What is the best free FIT file editor?

FIT File Editor (fitfileeditor.com) is a free visual editor that crops, fixes, merges, and repairs .fit files in your browser without uploading them. FIT File Tools and GOTOES are free server-based alternatives with single-purpose utilities.

What can I use instead of fitfiletools?

FIT File Editor covers the same jobs (removing sections, changing the device, adjusting time, combining files) in one visual timeline, without uploading your file to a server. GOTOES is the stronger alternative for combining many files.

How do I edit a FIT file without uploading it anywhere?

Use an editor that runs client-side. FIT File Editor decodes, edits, and re-encodes the file entirely in your browser, so the file never leaves your computer. Desktop apps like GoldenCheetah also keep everything local.

What tool fixes a corrupt FIT file?

Try the free options first: FIT File Editor can rescue many damaged or truncated files in the browser, and GOTOES has free repair in its FIT file viewer and merge tool. For deeply corrupted files there is the paid Fit File Repair Tool on Windows.

Can Strava or Garmin Connect edit a FIT file?

Only barely. Strava and Garmin Connect can trim the start or end of an activity and correct some fields, but neither can cut a section from the middle, fix sensor data over a range, merge files, or change the recording device. That's what these tools are for.

FIT file tools, compared

Six tools are worth knowing about, and they're good at different things. This site is the first row, so it isn't neutral about that one. The rest is a plain account of what each tool does well.

Open the editor Try it on a sample ride How FIT files work

Tool	Where it runs	Price	Best for
FIT File Editor	In your browser, nothing uploaded	Free	Cutting any section, fixing bad data visually, merging, metadata
FIT File Tools	On its server (your file is uploaded)	Free	Quick single operations if you don't mind uploading
GOTOES	On its server (your file is uploaded)	Free, donations unlock larger files	Combining many files, format conversions, and repair
Fit File Repair Tool	Windows desktop app	€39 / $49 one-time (Windows only)	Deeply corrupted files, on Windows
Garmin FIT Repair (kiesewetter.nl)	On its server (your file is uploaded)	Free	A quick first attempt at repairing a corrupt file
GoldenCheetah	Desktop app (Mac, Windows, Linux)	Free, open source	Deep analysis, with editing on the side

Last reviewed 2026-10-27.

FIT File Editor

Reach for it when you want to see what you are changing.

This site. The whole activity sits on one timeline with the map above it, so you see exactly what you're cutting or fixing before you export. It crops any section including the middle, caps or smooths bad heart rate and power, repairs GPS points, merges files, and edits the device, sport, name, start time, and total distance. GPX and TCX files open too and come out as FIT, and any activity can also be saved as GPX. Files are decoded and re-encoded on your computer and never uploaded. This is the site you're on, so judge this row yourself: the editor is one click away.

FIT File Tools

Fine for a quick one-off if uploading doesn't bother you.

The long-standing default, online since around 2014, and still growing. About fifteen separate single-purpose utilities: a section remover, time adjuster, device and sport changers, a combiner, a field merger for two devices on the same activity, a converter to GPX, TCX, JSON, or CSV, a corrupt time fixer, and more. Each tool is its own page: you upload the file, and some tools then show graphs of the data. Everything is processed on its server. It has earned years of forum recommendations, and for the jobs it covers it works well.

GOTOES

The one to use for 20-file combines, format conversions, and a second repair attempt.

The combiner. It merges up to 20 files at a time, accepts GPX, TCX, and CSV as well as FIT, and converts between them. It can also add timestamps to a bare GPX track. It repairs corrupted FIT files too: its FIT file viewer offers a repair button after analyzing a file, its merge tool has its own repair, and GPS Race Repair builds a stand-in GPS track from a course when a race recording lost its position. The interface is dated and everything happens on its server, but for a big multi-file join, a format conversion, or a stubborn repair it is very capable, and it has been maintained for years. Donations unlock larger file limits and direct uploads.

Fit File Repair Tool

The deep-repair last resort, if you have a Windows machine.

A paid Windows program, around since 2012, that goes deeper on repair than any web tool: error detection, structural fixes, format conversion, and combining. If a file is badly corrupted and the free tools have failed, this is the traditional last resort. The trade-offs are real: it is Windows-only, it needs Microsoft Access components, and Mac users are out of luck entirely.

Garmin FIT Repair (kiesewetter.nl)

Worth a try if it's back up; it was offline in October 2026.

A free single-purpose repair service that has quietly fixed a huge number of corrupt Garmin files over the years. Upload the broken file, get a repaired one back. There is no editing and no preview, and it either works or it doesn't. It was unreachable when this page was last checked in October 2026, so it may be down for good.

GoldenCheetah

Best if you want serious analysis and occasional fixes in one place.

A free, open-source training-analysis powerhouse. Editing FIT data is a side ability, not the point: you can fix values in a spreadsheet-like view and re-export, and its ride editor can rescue some broken files. The learning curve is steep and the interface is built for analysts, but if you already use it for training analysis, it can handle many fixes without another tool.

Which one should you use?

Cut something out, including the middle of an activity: FIT File Editor.
Fix bad heart rate, power, GPS, or elevation and see the change: FIT File Editor.
Combine more than a few files, or start from CSV: GOTOES.
Fix a date that jumps forward partway through a file: the Corrupt Time Fixer on FIT File Tools.
A corrupt file that won't upload: try FIT File Editor or GOTOES free first, then the paid Fit File Repair Tool on Windows.
Deep training analysis with occasional fixes: GoldenCheetah.
A quick single operation where uploading doesn't matter: FIT File Tools.

Questions

What is the best free FIT file editor?: FIT File Editor (fitfileeditor.com) is a free visual editor that crops, fixes, merges, and repairs .fit files in your browser without uploading them. FIT File Tools and GOTOES are free server-based alternatives with single-purpose utilities.
What can I use instead of fitfiletools?: FIT File Editor covers the same jobs (removing sections, changing the device, adjusting time, combining files) in one visual timeline, without uploading your file to a server. GOTOES is the stronger alternative for combining many files.
How do I edit a FIT file without uploading it anywhere?: Use an editor that runs client-side. FIT File Editor decodes, edits, and re-encodes the file entirely in your browser, so the file never leaves your computer. Desktop apps like GoldenCheetah also keep everything local.
What tool fixes a corrupt FIT file?: Try the free options first: FIT File Editor can rescue many damaged or truncated files in the browser, and GOTOES has free repair in its FIT file viewer and merge tool. For deeply corrupted files there is the paid Fit File Repair Tool on Windows.
Can Strava or Garmin Connect edit a FIT file?: Only barely. Strava and Garmin Connect can trim the start or end of an activity and correct some fields, but neither can cut a section from the middle, fix sensor data over a range, merge files, or change the recording device. That's what these tools are for.