FITS File — Open & Convert .fits Online
What Is a .fits File?
FITS (.fits) is a science file format. FITS stores astronomical image and table data. Created by NASA/IAU, this format is essential for professionals.
How to Open .fits Files
Upload your .fits file to OpenAnyFile and instantly open and inspect it in your browser. No software installation required. Works on Windows, macOS, Linux, iPhone, and Android.
Everything About FITS Files
Popular FITS Conversions
Frequently Asked Questions
What is a .fits file?
A .fits file is a science format called FITS. FITS stores astronomical image and table data.
How do I open a .fits file without installing software?
Upload your .fits file to OpenAnyFile. Our browser-based tool instantly detects and displays it — no downloads needed.
What program creates .fits files?
.fits files are typically created by NASA/IAU.
Can I convert .fits to another format?
Yes. OpenAnyFile converts .fits to PNG, JPG, CSV, TIFF.
Is it safe to open .fits files online?
Yes. OpenAnyFile processes files in a secure, isolated environment. Files are automatically deleted and all transfers use HTTPS.
Can I open .fits on my phone?
Yes. OpenAnyFile works on all mobile browsers including iPhone and Android.