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Daily Calories
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Enter your details to estimate a daily target.
Maintenance calories will appear here after calculation.
Macro Calculator
Formula transparencyMifflin-St Jeor by default. Katch-McArdle when body fat is entered.
Goal-based planningChoose cut, maintain, or gain with clear calorie adjustments.
Clear macro breakdownView grams, percentages, and calories for each macro.
Only the selected unit fields are shown below.
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Protein
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Carbs
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Fat
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Calculation summary
See the formula, maintenance estimate, and goal adjustment behind your macro target.
Formula—
BMR / REE—
Maintenance—
Goal adjustment—
Macro split
Each bar shows how much of your calorie target is assigned to protein, carbs, and fat.
How this macro calculator works
Leading macro calculator pages rank because they answer the calculation, explain the numbers, and help people use the result. This page keeps those three steps together.
- Estimate calorie needs. The calculator starts with resting energy expenditure, then adjusts for movement and exercise.
- Apply the goal. Fat loss uses a deficit, maintenance keeps calories steady, and muscle gain adds a surplus.
- Convert calories into grams. Protein and carbohydrates use 4 calories per gram. Fat uses 9 calories per gram.
Why many people search for a macro calculator instead of only a calorie calculator
Calories influence weight change, while macro balance helps shape protein intake, workout fuel, satiety, recovery, and day-to-day meal planning. That is why a complete macros calculator shows both calories and macro targets together.
Macro calculator formulas
Transparent formulas improve trust and make the result easier to understand.
Mifflin-St Jeor
Male: 10 × weight (kg) + 6.25 × height (cm) − 5 × age + 5
Female: 10 × weight (kg) + 6.25 × height (cm) − 5 × age − 161
Katch-McArdle
370 + 21.6 × lean body mass (kg)
Lean body mass = weight × (1 − body fat % ÷ 100)
Calories to macros
Protein grams = protein calories ÷ 4
Carb grams = carb calories ÷ 4
Fat grams = fat calories ÷ 9
Common macro styles and when to use them
These presets help cover broad search intent such as macro calculator for weight loss, macro calculator for muscle gain, low carb macro calculator, and keto macro calculator.
| Macro style | Protein | Carbs | Fat | Often chosen for |
|---|---|---|---|---|
| Balanced | 30% | 40% | 30% | General nutrition planning and maintenance |
| Higher Protein | 35% | 35% | 30% | Fat loss phases, satiety, and muscle retention |
| Lower Carb | 35% | 25% | 40% | People who prefer fewer carbs and more fats |
| Keto Style | 25% | 10% | 65% | Very-low-carb eating patterns |
Example macro calculator results
Examples help people compare calorie targets and understand what a macro plan looks like in practice.
| Daily calories | Macro style | Protein | Carbs | Fat |
|---|---|---|---|---|
| 1,800 | Higher Protein | 158 g | 158 g | 60 g |
| 2,000 | Balanced | 150 g | 200 g | 67 g |
| 2,400 | Balanced | 180 g | 240 g | 80 g |
| 2,700 | Lower Carb | 236 g | 169 g | 120 g |
Activity level guide
Many incorrect macro results start with an unrealistic activity choice. Use the description that fits your full week.
| Activity level | Multiplier | Typical routine |
|---|---|---|
| Sedentary | 1.20 | Mainly seated work and very little structured exercise |
| Light exercise | 1.375 | Walking plus 1 to 3 training sessions per week |
| Moderate exercise | 1.55 | Regular training 3 to 5 times per week |
| Very active | 1.725 | Hard training 6 to 7 times per week |
| Athlete | 1.90 | Twice-daily sessions or highly physical work and training |
Frequently asked questions
These questions answer common follow-up searches without forcing users to leave the page.
What macro calculator should be used for weight loss?
A weight-loss macro calculator should estimate maintenance calories first, then create a sustainable deficit and keep protein high enough to support satiety and muscle retention. A moderate deficit is usually easier to follow than an aggressive cut.
What are good starting macros for maintenance?
A balanced split such as 30% protein, 40% carbs, and 30% fat is a practical starting point for many people, though personal preference and training style still matter.
Should protein be higher during a cut?
Many people prefer higher-protein macro targets during fat-loss phases because they can support fullness and help preserve lean mass while calories are lower.
What is the difference between calories and macros?
Calories measure energy. Macros describe where that energy comes from: protein, carbohydrates, and fat. Weight change depends mostly on total calorie balance, while macro balance shapes meal planning and nutrient distribution.
Can this macro calculator be used globally?
Yes. The calculator supports metric and imperial units and explains the formulas in universal nutrition terms so the result is easy to use in different countries and food-label systems.
Are macro targets exact?
No online calculator can predict human metabolism perfectly. These numbers are best used as a starting point, then adjusted based on body-weight trend, training performance, recovery, and hunger over time.
Sources and references
This page uses recognized nutrition formulas and also reviewed leading macro calculator pages to understand what users expect from a high-quality result page.