Support for the legacy Fitbit Web API ends on September 30, 2026
Important: Support for the legacy Fitbit Web API ends on September 30, 2026. After this date the API will continue to operate, but Google will no longer fix bugs or provide API support. On October 30, 2026, the Fitbit Web API will be turned off and will no longer function or sync data to or from Fitbit users. To continue accessing data for your users after this date, migrate to the Google Health API.
Heart Rate Variability
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Heart Rate Variability

The Heart Rate Variability (HRV) endpoints are used for querying the user’s heart rate variability data.

Developers can request the following API endpoints when integrating the HRV data type:

If your application has been granted intraday access, the following endpoints can be used. See Intraday.