGs are accepted; transparency will be handled according to the bit depth setting.
Choose bit depth
Select 24-bit (true color, no transparency) or 32-bit (with alpha channel support). Note: not all BMP readers support 32-bit BMP.
Convert in-browser
The WebAssembly converter runs locally. No file is uploaded; conversion is fully private.
Download the BMP
Save the output. Expect a file significantly larger than the source PNG.
Frequently asked questions
Why is the BMP file so much larger than the PNG?
PNG uses lossless deflate compression that typically reduces file size by 50-80%. BMP stores raw or minimally compressed pixel data. A 1 MB PNG might produce a 5-15 MB BMP.
Does BMP support transparency?
Some BMP variants (32-bit with alpha channel) support transparency, but older applications and many readers do not handle it correctly. 24-bit BMP has no transparency; transparent pixels become white.
What is the typical use case for BMP files?
Legacy Windows applications, some industrial and embedded systems, older printer drivers, and Windows wallpaper configurations. In modern software, PNG or JPEG are always preferred.
Will colors look different in the BMP versus the PNG?
At 24-bit color, the pixel values are identical. Apparent color differences indicate a color profile issue; check that both files are using the same color space (usually sRGB).
Can I convert back from BMP to PNG?
Yes. Because no lossy compression is involved, converting BMP back to PNG will produce a PNG identical in pixel content to the original PNG (before BMP conversion).