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Macro Calculator
Calculate your daily protein, carbohydrate, and fat targets based on your calorie goal and fitness objective u2014 whether you are losing fat, gaining muscle, or maintaining your current weight.
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How it works
Calculate your macros in three steps
Enter your stats and goal
Provide your age, sex, weight, height, and activity level, then select your goal: fat loss, maintenance, or muscle gain. This determines the appropriate calorie target.
Choose a macro split
Select from common preset ratios (balanced, high-protein, low-carb) or enter a custom percentage split. The calculator converts the ratios into daily gram targets.
Get your macro breakdown
Results display your daily protein, carbohydrate, and fat targets in grams, along with the calorie contribution from each macro so you can verify the totals add up correctly.
FAQ
Common questions about macros
What are macros and why do they matter?
Macronutrients u2014 protein, carbohydrates, and fat u2014 are the three categories of nutrients that provide dietary energy. Each gram of protein and carbohydrate provides 4 calories; each gram of fat provides 9 calories. Beyond calories, each macro serves distinct physiological functions: protein supports tissue repair and muscle synthesis, carbohydrates are the primary fuel for the brain and working muscles, and fat is essential for hormone production and absorption of fat-soluble vitamins. Tracking macros rather than just calories gives more precise control over body composition and performance outcomes.
How much protein do I need per day?
Protein requirements depend on your activity level and goals. General health guidelines suggest around 0.8 g per kg of body weight, but most sports nutrition research recommends 1.6u20132.2 g per kg for active individuals. Higher protein intakes toward the upper end of that range are often advised during calorie deficits to help preserve lean muscle mass. Older adults may also benefit from higher intakes due to reduced muscle protein synthesis efficiency with age. This calculator sets protein targets based on your selected goal and activity level.
Should I eat more carbohydrates or more fat?
There is no universally correct answer u2014 both carbohydrates and fat are essential nutrients, and the optimal ratio depends on individual preferences, activity type, and health conditions. Low-carb approaches reduce carbohydrates significantly, which some people find effective for fat loss or blood sugar management. Higher-carb approaches tend to suit endurance athletes and those doing high-intensity training. Neither macronutrient is inherently harmful within an appropriate total calorie intake. This calculator offers multiple ratio presets to suit a range of common dietary strategies.
Do I need to hit my macro targets precisely every day?
Strict daily macro tracking is useful for building dietary awareness but is not essential for everyone long-term. Many people find that hitting weekly averages is more practical and less stressful than achieving exact targets every single day. Missing one day is unlikely to have a meaningful impact on progress over time. If macro tracking becomes a source of significant anxiety or disrupts your relationship with food, it may be worth speaking with a registered dietitian to find a less rigid approach that still supports your goals.
Keep going
Related tools
TDEE Calculator
Calculate your total daily calorie burn before setting macro targets.
Calorie Deficit Calculator
Determine your calorie deficit target to pair with your macro plan.
BMR Calculator
Understand your resting calorie needs as the basis for macro planning.
BMI Calculator
Check your weight classification alongside your nutrition planning data.
About the Macro Calculator
The Macro Calculator breaks a daily calorie target into specific protein, carbohydrate, and fat goals expressed in grams. It is used by athletes, people in caloric deficits, individuals following structured diet plans, and anyone who wants more granular control over their nutrition than simple calorie counting provides. Macro targets help align food choices with body composition or performance goals more precisely.
Benefits
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Calculates macros based on TDEE-derived calorie targets for your specific goal -
Offers multiple ratio presets including balanced, high-protein, and low-carbohydrate splits -
Displays results in grams with per-macro calorie breakdowns for easy daily verification -
Fully browser-based u2014 no data logging, no account, no installation required
Privacy
All inputs are processed client-side in your browser; no personal health data is sent to or stored on any server.