A .FIT file is a FIT File Format associated with Medical & Science. Guide to .FIT Flexible Image Transport System astronomical observation data and Garmin GPS activity logs.

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

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

Is a .FIT file safe to open?

This format carries a safety rating of Low Risk. FITS header records start with 80-character ASCII card images

Can I convert a .FIT file to other formats?

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

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

If your .FIT 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 .FIT files?

You can open .FIT files using SAO Image DS9, FITS Liberator, Garmin Connect, GIMP.

Medical & Science • MIME: image/fits

.FIT – FIT File Format

Guide to .FIT Flexible Image Transport System astronomical observation data and Garmin GPS activity logs.

Primary Category Medical & Science

MIME Type image/fits

Magic Bytes Signature Varies

Security Risk Rating Low Risk

Recommended Software to Open .FIT

SAO Image DS9

windows, mac, linux • Free

FITS Liberator

windows, mac, linux • Free

Garmin Connect

windows, mac, linux • Free

GIMP

windows, mac, linux • Free