7 Essential Health & Fitness Calculators You Need

Stay on top of your fitness goals with these powerful fitness calculators

  • Created by Lisa Johnson
  • Reviewed by Ramesh Agarwal

Table of Contents

Keeping track of your health has never been easier than it is today with the help of modern technology. There are a number of different apps and digital health calculators that you can use to keep track of your weight, how many calories you're consuming, burning and more.

In this article, we will look at some of the best health calculators and how they can help your health & fitness goals.

1. BMI Calculator

The body mass index is a great way to measure your body's composition and health. Using a BMI calculator will allow you to measure your body fat percentage and determine what you should do to improve your body. BMI is a measure of body weight based on height. It is used to indicate if you are underweight, normal weight, overweight or obese.

Many doctors and health specialists carry out the BMI test for their patients on a regular basis. It isn't the most accurate test at understanding your body composition as the results will vary based on muscle mass. However, it is a useful way to get a broad understanding of your health and fitness levels.

Try the BMI calculator now - it's completely free with instant results!

Calculate your BMI

2. BMR Calculator

The basal metabolic rate is not as well known as the body mass index. In fact, I'm willing to bet that most people don't even know what their BMR is. It's a pretty important number to know though. I mean, if you don't know how many calories your body burns while at rest, how are you supposed to know how many calories you should be eating to maintain your current weight, or how many calories you need to reduce to lose weight?

It's a super important number that determines a lot about your metabolism and your overall health. So if you're interested in finding out what your BMR is and how to use it to track your health, here's a great little calculator that will tell you everything you need to know.

Try the BMR calculator now - it's completely free with instant results!

Calculate your Basal Metabolic Rate

3. Body Fat Percentage Calculator

Every fitness enthusiast out there has at one point or another, wondered how much of their body is fat. While there are many ways to measure your body fat percentage, one of the most common ways is to use a body fat calculator.

Body fat calculators are simple tools that you can use to calculate your body fat percentage. Most of them are easy to use, and they don't require anything more than your weight and some basic measurements.

Try the Body Fat Percentage Calculator now - it's completely free with instant results!

Calculate your Body Fat Percentage

4. Calorie Calculator

A calorie calculator helps you to work out how many calories you need to consume each day to maintain your current weight. The calorie calculator and the BMR calculator are actually very similar in how they operate. However, the key difference is that the calorie calculator also takes into account your daily activity levels. This is important as we all burn calories at different rates based on the type of work we do and our day to day lifestyle.

If you're calculating your daily calorie intake, a calorie calculator can make the process a lot easier, especially if you're not sure how much you should be eating. By entering your age, weight, height, gender and activity level, you'll be given an estimate of the number of calories you should eat each day to maintain your current weight, lose weight or gain weight.

The calculator is useful to help you calculate your daily calorie needs. You can then use this figure to create a healthy eating plan or to get a better understanding of how many calories you need to reach your health and fitness goals.

Try the Calorie Calculator now - it's completely free with instant results!

Calculate your Calorie Intake

5. Waist-to-height Ratio Calculator

The waist-to-height ratio (WHtR) is a simple way to determine whether your weight is healthy or not. The WHtR is a lot more useful than just looking at your body mass index (BMI), especially for people with a lot of muscle and body fat.

It is much more accurate at determining whether you are at a healthy weight. It is also a lot easier to calculate. Try out the waist to height ratio calculator for yourself and see how your WHtR measures up.

Try the Waist to Height Ratio Calculator now - it's completely free with instant results!

Calculate your Waist to Height Ratio

6. Waist-to-hip Ratio Calculator

It is not easy to calculate your waist-to-hip ratio by hand, so here is a simple waist-to-hip ratio calculator to help you out. It is very important to measure your waist-to-hip ratio because it can be a good indicator of your health and fitness.

Having a healthy waist-to-hip ratio can be a good indicator of overall health, but having a large waist circumference compared to hips can be an indicator of other health risks as well, such as type 2 diabetes.

Try the Waist to Hip Ratio now - it's completely free with instant results!

Calculate your Waist to Hip Ratio

7. Leg-to-body Ratio Calculator

The leg-to-body ratio (LBR) is a number that is used to indicate how healthy a person's weight is. The LBR is a comparison of the circumference of your waist versus the circumference of your hips. The LBR is calculated by dividing the waist size by the hip size. The measurement is usually taken in inches, but it can be measured in any unit of length.

To do this you simply need to:

  • Measure your waist circumference (at the narrowest point)
  • Measure your hip circumference (at top of the buttocks)
  • Divide the waist size by the hip size to get the result

We recommend using a leg-to-body ratio calculator to make the process easier and more accurate.

Try the Leg to Body Ratio now - it's completely free with instant results!

Calculate your Leg to Body Ratio


Health calculators are important tools that help you understand your health and help you stay on your path to becoming healthy. In this post, we have covered a few of the health calculators that are available today on the web.

We hope that you were able to find a calculator that works for you and your health and fitness needs.