Basic BMI Calculator API

Basic BMI Calculator API

The Basic BMI Calculator API is a powerful and easy-to-use tool designed to calculate an individual's Body Mass Index based on their height and weight.

About the API:  

Developed to facilitate health and fitness applications, this API provides a straightforward and efficient way to obtain crucial health metrics, making it an invaluable asset for developers and healthcare professionals alike.

The primary function of the Basic BMI Calculator API is to calculate a person's Body Mass Index. BMI is a widely used metric to assess whether an individual is within a healthy weight range for their height. To use the API, developers can submit requests with height and weight data in metric units (kilograms and meters). The API then processes the data and returns the BMI value, along with an indication of the corresponding weight category (e.g., underweight, normal, overweight, or obese).

The API is designed with simplicity and ease of integration in mind. Developers can seamlessly incorporate it into their web or mobile applications, fitness trackers or electronic health record systems.

The Basic BMI Calculator API is designed to ensure accuracy and reliability. The underlying algorithm is based on the standard BMI formula: BMI = weight (kg) / (height (m) * height (m)).

The Basic BMI Calculator API is hosted on a scalable and robust infrastructure, allowing it to handle a large number of requests efficiently. With minimal downtime and high availability, the API ensures uninterrupted service for users and applications, making it the ideal choice for critical, high-traffic healthcare platforms.

The API is accompanied by comprehensive documentation that provides detailed instructions on how to implement and use its functions effectively. In addition, developers can access technical support, which ensures a smooth integration process and resolves any queries promptly.

In conclusion, the Basic BMI Calculator API is a versatile and valuable tool for developers and healthcare professionals looking to integrate BMI calculations seamlessly into their applications. With its accuracy, security and customization options, this API is a critical component in promoting health awareness and helping people make informed decisions about their weight and overall wellness.


What this API receives and what your API provides (input/output)?

It will receive parameters and provide you with a JSON.


What are the most common uses cases of this API?

  1. Health and fitness applications: Integration of the API into health and fitness applications allows users to easily calculate their BMI and monitor their weight status, providing personalized health recommendations based on the results.

  2. Electronic health record (EHR) systems: Healthcare providers can include BMI Calculator functionality in EHR systems to track changes in patients' BMI over time, enabling better management of their overall health.

  3. Wellness websites: Wellness websites can offer visitors the option to calculate their BMI as part of health assessment tools, promoting health awareness and encouraging visitors to adopt healthier lifestyles.

  4. Weight loss programs: Weight loss programs can use the API to track participants' BMI progress and offer personalized weight loss strategies and diet plans based on the calculated BMI.

  5. Personal fitness trackers: Fitness wearables and mobile apps can incorporate the API to complement their existing functions, providing users with more comprehensive health data.

Are there any limitations to your plans?

15 requests per second in all plans.

API Documentation


To use this endpoint you must indicate the weight and a height in the parameters.


BMI Metric - Endpoint Features
Object Description
kg [Required]
cm [Required]
Test Endpoint




curl --location --request GET '' --header 'Authorization: Bearer YOUR_API_KEY' 


To use this endpoint you must indicate the weight and a height in the parameters.


BMI Imperial - Endpoint Features
Object Description
lbs [Required]
inches [Required]
Test Endpoint


                                                                                                                                                                                                                            {"bmi":1.7027681660899652,"height_in_inches":170,"weight_in_lbs":70,"bmiCategoryForAdults":{"category":"Underweight","range":"0 - 18.5","normalRange":"18.5 - 25"}}


curl --location --request GET '' --header 'Authorization: Bearer YOUR_API_KEY' 


API Access Key & Authentication

After signing up, every developer is assigned a personal API access key, a unique combination of letters and digits provided to access to our API endpoint. To authenticate with the Basic BMI Calculator API REST API, simply include your bearer token in the Authorization header.


Header Description
Authorization [Required] Should be Bearer access_key. See "Your API Access Key" above when you are subscribed.

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Zyla provides a wide range of integration methods for almost all programming languages. You can use these codes to integrate with your project as you need.

To use this API the user must indicate a height and weight.

The Basic BMI Calculator API is a powerful and easy-to-use tool designed to calculate the Body Mass Index (BMI) of an individual based on their height and weight.

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