Macro Calculator for Diet and Nutrition
Macro Calculator
Macro Calculator
• Exercise: 15-30 minutes of elevated heart rate activity
• Intense exercise: 45-120 minutes of elevated heart rate activity
• Very intense exercise: 2+ hours of elevated heart rate activity
The macro calculator breaks your daily calorie target into protein, carbohydrate, and fat grams based on your goal and body weight. It calculates your recommended macronutrient split for fat loss, muscle gain, or maintenance.
Macro Calculation Method
Protein calories = Protein grams x 4 Fat calories = Fat grams x 9 Carb calories = Total calories - Protein calories - Fat calories Carb grams = Carb calories / 4
Example: 2,000 kcal, 160g protein, 60g fat. Protein = 640 kcal. Fat = 540 kcal. Carbs = (2,000-640-540)/4 = 205g.
Recommended Macro Ranges by Goal
| Goal | Protein | Fat | Carbohydrates |
|---|---|---|---|
| Fat loss | 30-35% | 25-35% | 30-45% |
| Maintenance | 25-30% | 25-35% | 40-50% |
| Muscle gain | 25-30% | 20-30% | 40-55% |
| Keto / low-carb | 25-35% | 60-75% | 5-10% |
Protein Target by Body Weight and Goal
| Bodyweight | Sedentary (0.8g/kg) | Active (1.6g/kg) | High (2.2g/kg) |
|---|---|---|---|
| 60 kg / 132 lb | 48g | 96g | 132g |
| 75 kg / 165 lb | 60g | 120g | 165g |
| 90 kg / 198 lb | 72g | 144g | 198g |
Counting Macros vs. Counting Calories
Calorie counting tracks total energy. Macro counting tracks protein, fat, and carbs separately. Macros give more control over body composition because protein and carbs affect muscle, energy, and hunger differently. Tracking macros requires more effort but is the approach used by athletes and physique-focused individuals.
Frequently Asked Questions
How do I calculate my macros for fat loss?⌄
Start with your TDEE minus a deficit (300-500 calories). Set protein at 1.8-2.2g per kg of bodyweight. Set fat at 0.8-1.0g per kg. Fill remaining calories with carbohydrates. This calculator does all the steps once you enter your weight, goal, and activity level.
What is the best macro split for muscle gain?⌄
A common starting point is 30% protein, 25% fat, and 45% carbohydrates at a surplus of 200-300 above TDEE. High carbohydrate intake supports training performance. Adjust based on your response after 4-6 weeks.
How many grams of protein do I need per day?⌄
For most active people building or maintaining muscle, 1.6-2.2g per kg of bodyweight per day is the evidence-supported range. For a 75 kg person, that is 120-165g per day. Sedentary individuals need about 0.8g per kg.
What is the difference between macros and calories?⌄
Calories measure total energy. Macros are the three main nutrient categories: protein (4 kcal/g), carbohydrates (4 kcal/g), and fat (9 kcal/g). All calories come from macros. Tracking macros gives both the calorie total and the nutrient breakdown.
Do I need to track macros to lose weight?⌄
No. Simple calorie tracking or portion control can produce fat loss without strict macro tracking. However, tracking protein specifically tends to improve results because high protein preserves muscle and reduces hunger during a deficit.