Health Calculators

Calculators for everyday health and fitness numbers, starting with how many Calories your body burns at rest and how much you need to eat to keep your weight steady. Each one uses a published equation, shows it with your numbers, and says which equation it used, so you can compare it with a figure from a dietitian, an app or a fitness tracker.

These equations describe the average adult. Your own body can be 10% or more either side of the estimate, and none of them can account for pregnancy, medical conditions or medicines that change your metabolism. Treat the results as a starting point for planning, not a diagnosis, and talk to a doctor or registered dietitian before making big changes to how you eat or exercise.

Key formulas