BMI Information API

BMI Information API

The BMI Information API is a powerful and intuitive tool designed to accurately calculate Body Mass Index (BMI) based on height and weight inputs.

About the API:  

The BMI Information API is designed for health and fitness applications, offering a simplified method for accessing crucial health metrics. An essential part of its functionality is the calculation of Body Mass Index (BMI), a widely recognized measure of healthy weight based on height and weight. Users can enter metric units (kilograms for weight and meters for height) to obtain the BMI value and determine the corresponding weight category (e.g., underweight, normal, overweight or obese).

Designed for seamless integration, the API is easy to use, allowing developers to effortlessly incorporate BMI calculations into web and mobile applications, fitness trackers and electronic health record systems.

Hosted on a scalable infrastructure, the API efficiently handles large volumes of requests with minimal downtime, ensuring continuous service availability. This reliability is particularly advantageous for healthcare platforms that require reliable BMI calculations.

Accompanied by comprehensive documentation, the API provides detailed implementation guidelines and solid technical support, facilitating smooth integration and quick resolution of any implementation issues.

In essence, the BMI Information API is a versatile and essential tool for integrating BMI calculations into applications. Its accuracy, reliability and supporting infrastructure help to promote health awareness and enable informed decisions regarding 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


                                                                                                                                                                                                                            {"bmi":27.343749999999996,"height_in_cm":160,"weight_in_kg":70,"bmiCategoryForAdults":{"category":"Overweight","range":"25 - 30","normalRange":"18.5 - 25"}}


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 BMI Information 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 BMI Information 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.

This API is essential for anyone interested in monitoring or assessing their health and fitness levels. It provides accurate calculations of key body indices, aiding in maintaining a healthy lifestyle and tracking progress over time.

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