You ran a Google Takeout export and now have a ZIP full of JSON files. Now what? Wearable Converter takes your Takeout ZIP as input and produces clean CSV output, ready for whatever you actually wanted the data for.
Google Takeout is the right way to get your data out of any Google product, including Fitbit and Google Health. It's thorough, complete, and free. It also dumps everything as raw JSON, which is honest of Google but not useful for most people.
This page is for everyone who just finished a Takeout export and needs to convert that output into something usable. It works whether you're still calling it Fitbit or you're post-rebrand on Google Health.
Same Takeout export, two reasonable destinations.
You're moving to a Garmin device and want your full history imported. The converter outputs Garmin's exact CSV format, year-split, ready to upload via Garmin Connect's import tool.
Garmin migration →You're not migrating to a Garmin, you just want the data out of Google's walls. Branded XLSX workbook plus clean year-split CSV files in one download.
Spreadsheet export →If you've unzipped the Takeout archive, you've seen the structure. Inside is a folder called Fitbit/ (still named that, even after the Google Health rebrand). Inside that, sub-folders for each data type: Physical Activity, Body, Sleep, Heart Rate, and so on.
Each sub-folder contains JSON files, usually one per year or one per month, depending on the data type and how long you've had the device. For an active user with 5+ years of data, the unzipped folder can contain hundreds or thousands of files.
The converter only needs the Takeout ZIP itself, you don't have to unzip it first. It reads the structure directly, extracts the right files, and outputs clean CSV.
Takeout exports are point-in-time snapshots. If your last export was a few weeks old, it won't include recent activity. For best results, request a fresh export shortly before running the converter.
This direct link opens Takeout with Fitbit pre-selected, which saves you scrolling through the full list of Google products. Tick the data types you want, request the export, and wait for the email (usually a few minutes to an hour, depending on the size of your account).
The converter automatically excludes the last 3 days of any export. Fitbit syncs data to Google's servers in batches, and the most recent few days are often only partially synced at export time. Excluding them prevents incomplete days from being treated as zero-activity days.
Same problem, different framings. Helpful if your specific search query isn't quite this one.