What is a .FITS file?

A .FITS file is a FITS File Format associated with Medical & Science. NASA astronomical camera raw data format storing telescope scientific observations.

How do I open a .FITS file on Windows or Mac?

You can open .FITS files using SAO Image DS9, FITS Liberator, AstroImageJ. If you do not have native software installed, you can use OpenAnyFile's free File Identifier or convert .FITS to a standard format in your browser.

Is a .FITS file safe to open?

This format carries a safety rating of Low Risk. Standard astronomical data standard used by Hubble and James Webb telescopes

Can I convert a .FITS file to other formats?

Yes! .FITS can be converted to formats such as .PNG directly in your web browser.

What should I do if a .FITS file is corrupted or won't open?

If your .FITS file displays an invalid header or signature error, check its magic bytes hex header (Varies) using OpenAnyFile's Magic Byte Detector or follow our step-by-step file repair guide.

How do I open .FITS files?

You can open .FITS files using SAO Image DS9, FITS Liberator, AstroImageJ.

Medical & Science • MIME: image/fits

.FITS – FITS File Format

NASA astronomical camera raw data format storing telescope scientific observations.

Primary Category Medical & Science

MIME Type image/fits

Magic Bytes Signature Varies

Security Risk Rating Low Risk

Recommended Software to Open .FITS

SAO Image DS9

windows, mac, linux • Free

FITS Liberator

windows, mac, linux • Free

AstroImageJ

windows, mac, linux • Free