Free Macro Calculator

Find Your Daily Macro Targets

Calculate your daily protein, carb, and fat targets based on your calorie needs, your goal, and the diet style you actually want to follow.

Mifflin-St Jeor Formula
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4 Diet Styles
4Daily Targets
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4Diet Styles
Macro Calculator
Protein, Carbs & Fat Targets
Gender
Controls how your calories are split between protein, carbs, and fat.

Your Results

Daily Calories
Protein (g)
Carbs (g)
Fat (g)
Fill in your details and press calculate.
Note: These targets are estimates based on standard formulas and general nutrition guidelines. They are for education and convenience only and do not replace medical or dietetic advice — especially for restrictive diets like keto.
How It Works

Three Steps to Your Daily Macros

No food diary needed to get started — just your stats, your goal, and your preferred diet style.

01

Enter Your Details & Goal

Choose your unit system, gender, age, height, weight, activity level, and whether you want to lose weight, maintain, or gain muscle.

02

We Calculate Your Calories

We estimate your BMR and TDEE, then adjust it up or down based on your goal to find your target daily calorie intake.

03

Get Your Macro Split

Your target calories are divided into grams of protein, carbs, and fat based on the diet style you picked.

The Basics

What Are Macronutrients?

Macronutrients — "macros" for short — are the three nutrients that supply your body with energy: protein, carbohydrates, and fat. Every food you eat is made up of some combination of these three, plus water, fiber, vitamins, and minerals.

Each macro provides a different amount of energy per gram: protein and carbohydrates each supply 4 calories per gram, while fat supplies 9 calories per gram — more than double. That's why the same calorie target can be split into very different gram amounts depending on which diet style you follow.

Why It Matters

Why Track Macros Instead of Just Calories

1

Protein Protects Muscle

Hitting a protein target — not just a calorie target — helps preserve lean mass while losing fat, and supports muscle growth while gaining.

2

It Affects Energy & Satiety

Two diets with identical calories but different macro splits can feel completely different — carbs fuel training, fat supports hormones, and protein keeps you full.

3

It Shapes Body Composition

Calories determine whether you gain or lose weight, but your macro split has a real influence on how much of that change is muscle versus fat.

The Formula

How Your Macros Are Calculated

We start with your Basal Metabolic Rate (BMR) using the Mifflin-St Jeor equation, scale it up for activity to get your Total Daily Energy Expenditure (TDEE), adjust it for your goal, then split the result into grams of protein, carbs, and fat.

Step 1

Protein Formula

protein (g) = (target calories × protein %) ÷ 4 — since protein supplies 4 calories per gram.

Same conversion used for carbs
Step 2

Fat Formula

fat (g) = (target calories × fat %) ÷ 9 — since fat supplies 9 calories per gram, more than double protein or carbs.

Why high-fat diets use fewer grams

BMR → TDEE → Goal-Adjusted Calories

BMR (Mifflin-St Jeor): Male = 10×kg + 6.25×cm − 5×age + 5. Female = 10×kg + 6.25×cm − 5×age − 161. TDEE = BMR × activity multiplier. Target Calories = TDEE × (1 + goal adjustment), where losing weight is −20%, maintaining is 0%, and gaining muscle is +15%.

Swipe to see all columns →

Diet StyleProtein %Carbs %Fat %
Balanced30%40%30%
High Protein40%35%25%
Low Carb30%20%50%
Keto25%5%70%
Recommended Ranges

Recommended Macro Ranges by Goal

Protein needs are usually expressed relative to bodyweight rather than as a fixed percentage, since it's the macro most closely tied to preserving and building muscle.

GoalProtein (g/kg bodyweight)Why
Lose Weight1.6–2.2 g/kgHigher end preserves muscle in a deficit
Maintain1.2–1.6 g/kgSupports upkeep without excess
Gain Muscle1.6–2.2 g/kgSupports muscle protein synthesis in a surplus

What Affects Your Ideal Macro Split

Training volume — heavier lifters often benefit from more carbs around workouts
Body composition goals — more aggressive recomposition may favor higher protein
Personal tolerance & preference — sustainability matters more than perfection
Medical conditions — some conditions require specific macro adjustments under medical guidance

A Good Starting Point

Don't chase extreme splits without a clear reason
Don't drop fat below ~20% of calories long-term
Diet Styles Compared

Which Diet Style Is Right for You?

All four splits can work for fat loss or muscle gain — the right one is the macro split you can actually stick to. If you're focused purely on the calorie side of the equation, our Calorie Deficit Calculator can help you dial in a sustainable deficit before you worry about the macro breakdown.

Balanced
30/40/30
Flexible and easy to sustain long-term
Low Carb
30/20/50
Can reduce appetite, less ideal for heavy training
Keto
25/5/70
Very restrictive, needs an adjustment period

A Quick Take on Each Style

⚖️
Balanced

An even split that works well for most people and is the easiest to maintain socially and while traveling.

💪
High Protein

Best when muscle retention or growth is the priority, especially during a calorie deficit.

🥩
Low Carb

Can help control appetite and blood sugar swings, though it may feel limiting around intense training.

🥑
Keto

A very low-carb, high-fat approach that requires real commitment and isn't necessary for fat loss — it's simply one option among several. Pair it with your Metabolic Age & BMR Calculator results to keep your baseline calorie estimate accurate as your weight changes.

Taking Action

8 Tips to Actually Hit Your Macros

Knowing your numbers is the easy part — these habits make hitting them day after day realistic.

1

Prioritize Protein at Each Meal

Spreading protein across 3–4 meals makes it far easier to hit your daily total than trying to cram it in at dinner.

2

Plan Meals Ahead

A rough plan for the day — even a mental one — prevents you from running out of carbs or fat budget by dinnertime.

3

Use a Food Scale or App at First

Weighing food and logging it for a couple of weeks builds an accurate sense of portion sizes you can rely on later.

4

Don't Fear Carbs Around Training

Carbohydrates fuel intense workouts and replenish glycogen — they're not the enemy, especially close to training sessions.

5

Choose Whole-Food Fat Sources

Nuts, olive oil, avocado, and fatty fish deliver your fat target along with nutrients that processed oils don't provide.

6

Adjust as You Progress

Recalculate every few weeks or after a meaningful weight change — your targets should move as your body and goal do.

7

Consistency Beats Perfection

Landing within 5–10g of a target most days will get you further than hitting it exactly some days and missing badly on others.

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Don't Forget Hydration

Water supports digestion and nutrient transport, and it's easy to overlook while you're focused on counting grams.

FAQ

Common Questions

Everything you need to know about calculating and hitting your daily macros.

No. These numbers are targets, not strict rules. Staying within roughly 5–10 grams of each target most days is enough to see real progress without obsessing over every gram.
Prioritize your protein and total calorie targets first — they matter most for body composition. Carb and fat grams can flex day to day as long as your calories stay roughly on track.
No. Fat loss ultimately comes down to a sustained calorie deficit — keto is just one way to structure your macros, not a requirement. Choose the diet style you can stick with consistently.
For most healthy adults, intakes up to roughly 2.2g per kg of bodyweight are well-supported by research and considered safe. Going well beyond that offers little extra benefit for most people.
Some people shift more carbs to training days and slightly more fat to rest days, but it's optional. Keeping the same daily targets every day also works fine for most goals.
It's simply how energy-dense fat is compared to protein and carbohydrates. This is why high-fat diets like keto end up with relatively low gram targets despite a large share of total calories.
Yes — your BMR and TDEE change as your weight changes, so it's worth recalculating every 5–10 pounds (or every few weeks) to keep your targets accurate.