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.
Reference
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Inside our APIs

Here’s where you’ll find detailed technical reference documentation for Fitbit APIs. Fitbit offers three types of APIs for building Fitbit device apps and clock faces:

Device API

Click on any of the links to the left to access detailed technical information.

Settings API

Fitbit developers can make their application configurable by users, by creating application settings.

Companion API

Get detailed technical information about the Fitbit Companion APIs.

Web API

Fitbit provides a Web API for accessing data from Fitbit activity trackers, Aria & Aria 2 scales, and manually entered logs.

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