Developer APIs

Integrate powerful health and fitness calculations into your applications with our comprehensive REST API suite.

API Documentation in Development

Development Status

We're currently building comprehensive API documentation and expanding our endpoint offerings. Some basic endpoints are already available for testing and integration.

Request Early AccessContact Dev Team

Available Now

These endpoints are currently live and ready for integration:

Calculator Info API

Available

Get structured information about available calculators

GET/api/ai/calculator-info
Example: /api/ai/calculator-info?calculator=bmi-calculator

Search API

Available

Search across calculators, blog posts, and learning content

GET/api/search
Example: /api/search?q=bmi&limit=10&type=calculator

Coming Soon

Planned API endpoints and features in our development roadmap:

BMI Calculation API

Q1 2025

Calculate BMI with detailed interpretation and recommendations

/api/calculate/bmi

BMR Calculation API

Q1 2025

Calculate Basal Metabolic Rate using multiple formulas

/api/calculate/bmr

TDEE Calculation API

Q1 2025

Calculate Total Daily Energy Expenditure with activity levels

/api/calculate/tdee

Batch Calculation API

Q2 2025

Process multiple calculations in a single request

/api/calculate/batch

Calculator Widgets API

Q2 2025

Embeddable calculator widgets for third-party sites

/api/widgets

API Features

Lightning Fast

Sub-100ms response times for all calculations

Secure & Reliable

Enterprise-grade security with 99.9% uptime SLA

Global CDN

Worldwide edge locations for optimal performance

Usage Analytics

Detailed insights into API usage and performance

Use Cases

Health & Fitness Apps

  • Integrate BMI calculations into fitness tracking apps
  • Add BMR and TDEE calculations for calorie tracking
  • Provide health insights and recommendations

Healthcare Platforms

  • Patient health screening and assessment tools
  • Automated health metric calculations
  • Integration with electronic health records

API Example

Coming Soon
// Calculate BMI with detailed interpretation
const
response =
await
fetch(
'https://api.freecalculatorshub.com/calculate/bmi'
,
method: 'POST',
headers:
'Content-Type': 'application/json',
'Authorization': 'Bearer YOUR_API_KEY'
,
body: JSON.stringify(
height: 175,
weight: 70,
units: 'metric',
age: 30,
gender: 'male'
)
);

Ready to Build?

Join our developer community and be among the first to access our comprehensive calculation APIs.

Request API AccessContact Dev Team

API documentation and comprehensive endpoints are currently in development. Expected launch: Q1 2025. Contact us for early access and partnership opportunities.