Calculate Your Macros

Macronutrients are the three main categories of nutrients your body needs in large quantities: protein, carbohydrates, and fat. Each serves different roles in the body. Protein builds and repairs muscle tissue, carbohydrates provide quick energy for the brain and muscles, and fat supports hormone production, cell membrane structure, and absorption of fat-soluble vitamins. Getting the right balance is crucial for achieving your fitness and health goals.

When you select a weight loss goal, the calculator subtracts 500 calories from your TDEE, creating a deficit that typically leads to about 0.5 kg (1 lb) of weight loss per week. For weight gain, it adds 500 calories to support muscle growth with minimal fat gain. These adjustments follow evidence-based recommendations from sports nutrition research and are considered safe and sustainable for most adults.

The ideal macro ratio depends on your activity level, body composition goals, and personal preferences. A balanced 40/30/30 split works well for general fitness. Athletes and bodybuilders often benefit from higher protein intakes (35-40% of calories) to support muscle recovery and growth. Ketogenic diets use extremely low carb ratios (5%) to shift the body into fat-burning ketosis. Experimenting with presets and tracking results over 2-4 weeks helps you find the ideal ratio.

Start by planning protein-rich meals first since protein is the hardest macro to hit consistently. Then fill in carbohydrates around your workouts for optimal energy and recovery. Add healthy fat sources like olive oil, nuts, and avocado to reach your fat target. Use a food tracking app for the first few weeks to build awareness of portion sizes. Over time, you will develop an intuitive sense for how much to eat without constant measuring.