Convert your activity files
Free GPX, FIT and TCX converter that runs entirely in your browser. No upload, no account — your data never leaves your device.
Plan your race, aid station by aid station
Drop the course GPX, cut it at your checkpoints and get the time of day you'll reach each one — with the elevation turned into flat-equivalent kilometres and a difficulty factor computed from the real gradient.
- Aid stations read from the file's waypoints, or typed in by hand
- 100 m of climb = 1 km flat, adjustable — plus a Minetti-based factor per leg
- Export to Excel or CSV, and your work is kept in the browser between visits
Race plan & splitsAid-station times, flat-equivalent kilometres, Excel export — or simply edit the time of each split.Create a routeDraw a route on the map and export GPX.Edit a routeMove, add or delete points on an existing route.View an activity on a mapDrop a GPX, FIT or TCX file to see the route and elevation profile.Compare two activitiesTwo routes on one map, with stats side by side.Route heatmapOverlay all your GPX routes on one map.Merge several activitiesRide split across multiple files? Combine them into one activity.Trim an activityCrop the start or end to remove a warm-up or idle time.Edit activity metadataFix the name, sport or date of an activity.Pace plan (grade adjusted)Plan a race pace per km adjusted for the hills.Pace calculatorPace, time or distance — with projected race times.Race fueling plannerCarbs, water and sodium per hour, with a feeding schedule.Repair a corrupted FIT fileWatch died mid-ride? Garmin Connect won't import your file? Recover it here.
100% private
Files are parsed and converted directly in your browser. Nothing is ever uploaded to a server.
All the major formats
Convert freely between GPX, FIT and TCX — the formats used by Garmin, Strava, Wahoo and Coros.
No account, no limits
No sign-up, no email, no file-size cap. Drop a file and download the result instantly.