Macro Calculator

Calculate your daily protein, carbohydrate, and fat targets based on your calorie goal and fitness objective. Get a complete macro breakdown for cutting, bulking, or maintenance.

Part of our Health Calculators collection.

Macro Calculator

Free online calculator

Use the Calorie Calculator to find your TDEE first

Used to verify protein is adequate (0.7–1g per lb)

Results update automatically as you type

How to Use This Calculator

  1. 1

    Enter your daily calorie target (use the Calorie / TDEE Calculator first if you don't know it).

  2. 2

    Select the diet style that matches your approach.

  3. 3

    Enter your body weight so the calculator can flag if protein is adequate.

  4. 4

    Get your exact daily gram targets for protein, carbs, and fat.

How Macros Are Calculated

Macros are distributed as percentages of total calories:

Protein:      4 calories per gram
Carbohydrates: 4 calories per gram
Fat:           9 calories per gram

Example (Balanced, 2,200 cal):
Protein  = 2,200 × 0.30 / 4 = 165g
Carbs    = 2,200 × 0.40 / 4 = 220g
Fat      = 2,200 × 0.30 / 9 = 73g

Example Calculation

Example: 2,200 calories, high protein diet, 175 lbs

Inputs

calories: 2200dietStyle: high_proteinbodyWeightLbs: 175

Result

Protein: 220g | Carbs: 165g | Fat: 73g

High protein split (40P/30C/30F): 2,200 × 0.40 / 4 = 220g protein; × 0.30 / 4 = 165g carbs; × 0.30 / 9 = 73g fat.

Frequently Asked Questions

How much protein do I actually need?
Research consistently shows 0.7–1.0g of protein per pound of body weight is optimal for muscle building and retention. Sedentary people need less (0.36g/lb minimum), but higher protein helps with satiety when dieting.
Do macros matter more than calories?
Calories determine weight change; macros determine body composition. You can lose weight eating only candy in a calorie deficit, but your macro split affects how much is fat vs muscle.
What is keto?
Ketogenic diet restricts carbs to under 50g/day (typically 5% of calories) forcing the body into ketosis — using fat as primary fuel. It's effective for some people but requires strict adherence and may not be sustainable long-term.

Last updated: