Macros (macronutrients) are the three main nutrients your body needs in large amounts: protein, carbohydrates, and fat. Each serves different functions for energy, recovery, and health.

What macro split is best for fat loss?

A common fat loss split is 40% protein, 25% carbs, 35% fat. Higher protein preserves muscle while the calorie deficit drives fat loss.

Should I count macros or calories?

Tracking macros is more effective than counting calories alone because it ensures you get the right balance of nutrients for your goals, not just the right total energy.

How do I track macros?

Use a food tracking app (MyFitnessPal, Cronometer, or MacroFactor). Weigh your food with a digital scale for accuracy. Track consistently for 2-3 weeks to build an intuitive sense of portions. Focus on hitting protein first, then fill carbs and fat to your targets.

Should I eat the same macros on rest days?

For simplicity and consistency, keeping macros the same daily works for most people. Advanced athletes may benefit from carb cycling: higher carbs on training days (especially HYROX or endurance sessions) and slightly lower carbs on rest days, with protein constant.

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Macro Calculator

Get your ideal protein, carb, and fat split based on your body and goals

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This macro calculator determines your ideal daily split of protein, carbohydrates, and fat based on your TDEE, body composition goals, and training style. It calculates grams and calories for each macronutrient to hit your target intake.

Frequently Asked Questions

A high-protein ratio of approximately 40% protein, 30% carbs, 30% fat works well for most people during fat loss. The critical factor is total calorie deficit and protein intake (minimum 2g/kg). Exact ratios matter less than hitting your protein target and maintaining a caloric deficit.

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TDEE Calculator Protein Calculator Body Fat Calculator 75 Hard Meal Plan

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NinjAthlete is a performance optimization platform publishing evidence-based guides on HYROX training, peptide therapy, biohacking, and longevity science. HYROX content is informed by sub-60 competition experience (59:51, HYROX Dallas). Peptide content cites peer-reviewed research with DOI/PubMed links.

Last reviewed: April 2026|Editorial Policy

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