Best Alternatives to BMI Calculator APIs for 2025

As we move into 2025, the demand for health-related APIs continues to grow, particularly for those focused on calculating body mass index (BMI) and other health metrics. While the BMI Calculator API has been a popular choice, there are several alternatives that offer unique features and capabilities. In this blog post, we will explore the top BMI Calculator API alternatives, detailing their functionalities, pricing, pros and cons, ideal use cases, and how they differ from the BMI Calculator API.

1. Calculate Health Metrics API

The Calculate Health Metrics API is a cutting-edge software solution designed to provide comprehensive health metrics calculations for various health-related applications. This API is particularly useful for developers looking to integrate advanced health analytics capabilities into their software.

Key Features and Capabilities

One of the standout features of the Calculate Health Metrics API is its ability to accurately calculate a wide range of health metrics, including body mass index (BMI) and body fat percentage. The API processes these metrics using advanced algorithms that adhere to industry-standard guidelines, ensuring reliable results.

Get BodyFat

This feature calculates the body fat percentage based on parameters such as sex, age, height, and weight. Users can choose between metric or imperial units for their calculations.

{"age":29.0,"bmi":"21.1 kg/m²","bodyfat":"26.59 %","bodyfat_status":"Average","gender":"female","height":"1.6 m","weight":"52.0 kg"}

In this response, the fields indicate the user's age, calculated BMI, body fat percentage, body fat status, gender, height, and weight. This data can be utilized to generate health reports and provide personalized wellness recommendations.

Get BMI

To use this feature, users simply need to input their height and weight, and they can also select between metric or imperial units.

{"bmi":"31.2 kg/m²","height":"1.6 m","weight":"80.0 kg","weight_status":"Obese"}

The response includes the calculated BMI, height, weight, and weight status, which can be integrated into health and fitness applications for tracking BMI and assessing health risks.

Pros and Cons Compared to BMI Calculator API

Pros:

• Offers additional metrics like body fat percentage.
• Flexible input options for different measurement systems.

Cons:

• May require more complex integration due to additional features.

Ideal Use Cases

This API is ideal for health and fitness applications, telehealth services, and employee wellness programs, where comprehensive health metrics are essential for monitoring and assessment.

How It Differs from BMI Calculator API

While the BMI Calculator API focuses solely on BMI calculations, the Calculate Health Metrics API provides a broader range of health metrics, making it more versatile for developers looking to offer comprehensive health analytics.

Need help implementing Calculate Health Metrics API? View the integration guide for step-by-step instructions.

2. Distance Calculator API

The Distance Calculator API is a tool that computes the distance between two sets of coordinates, expressed in latitude and longitude. This API is particularly useful for applications that require accurate distance data for mapping, navigation, and logistics.

Key Features and Capabilities

This API allows developers to integrate distance calculations into their applications with ease. Users simply input the latitude and longitude coordinates of two locations, and the API returns the distance between them in the unit of their choice, such as miles or kilometers.

Calculator

This feature calculates the distance between two coordinates.

{"statusCode":200,"body":{"distance":{"meters":189.7602141814502,"kilometers":0.1897602141814502,"miles":0.1179118235931812}}}

The response includes the distance in meters, kilometers, and miles, which can be utilized in applications for route optimization, travel planning, or fitness tracking.

Pros and Cons Compared to BMI Calculator API

Pros:

• Highly customizable with options for different units of measurement.
• Useful for a variety of applications beyond health metrics.

Cons:

• Not focused on health metrics, which may limit its use in health-related applications.

Ideal Use Cases

This API is ideal for mapping applications, logistics for optimizing delivery routes, and fitness apps for tracking workout distances.

How It Differs from BMI Calculator API

The Distance Calculator API focuses on geographical distance calculations, while the BMI Calculator API is specifically designed for health-related metrics, making them suitable for different application domains.

Looking to optimize your Distance Calculator API integration? Read our technical guides for implementation tips.

3. Measurement Unit Conversion API

The Measurement Unit Conversion API allows users to convert various measurement units programmatically. This API is particularly useful for applications that require unit conversions for clarity and accuracy.

Key Features and Capabilities

This API provides a comprehensive list of supported measurement units and allows users to convert any unit to another, making it fast, simple, and reliable.

List of Units

This feature provides all the measurements available for conversion.

["acceleration","angle","apparentPower","area","charge","current","digital","each","energy","force","frequency","illuminance","length","mass","massFlowRate","pace","partsPer","pieces","power","pressure","reactiveEnergy","reactivePower","speed","temperature","time","voltage","volume","volumeFlowRate"]

The response includes a comprehensive list of all supported measurement units, which can be utilized in applications that require unit conversions for various categories.

Converts Units

This feature allows users to specify a measure, a base unit, and a unit to convert, along with a value.

{"value":"90.7185","abbreviation":"kg"}

The response indicates the converted value and its abbreviation, which can be integrated into applications for real-time conversions and generating reports with varied units.

Pros and Cons Compared to BMI Calculator API

Pros:

• Supports a wide range of measurement units across various categories.
• Ideal for applications that require frequent unit conversions.

Cons:

• Not specifically focused on health metrics, which may limit its applicability in health-related applications.

Ideal Use Cases

This API is ideal for developing converter applications, generating reports with multiple measurement units, and facilitating data analysis where unit conversions are necessary for clarity.

How It Differs from BMI Calculator API

The Measurement Unit Conversion API focuses on unit conversions across various categories, while the BMI Calculator API is specifically designed for calculating BMI and related health metrics, making them suitable for different application needs.

Need help implementing Measurement Unit Conversion API? View the integration guide for step-by-step instructions.

Conclusion

In conclusion, while the BMI Calculator API remains a strong choice for calculating body mass index, the alternatives discussed here offer unique features that may better suit specific needs. The Calculate Health Metrics API is ideal for comprehensive health analytics, the Distance Calculator API excels in geographical calculations, and the Measurement Unit Conversion API provides versatile unit conversion capabilities. Depending on your application requirements, one of these alternatives may serve as the best fit for your development needs in 2025.