Free tool

Calorie deficit calculator

Estimate the calories you burn on an average day, and a safe range to eat in if your goal is weight loss. Nothing you enter leaves your browser.

This is an educational estimate, not medical advice. The figures come from a standard population formula (Mifflin-St Jeor) and cannot account for your medical history, medications, body composition or lab results. They are not a diagnosis, not a treatment plan, and not a prediction of results. Do not start, stop or change a diet, a medication or an exercise routine based on this page — talk to a licensed clinician first, especially if you are pregnant or breastfeeding, are under 18, have an eating disorder or a history of one, or manage a condition such as diabetes, kidney, liver, heart or thyroid disease. Klarvia does not store or transmit anything you type here; every calculation happens in your browser.