RMR
Resting Metabolic Rate (RMR) Calculator
Estimate the calories your body needs at rest, plus your total daily energy expenditure (TDEE) based on activity level. Uses the Mifflin–St Jeor equation.
The calories your body burns at complete rest to keep essential functions running — breathing, circulation, cell production, and temperature regulation.
Your RMR plus calories burned through daily activity and exercise. Eating roughly this many calories per day should maintain your current weight.
A 500 kcal/day deficit targets roughly 1 lb (0.45 kg) of weight loss per week. As a general guideline, don't drop below 1,200 kcal/day for women or 1,500 kcal/day for men without medical supervision.
Heads up: Your calculated weight-loss target is below the general safe minimum. Consider a smaller deficit (e.g., TDEE − 250) or speak with a healthcare professional before reducing your intake further.
Daily calories by activity level
| Activity level | kcal/day |
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Note: This is an estimate using the Mifflin–St Jeor equation. Actual energy needs vary based on body composition, genetics, and health conditions. This calculator is for general information only and is not medical advice. Consult a qualified healthcare professional before making significant changes to your diet or exercise routine.