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.
Blood Oxygen Saturation (SpO2)
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Blood Oxygen Saturation (SpO2)

SpO2 (Oxygen Saturation) is a measurement of your blood oxygen level. The Fitbit devices use body sensors to record the percentage, average, as well as the minimum and maximum levels of oxygen circulating in your blood while you’re asleep. This allows you to better monitor your vitals and general health throughout the day.

Developers can use the following API endpoints when integrating the SpO2 data type:

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