Nutrition
Calorie Calculator
Estimate the calories you need each day to lose, maintain or gain weight.
How the Calories calculator works
Estimate the calories you need each day to lose, maintain or gain weight.
Every result on MacroMatrixCalc is based on peer-reviewed equations and adjustable for goal, sex, age and activity. Use the form above to update your numbers — results recalculate instantly so you can compare scenarios.
Frequently asked questions
No. Above ~1% of body weight per week, lean-mass loss accelerates and adherence drops.
Recommended products
Curated supplements and gear for this calculator will appear here soon.