FIT is a binary format, so is much smaller file size, typically about 1/10 of the size. But this does mean they can be easily edited, eg in a text editor. TCX and GPX are both XML formats, which can be fairly inefficient in terms of file size. Some of this is used by Strava, eg to display the device, or automatically select the activity type. eg the total time, distance, calories, device used, type of sport. TCX or FIT can also contain summary data, for the whole activity. But some devices might record heart rate/cadence in a different format in the GPX file. The most popular format for these extension was created by Garmin, it is also supported by a variety of other software/websites (including Strava). I am not sure whether Strava actually uses the laps or pauses recorded on the device, I suspect it will recalculate them anyway, based on the GPS points and time.Īs standard, GPX does not support heart rate, cadence or power data. Whereas GPX is essentially just a series of points (with timestamps). Also they support pauses, if you want to stop the activity at one point, then start again later. So your device could record a new lap whenever you press the lap button, or automatically after a set distance, eg every 1km. The application works with the current versions of Chrome, Firefox, Safari, Edge and Opera.TCX and FIT are designed for fitness activities, so they can contain more fitness data than GPX.Įg TCX or FIT supports laps (splits). There are no adverts, no cookies, no use of local storage, or service workers. You do not need to register to use this application. Your data never leaves your computer as all processing is performed within your browser. Preview the turns by enabling the layer, and choose to include in the FIT file download. The turn information is limited due to being generated solely from the GPX points, and has no knowledge of It is now possible to include basic navigation alerts in the FIT file. I also wanted to see if I could generate the binary file format using JavaScript within the browser. I developed this to simplify the task of converting a GPX for an event into a course I could follow on myĪlthough there are route planning sites that will perform the conversion, I found the results very variable. Download will save the course as a FIT fileĬonnect Garmin as USB device, and place the FIT file in.Amend the average speed to your desired value.View the route on a map, along with the key statistics, and generated turns.A browser based application to convert a GPX file into a FIT file.
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