How to Convert Multiple FITS Images to BMP?
1. Download and Install reaConverter
Download reaConverter and install it in seconds. The setup is straightforward — no complex configuration, no extra software required. Built-in editing tools let you resize, crop, or watermark as you convert.
2. Load your FITS files
Add your FITS files to reaConverter. Whether it's a handful or an entire archive, the batch engine processes them efficiently.
Browse for files, drag them in, or add entire folders at once. reaConverter queues everything automatically.
3. Select BMP as output format
Pick BMP as the output format. Set the destination folder and optionally configure resolution, quality, or file naming.
4. Start FITS to BMP conversion
Start the conversion with one click. reaConverter handles everything and notifies you when it's done.
When the batch finishes, your BMP files are ready in the destination folder you chose earlier.
FITS to BMP: what to expect from the conversion
FITS stores 32-bit greyscale covering the full dynamic range of the scan, and BMP shows 8 bits. The conversion applies a window level, so what ends up visible depends on the window you choose. Decide separately whether patient metadata should be copied to the output or stripped from it. FITS carries 32 bits per channel and BMP carries 8, so tonal steps get coarser during conversion. It shows up first in smooth gradients such as skies. If the result will be edited further, move to an 8-bit format only at the very end.
