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How does the Fitbit heart rate sensor work?

‎10-30-2023 12:04

‎10-30-2023 12:04

Check out our latest blog for details on how the Fitbit app tracks your heart rate day and night and see tips to get a more accurate reading.

How often do you use the heart-rate feature?

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‎11-04-2023 16:16 - edited ‎11-04-2023 16:18

‎11-04-2023 16:16 - edited ‎11-04-2023 16:18

tl;dr: sensed via photoplethysmography (PPG), the industry norm of wristmounted hearrate-monitors; accuracy optimized by keeping device snug during active exercise [see https://help.fitbit.com/articles/en_US/Help_article/1565.htm#How]; notably, the ⧼Sense⸴Versa⧽ model№s ≧⧼1⸴3⧽ do not offer disengaging the PPG light sensor, and older devices may deviate in readings (i.e.: be less accurate) compared to newer counterparts/options «due to changes in the heart-rate sensors themselves or algorithms».

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