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Health Calculators

The health section of The Calculator Site containing a collection of useful health calculators for body mass index (BMI), basal metabolic rate (BMR) and pregnancy due date, as well as some for fitness.

BMI Calculator

Use the metric and imperial BMI calculators to work out your body mass index (BMI). By calculating your body mass index, you can get an indication of whether your weight may be affecting your health.

BMR Calculator

Would you like to know how many calories you burn on a daily basis? Use our metric and imperial BMR calculators to determine both your daily inactive calorie burn and your daily calorie burn based upon your activity level.

How Long to Walk a Mile

Discover how long it might take you to walk a mile at a relaxed, moderate, brisk or fast pace, and the reasons your speed might decrease with age.

How Many Steps Are in a Mile?

Find out how many steps it takes to walk or run a mile for your biological sex, height and walking speed.

Kilojoules to Calories Converter

Convert between kilojoules to calories or calories to kilojoules to work out how much energy is in the food you're eating.

Pregnancy Calculator

Use this pregnancy calculator to estimate your due date, your remaining length of pregnancy, your probability of giving birth on certain dates and how big your baby currently is.

Sobriety Calculator

Use this calculator to calculate the number of days, weeks, months, and years you've been sober.

Steps to Km Calculator

Calculate how many km you've walked or run for a set number of steps using this calculation tool.

Steps to Miles Calculator

Use this calculator to work out how many steps there are in a mile for your height and pace. In addition, find out how many miles you've walked or run for a set number of steps.

WHR Calculator

Work out your waist-to-hip ratio (WHR) with this calculator tool. Your WHR number can help you determine which body shape category you fit into and suggest whether you might be in a low, medium or high risk health category.

Note: The health calculators featured in this section are provided for guide purposes only. It is recommended that you speak to a qualified Doctor or health professional for advice and guidance before making any dramatic changes to your lifestyle.