Simple health calculators, without the fluff
BMI, body fat, calories, hydration, heart rate — the numbers you actually want to know, worked out with the same formulas doctors and researchers use. Type in a few numbers, get an answer right away.
Pick a calculator
What do you want to work out?
Body Composition Report
BMI, body fat and waist-to-hip ratio in one go — enter your measurements once.
BMI Calculator
Your height and weight, turned into a BMI number and category.
Daily Calories
How many calories your body burns at rest and through the day.
Water Intake
A sensible daily water target for your body weight.
Target Heart Rate
The heart-rate zones to aim for when you exercise.
Ideal Weight
A realistic weight range for your height, for reference.
Macro Calculator
Daily protein, carb and fat targets for your goal.
Body Fat
Estimate your body fat percentage with a tape measure.
Waist-to-Hip Ratio
See where your body stores fat, and what that means.
Medical disclaimer: These calculators provide general wellness estimates for informational purposes only. They are not medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional about your individual health and nutrition needs.