Fitbit

API

API for accessing Fitbit fitness and health data

Overview

The Fitbit API is a RESTful service enabling developers to retrieve user-specific fitness and health data, including activity (steps, calories, workouts), sleep patterns, heart rate zones, weight, and nutrition. It uses OAuth 2.0 for secure authentication, with JSON-formatted responses. Use cases include building apps that sync Fitbit data to wellness platforms, generate personalized insights, track long-term progress, or integrate with health tools. Endpoints cover user profiles, activity logs, sleep stages, device info, and support historical data retrieval and real-time updates where available.

Example Integration (JavaScript)

script.js JS


fetch('https://dev.fitbit.com/')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

RESTful
JSON Support
OAuth 2.0 Auth
Activity & Sleep Data Access
Real-time & Historical Data
Device Integration

Frequently Asked Questions

? Is the Fitbit API free to use?

Yes, it offers free tiers for personal/small-scale apps; enterprise/high-volume use requires paid plans.

? Does it require an API key?

No—uses OAuth 2.0; you need a registered app's client ID and secret for authentication.

? What is the response format?

All responses are in JSON, ensuring easy parsing and integration into most applications.

Top Alternatives

Apple HealthKit API Search Google

Google Fit API Search Google

Strava API Search Google

Tool Info

Pricing Freemium

Category Sports & Fitness

Platform Public API

Pros

⊕ Comprehensive fitness data set
⊕ Well-documented
⊕ Strong community support
⊕ Multi-data category coverage
⊕ Device sync capabilities

Cons

⊖ OAuth 2.0 setup complexity for beginners
⊖ Rate-limited
⊖ Advanced features require paid tiers
⊖ Data access dependent on user consent
⊖ Limited real-time metrics for some data points