Open a walking .fit file — steps, and why totals double-count
A walk is simple to record and easy to double-count, because the same steps can appear in both an activity file and an all-day total.
Open your file
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a .fit file from a watch or bike computer
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One walk, two records
Start a walk as an activity and your watch writes a dedicated .fit file for it. But the watch’s all-day step tracking was already counting those same steps into your daily total. Add the activity file’s steps to the day’s figure and you count the walk twice — the FIT version of adding an iPhone’s and a Watch’s step counts. The activity file is a detailed record of a slice the daily total already contains, not extra steps.
What a walking file actually adds
What the activity file gives that the daily total does not is structure: a start and end, a GPS track if outdoors, per-second heart rate, and cadence. That is the reason to open it — to see the shape of one walk — rather than to re-total your steps, which it will only inflate.
What you get from this page
This page reads your walking file on your device and shows its steps, track and heart-rate fields, framed as one activity’s detail rather than a figure to add to anything — so the double-count never happens here.
In the corpus this tool is tested against, 564 activities resolved to this sport. See the full activity-type list for every sport a .fit file can declare, and open any .fit file whatever its sport.