Karmaculator

Holistic Health

Macronutrient Calculator

Enter your daily calorie target and choose your goal to get your personalised protein, carbohydrate, and fat targets, in grams and as a percentage of total calories.

Don't know your calorie target? Calculate your TDEE first →

Balanced macros for body recomposition

Protein40% · 200 gCarbs35% · 175 gFat25% · 56 g

Sample Weight Loss split for a 2,000-calorie day. Higher protein protects muscle during a calorie deficit.

Disclaimer

This calculator provides general wellness information only. Results are not medical advice and should not replace consultation with a qualified healthcare professional. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.

4 min read·Holistic Health

What are macronutrients?

Macronutrients are the three categories of nutrients the body needs in large amounts: protein, carbohydrate, and fat. They are called macro to distinguish them from micronutrients such as vitamins and minerals, which the body needs only in trace quantities. Every calorie you eat comes from one of these three sources. Protein and carbohydrate each supply four calories per gram, while fat supplies nine, which is why fat-rich foods are so calorically concentrated.

Tracking macros rather than calories alone gives a clearer view of what food is doing inside the body, not just how much energy it carries. Protein builds and preserves tissue, carbohydrate fuels harder training and clear thinking, and fat supports hormones and the absorption of certain vitamins. The right split depends on your goal. Fat loss generally calls for higher protein to protect muscle while in a calorie deficit, while muscle gain tends to favour moderate protein paired with more carbohydrate to fuel training.

The ratios here are evidence-based starting points, not strict prescriptions. People respond differently to the same split, and the best one for you is the one you can sustain while feeling and performing well. Adjust gradually and judge by results over weeks rather than days.

How the calculation works

The calculator takes your daily calorie target and the goal you select, then applies a goal-specific percentage split before converting each share into grams.

  1. Read the percentage split for your chosen goal. Weight Loss uses 40 percent protein, 35 percent carbohydrate, 25 percent fat.
  2. Multiply your calorie target by each percentage to get the calories assigned to each macro.
  3. Divide protein and carbohydrate calories by 4, and fat calories by 9, to convert calories into grams.
  4. The three gram totals together account for your full daily calorie target, give or take minor rounding.

Worked example: 2,000 calories, Weight Loss goal

  • Protein: 2,000 x 0.40 = 800 cal, divided by 4 = 200 g
  • Carbohydrate: 2,000 x 0.35 = 700 cal, divided by 4 = 175 g
  • Fat: 2,000 x 0.25 = 500 cal, divided by 9 = 56 g
  • Daily target: 200 g protein, 175 g carbohydrate, 56 g fat

Frequently asked questions

How much protein do I actually need?

For people training regularly, current research supports roughly 1.6 to 2.2 grams of protein per kilogram of body weight per day. A 70 kg person training several times a week would land around 112 to 154 grams. Sedentary people need less, closer to 0.8 grams per kilogram for basic maintenance. Protein matters most during a calorie deficit, where keeping it high helps preserve muscle so that weight lost comes more from fat than from lean tissue.

Are carbohydrates necessary?

The body can function without dietary carbohydrate by producing glucose from other sources, which is the basis of ketogenic approaches. That said, carbohydrate is the most efficient fuel for higher-intensity training and supports cognitive function and thyroid health for many people. Necessary is the wrong frame. The better question is how much carbohydrate supports your activity level and helps you train and recover well. Active people generally perform better with more of it.

Should I track macros or just calories?

For weight change alone, total calories are what drive the outcome. Tracking macros adds a second layer that matters for body composition and performance: hitting a protein target protects muscle, and a sensible carbohydrate and fat balance supports training and hormones. If detailed tracking feels unsustainable, a reasonable middle path is to track calories and protein closely and let carbohydrate and fat fall where they may within that budget.

A macro split only works once you know how many calories to divide. The TDEE Calculator gives you that daily target, and the BMR Calculator shows the resting metabolic floor it is built on. To round out your daily routine, the Water Intake Calculator estimates the hydration that supports training and recovery.

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Calories per Gram: The Conversion

Protein and carbohydrates each provide 4 calories per gram. Fat provides 9 calories per gram. This asymmetry explains why fat-dense foods are so calorically concentrated: a tablespoon of olive oil contains about 120 calories, while a tablespoon of sugar contains about 45.

To convert your macro targets in grams back to calories: multiply protein grams by 4, carbohydrate grams by 4, and fat grams by 9. The three totals should approximately equal your daily calorie target, with minor rounding differences.