Macro Calculator
Calculate daily protein, fat, and carb targets based on your calorie goal and fitness objectives.
By Konstantin Iakovlev · Updated September 2026 · Source: National Academies — Dietary Reference Intakes: Macronutrients (RDA and AMDR table)
Protein
200g
800 cal
Fat
67g
600 cal
Carbs
150g
600 cal
Macro Split
Daily Macros
| Protein | 200g (800 cal) |
| Fat | 67g (600 cal) |
| Carbs | 150g (600 cal) |
| Total Calories | 2,000 |
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 is not medical advice. Results are estimates from standard formulas and the numbers you enter. Talk to a doctor or another qualified health professional about your own health before acting on them.
How It Works
Daily targets for protein, fat, and carbohydrate become far easier to hit once you have concrete numbers to aim at, and those numbers shift depending on whether you want to build muscle, lose fat, or hold steady. Dialing in macros keeps your eating aligned with your training instead of leaving it to guesswork, and it reduces the odds of shortchanging any single nutrient. The result is a plan that matches the goal you actually have.
You enter your daily calorie target, so work it out first (a TDEE calculator does that); this tool does not estimate calories itself. The goal you pick sets the split of those calories: Lose Weight uses 40% protein, 35% fat and 25% carbohydrate, Maintain uses 40% protein, 30% fat and 30% carbohydrate, and Gain Muscle uses 35% protein, 30% fat and 35% carbohydrate. Choosing High protein instead fixes protein at 1 gram per pound of body weight and divides the remaining calories between fat and carbohydrate in the goal's ratio. Protein and carbohydrate count as 4 calories per gram and fat as 9.
These figures are a starting point, and how your body responds to a given ratio is individual, so expect to nudge the targets as you gauge your energy, recovery, and results week to week. Micronutrients deserve attention too: building meals around whole, minimally processed foods ensures you take in the vitamins and minerals that a macro count alone never captures.
Example: Athlete's Muscle Gain Plan
- 1 A 180-lb athlete who trains hard has worked out that he needs about 3,200 calories a day to gain muscle. He enters 3,200 calories, picks Gain Muscle and sets Protein Preference to High (1g/lb) with a body weight of 180 lbs.
- 2 Protein: 180 lbs × 1 g = 180 g, or 180 × 4 = 720 calories. That leaves 3,200 − 720 = 2,480 calories.
- 3 Gain Muscle divides fat and carbs 30:35, so fat gets 2,480 × 30/65 = 1,145 calories (÷ 9 = 127 g) and carbohydrate gets 2,480 × 35/65 = 1,335 calories (÷ 4 = 334 g).
- 4 Daily targets: 180 g protein, 127 g fat and 334 g carbohydrate. With Moderate protein the same 3,200 calories would be split 35/30/35 instead, giving 280 g protein, 107 g fat and 280 g carbohydrate.
Source: National Academies — Dietary Reference Intakes: Macronutrients (RDA and AMDR table) · Last updated: September 2026
Frequently Asked Questions
How do I calculate my macros for weight loss?
How much protein do I need per day?
What is the best macro ratio for muscle gain?
You might also need
HSA Calculator 2026 — Contribution Limits & Triple Tax Savings
Calculate HSA tax savings, investment growth, and projected balance at retirement. See the triple tax advantage in action. Based on 2026 IRS contribution limits.
BMI Calculator — Body Mass Index, Category & Healthy Range
Calculate your Body Mass Index (BMI) from height and weight. See your BMI category, healthy weight range, and what it means. Free, instant results with chart.
Calorie Calculator (TDEE)
Calculate daily calories for maintenance, weight loss, or gain using the Mifflin-St Jeor equation and your activity level.