Macro Target Calculator

Daily Macro Targets

Calories {{ totalCalories }} Protein {{ proteinGrams }} g Carbs {{ carbGrams }} g Fat {{ fatGrams }} g Meals {{ meals_per_day }}

Sex:

Age:

years:

Body weight:

Height:

Activity level:

Goal:

Weekly change rate:

Macro template:

Meals per day:

meals:

Protein per weight:

Custom ratios (%):

Random seed:

Metric	Value	Copy
{{ row.metric }}	{{ row.value }}

Macro	Percent	Grams	Calories	Per meal	Copy
{{ row.macro }}	{{ row.percentDisplay }}%	{{ row.gramsDisplay }} g	{{ formatNumber(row.caloriesValue) }} kcal	{{ row.perMealDisplay }}
Total	100%	{{ macroTotals.gramsDisplay }} g	{{ formatNumber(totalCalories) }} kcal	{{ macroTotals.perMealCaloriesDisplay }}

Meal	Calories	Protein (g)	Tip	Copy
{{ meal.name }}	{{ meal.caloriesDisplay }} kcal	{{ meal.proteinDisplay }} g	{{ meal.tip }}

Macro targets are estimates. Consult a registered dietitian or healthcare professional before making significant dietary changes, especially with medical conditions.

Tags: Body Metrics , Nutrition

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Macronutrient targets turn a daily energy budget into grams of protein, carbohydrate, and fat. That matters because the same calorie total can support very different eating patterns, training recovery, and satiety depending on how those calories are distributed. This calculator estimates a daily target from body size, age, activity, and goal, then converts it into macro amounts you can portion across the day.

It is useful when you already know the direction of travel but do not want to hand-calculate basal needs, activity-adjusted calories, and macro grams. Someone planning weekday meal prep, tightening a cut, or testing whether a higher-protein split still fits a maintenance budget can compare scenarios quickly without rebuilding the math each time.

Shaded map with deficit, maintenance, and surplus regions on the horizontal axis and protein-density guide lines at 1.6 and 2.2 grams per kilogram.

The results are best treated as a starting plan rather than a verdict on what you personally should eat. The calorie estimate comes from a population equation and broad activity multipliers, so it becomes more useful when you compare it with real weight trend, appetite, training quality, and recovery over time.

For adolescence, pregnancy, eating-disorder recovery, diabetes, kidney disease, or any medically prescribed diet, the numbers need professional context. This page is informational and does not replace advice from a registered dietitian, physician, or other qualified clinician.

Everyday Use & Decision Guide:

The summary view is meant to answer one practical question first: how many calories and grams does this plan imply each day? It surfaces basal metabolic rate (BMR), total daily energy expenditure (TDEE), the goal adjustment, target calories, and protein density so you can tell whether the plan looks plausible before worrying about fine detail.

Activity level usually drives the biggest difference between two otherwise similar entries. If you overstate movement, the calorie target inflates before macro percentages are even applied. When the number looks surprisingly high or low, the cleanest first check is the activity assumption, not an immediate switch to a more extreme macro split.

The built-in templates are planning presets, not clinical standards. Balanced keeps protein, carbohydrate, and fat relatively even, high protein shifts more energy toward protein while still leaving room for carbohydrate, lower carb leans more on fat, and endurance keeps the highest carbohydrate share for users who prefer that fueling style.

If you are unsure where to begin, maintenance with the balanced template is the most stable baseline for a one or two week reality check.
Use a deficit or surplus only when you can compare the target against body-weight trend rather than a single day of scale noise.
Treat the meal table as an equal-division prompt for portioning, not as a personalized meal plan or food-quality recommendation.

The protein-per-weight field changes the tool in an important way. Once you enter grams per kilogram or per pound, protein is fixed first and the remaining calories are redistributed between carbohydrate and fat according to the chosen base split. That is useful when you care more about holding a protein floor than preserving a tidy round-number ratio.

The meal suggestions section is deliberately lightweight. It divides calories and protein evenly across the selected number of meals, then pairs those slots with short tips such as breakfast, lunch, dinner, or post-workout. The optional seed exists so those labels stay repeatable for the same inputs, which helps when you want stable exports for notes or meal-prep documents.

Technical Details:

The energy estimate starts with the Mifflin-St Jeor resting equation. Weight is converted to kilograms, height to centimeters, age is used in years, and sex at birth changes the constant term. That produces BMR, which is then multiplied by an activity factor to estimate TDEE.

The goal setting layer works directly from TDEE. Maintenance leaves calories unchanged, fat loss subtracts the selected percentage, recomposition subtracts 60 percent of that percentage, and muscle gain adds the full percentage. The tool clamps the selected change rate to a 0 to 25 percent range before applying it.

Macro allocation is then handled in two passes. First the page chooses a ratio from a preset or from a valid custom triplet. If a protein-per-weight value is present, protein calories are fixed first, capped at 50 percent of total calories, and the remaining calories are divided between carbohydrate and fat in proportion to the chosen base ratio. Finally, macro grams are derived with the usual 4 kcal per gram for protein and carbohydrate and 9 kcal per gram for fat.

The formulas below capture the parts of the tool that actually change the output. They explain why the same calorie target can lead to different gram totals when you switch goal, preset, protein floor, or meal count.

\begin{array}{lll} BMR (female) & = & round (10 w_{kg} + 6.25 h_{cm} - 5 a_{y} - 161) \\ BMR (male) & = & round (10 w_{kg} + 6.25 h_{cm} - 5 a_{y} + 5) \\ TDEE & = & round (BMR f) \\ C_{target} & = & round (TDEE + Δ C_{goal}) \end{array}

Here, f is the activity factor and ΔC_goal is the calorie adjustment implied by maintain, cut, recomp, or bulk.

Activity factors and goal adjustments
Setting	Package meaning	Multiplier or rule
Sedentary	Desk work or very low movement	1.2
Light	Lightly active, about 1 to 3 sessions each week	1.375
Moderate	Moderately active, about 3 to 5 sessions each week	1.55
High	Very active, about 6 to 7 sessions each week	1.725
Athlete	Double sessions or unusually high training load	1.9
Fat loss	Subtract the full chosen percentage from TDEE	−p%
Recomposition	Subtract 60 percent of the chosen percentage	−0.6p%
Muscle gain	Add the full chosen percentage to TDEE	+p%

After calories are fixed, the page converts percentages into grams. When a protein floor is entered, it overrides the template for protein only, then rescales carbohydrate and fat around whatever base split you selected.

\begin{array}{lll} {cal}_{m} & = & C_{target} \frac{%_{m}}{100} \\ g_{m} & = & \frac{{cal}_{m}}{{kcal}_{per g}} \\ protein% & = & min (50, \frac{g / kg w_{kg} 4 100}{C_{target}}) \end{array}

The calorie-to-gram conversion is fixed by nutrient energy density. Protein and carbohydrate use 4 kcal per gram, while fat uses 9 kcal per gram.

Built-in macro templates
Template	Protein	Carbohydrate	Fat
Balanced	30%	40%	30%
High protein	35%	35%	30%
Lower carb	35%	25%	40%
Endurance	25%	50%	25%

Rules that materially affect interpretation
Rule	Package behavior	Why it matters
Age guardrail	15 to 90 years only	Outside that range the page returns an error instead of estimating.
Height guardrail	130 to 220 cm after unit conversion	This prevents obviously out-of-scope energy estimates.
Custom ratio	Three numeric parts whose total is approximately 100	Incomplete or badly summed entries stop the calculation.
Meals per day	Clamped to 0 to 6 in logic, with 2 to 6 exposed in the form	Per-meal targets are equal divisions, not separate meal-specific calculations.
Random seed	Used only for repeatable meal labels and tips	It does not alter calories, ratios, or grams.

Step-by-Step Guide:

Enter sex, age, body weight, and height with the correct units. If the page stops with an error, check that age is 15 to 90 and height converts to 130 to 220 cm.
Choose the activity level that best matches ordinary weeks, not an exceptional training day. This choice feeds directly into TDEE.
Select a goal and set the weekly change rate. If target calories look extreme, verify activity level first, then reduce the percentage before changing macro ratios.
Pick a built-in template or enter a custom ratio as three comma-separated percentages such as 30,40,30. The custom entry must total about 100.
Add protein per kilogram or per pound only if you want a protein floor to override the preset balance. Leave it blank if you want the template to stay intact.
Set meals per day if you want equal per-meal targets, and add a seed only when you want repeatable meal labels in CSV, JSON, or DOCX exports.
Review the Summary, Macros, Meals, Macro Breakdown, Macro Target Map, or JSON views. If the map and summary disagree with your real-world trend after a couple of weeks, revise the inputs rather than assuming the formulas are wrong.

Interpreting Results:

BMR is the quiet baseline estimate, TDEE is the activity-adjusted estimate, and target calories are the number you would actually plan around. Those three fields should make narrative sense together. If BMR looks reasonable but target calories do not, the issue is usually activity level or goal percentage rather than the macro split itself.

The macro table answers a different question from the summary markers. Its job is to translate calories into grams and, when meal count is present, into equal per-meal portions. Protein density is the more comparable field across body sizes because it normalizes protein against body weight instead of leaving you with a raw gram total alone.

Macro target map thresholds
Output field	Boundary	Label used by the page
Goal calorie delta (%)	<= -5	Deficit
Goal calorie delta (%)	> -5 and < 5	Maintenance
Goal calorie delta (%)	>= 5	Surplus
Protein density (g/kg)	< 1.6	Low protein
Protein density (g/kg)	>= 1.6 and < 2.2	Adequate protein
Protein density (g/kg)	>= 2.2	High protein

A point landing in an adequate or high protein band does not prove the whole plan is right for you. Those labels are package thresholds, not guarantees about recovery, body composition, or diet quality. The corrective check is simple: compare the target against two to four weeks of body-weight trend, gym performance, and hunger. If your outcome is moving opposite to the goal, revisit the energy side first.

Worked Examples:

Maintenance baseline

A 32-year-old female at 70 kg and 170 cm with light activity and a maintenance goal produces a BMR of 1442 kcal and a TDEE of 1983 kcal. With the balanced template, the page returns about 148.7 g protein, 198.3 g carbohydrate, and 66.1 g fat.

If meals per day is set to 3, the equal-division output becomes about 49.6 g protein, 66.1 g carbohydrate, and 22.0 g fat per meal. The target map reads maintenance on the horizontal axis and about 2.12 g/kg protein on the vertical axis, which lands in the adequate protein band.

Surplus with a protein floor

A 29-year-old male at 85 kg and 180 cm with moderate activity, a 10 percent surplus, and a protein target of 1.8 g/kg yields a TDEE of 2844 kcal and a target of 3128 kcal. Because protein is fixed first, the page keeps protein at 153 g, then redistributes the remaining calories across carbohydrate and fat according to the selected base split.

That produces about 338.7 g carbohydrate and 129.0 g fat with four equal meals, or roughly 38.3 g protein per meal. The useful lesson is that a protein floor can lower protein percentage while still keeping total protein high, because the calorie target is larger.

Troubleshooting a failed custom ratio

If you enter a custom value such as 35,35 or 35,35,20, the page stops and reports that the ratio must contain three percentages summing to 100. The correction is to enter all three parts and make sure the total is close enough to 100 for normalization, for example 35,40,25.

FAQ:

Why do my calories look too high?

Start by checking the activity level. Because TDEE equals BMR multiplied by the selected factor, an optimistic activity choice can move the entire plan up before macro percentages are applied.

What does recomposition mean here?

In this package, recomposition is a milder cut. The page subtracts 60 percent of the chosen deficit instead of the whole percentage, which keeps calories closer to maintenance than the fat-loss setting.

Are the meal suggestions real meal plans?

No. They are equal calorie and protein divisions with short reminder tips. Food choice, micronutrients, allergies, and schedule constraints are outside the model.

Does the page send my nutrition data to a server?

No server-side helper is present for this tool. The calculations, charts, and CSV, JSON, DOCX, PNG, JPEG, and WebP exports are generated in the browser session.

Who should not rely on this estimate alone?

Children, pregnant users, people with active medical conditions, and anyone on a prescribed diet should use the result only as background context. Those cases need individualized assessment that this page does not attempt.

Glossary:

BMR: Basal metabolic rate, the resting calorie estimate produced from weight, height, age, and sex at birth.
TDEE: Total daily energy expenditure, calculated by multiplying BMR by the selected activity factor.
Goal calorie delta: The percentage change applied to TDEE for cut, recomp, or bulk before the final calorie target is rounded.
Protein density: Total daily protein divided by body weight in kilograms, used for the vertical axis of the target map.
Macro template: One of the built-in percentage presets that establishes the starting split before any custom ratio or protein floor overrides it.