Macro Calculator

Calculate daily protein, fat, and carb targets based on your calorie goal and fitness objectives.
kcal
Goal
Protein Preference

Protein

200g

800 cal

Fat

67g

600 cal

Carbs

150g

600 cal

Macro Split

Protein40%
Fat30%
Carbs30%

Daily Macros

Protein200g (800 cal)
Fat67g (600 cal)
Carbs150g (600 cal)
Total Calories2,000

Use the Macro Calculator above to calculate your results. Enter your values and see instant results — all calculations run in your browser.

Disclaimer: This calculator is for informational purposes only and does not constitute tax, financial, or legal advice. Results are estimates based on the information you provide and current rates. Always consult a qualified tax professional or financial advisor for advice specific to your situation.

How It Works

Our 2026 Macro Calculator helps you precisely determine your daily protein, fat, and carbohydrate targets. This is crucial for optimizing your nutrition whether you're aiming for muscle gain, fat loss, or maintenance, ensuring your diet aligns perfectly with your fitness aspirations. Understanding your macros prevents nutritional deficiencies and maximizes your training efforts, reflecting the latest scientific understanding of dietary needs.

This calculator utilizes a two-step approach: first, it estimates your Basal Metabolic Rate (BMR) using the Mifflin-St Jeor equation, then multiplies it by an activity factor to determine your Total Daily Energy Expenditure (TDEE). From your TDEE and chosen fitness goal (e.g., a 20% caloric deficit for fat loss, or a 15% surplus for muscle gain), it allocates macronutrients based on widely accepted ratios: typically 0.8-1.0 grams of protein per pound of body weight, 20-30% of total calories from fat, and the remainder from carbohydrates.

While our calculator provides excellent starting points, remember that individual responses to macronutrient ratios can vary. Don't be afraid to adjust your targets slightly based on how you feel, your energy levels, and your progress. A common mistake is neglecting micronutrients; always prioritize whole, unprocessed foods to ensure you're getting essential vitamins and minerals alongside your macros.

Example: Athlete's Muscle Gain Plan

  1. 1 A 30-year-old male athlete, weighing 180 lbs (81.6 kg) and 5'10" (178 cm) tall, exercises vigorously 5 times a week and wants to gain muscle. He wants a 15% caloric surplus.
  2. 2 Using the Mifflin-St Jeor equation, his BMR is calculated. This BMR is then multiplied by an activity factor of 1.725 (vigorous exercise 5 times/week) to get his TDEE. For muscle gain, a 15% surplus is added to his TDEE. Protein is set at 1.0g/lb body weight, fat at 25% of total calories, and carbs make up the rest.
  3. 3 Based on these calculations, his daily targets are: 3200 calories, 180g protein, 89g fat, and 400g carbohydrates.
  4. 4 This macro breakdown provides sufficient protein for muscle repair and growth, adequate fats for hormone production and overall health, and ample carbohydrates to fuel intense workouts and replenish glycogen stores, supporting his muscle gain objective effectively.

Source: CDC · Last updated: April 2026

Frequently Asked Questions

How do I calculate my macros for weight loss?
Start with a calorie deficit of 500 below your TDEE. A common split for weight loss is 40% protein, 30% carbs, 30% fat. For a 1,800-calorie diet, that equals 180g protein, 135g carbs, and 60g fat.
How much protein do I need per day?
For general health, 0.36g per pound of body weight is the minimum. For muscle building or fat loss, aim for 0.7-1.0g per pound. A 180-lb person focused on fitness should target 126-180g of protein daily.
What is the best macro ratio for muscle gain?
A common muscle-building split is 30-35% protein, 40-50% carbs, and 20-25% fat with a slight calorie surplus (200-500 above TDEE). Adequate carbs fuel workouts while protein supports muscle repair and growth.

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