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FITS Converter

Convert FITS images to a variety of formats, edit and optimize images online and free.

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Flexible Image Transport System (.fits)

Flexible Image Transport System, abbreviated FITS, is an open standard designed for scientific (especially astronomical) data acquisition. FITS format is the most used digital file format in astronomy.

More About FITS

How to convert FITS?

Upload FITS File

Select a FITS image from your computer, or drag & drop it on the page.
Choose Output Formats

Choose an output format you wish to convert your FITS file.
Convert & Download

You will be redirected to the download page to see the conversion status and download your file.

Convert Files on Desktop

macOS

Windows

Linux

Convert FITS on macOS

Follow steps below if you have installed Vertopal CLI on your macOS system.

Open macOS Terminal.
Either cd to FITS file location or include path to your input file.
Paste and execute the command below, substituting in your FITS_INPUT_FILE name or path. $ vertopal convert FITS_INPUT_FILE --to output_format

Convert FITS on Windows

Follow steps below if you have installed Vertopal CLI on your Windows system.

Open Command Prompt or Windows PowerShell.
Either cd to FITS file location or include path to your input file.
Paste and execute the command below, substituting in your FITS_INPUT_FILE name or path. $ vertopal convert FITS_INPUT_FILE --to output_format

Convert FITS on Linux

Follow steps below if you have installed Vertopal CLI on your Linux system.

Open Linux Terminal.
Either cd to FITS file location or include path to your input file.
Paste and execute the command below, substituting in your FITS_INPUT_FILE name or path. $ vertopal convert FITS_INPUT_FILE --to output_format