A TDEE calculator gives you one number: the daily calories you need to maintain, lose, or gain weight. What it does not give you is a way to divide that number into protein, carbohydrate, and fat. A macro split is how you turn a calorie target into actual food choices, and the order of decisions matters: set protein first, based on body weight, then fill the remaining calories with carbohydrate and fat inside a tolerable range. This article walks through that sequence and the caveats around the official 2026 guidance.
What acceptable means in AMDR
AMDR stands for acceptable macronutrient distribution range. The word acceptable is not the same as optimal. Dictionary.com defines acceptable as “meeting only minimum requirements; barely adequate” or “capable of being endured; tolerable.” That is the right frame for AMDR: it is a band of total energy intake within which most people can meet nutrient needs and reduce chronic disease risk, not a narrow target that you must hit exactly. The specific lower and upper percentage values from the 2025–2030 Dietary Guidelines for Americans are not included in the sources cited for this article, so they are not reprinted here. Any split inside the range can work; the best split depends on your training goal, food preferences, and how well you adhere to it.
Protein first, from body weight
One approach is to set protein grams per kilogram of body weight rather than as a percentage of total calories. The exact gram-per-kilogram figure in the 2026 ISSN guidance is not available in the sources cited for this article, so it is not reprinted here. The sequence itself is simple: determine your weight in kilograms, multiply by the protein target your dietitian or the relevant position stand recommends, and convert those grams to calories. This protects lean tissue during fat loss and provides the building blocks for muscle gain. Your carbohydrate and fat intakes then fill the remaining calorie budget.
Converting percentages into grams
Once you know what share of your calories should come from a macronutrient, you still need the arithmetic to find grams. The method is straightforward: divide the calorie allotment for a macronutrient by the number of calories in one gram of that macronutrient. The calories-per-gram values are printed on the nutrition facts panel and are available from USDA FoodData Central; they are not reproduced in this article’s sources. For practical purposes, you can work in reverse too: multiply grams by the same per-gram energy value to see how many calories a serving contributes. Keeping a food log with these conversions is the only way to check whether your actual intake matches the split you set from your TDEE.
Higher protein for fat loss and muscle gain
In 2026, debate continues about how much higher protein should go above the population minimum. The sources available for this article do not include the specific 2026 ISSN recommendation or any 2026 studies on higher-protein diets, so no number can be quoted here. Without that number, no 2026 claim about the optimal higher-protein intake can be made in this article. If your goal is body recomposition, you may want to discuss with a registered dietitian whether spending more of your calorie budget on protein and less on fat is right for you, while keeping carbohydrate high enough to support training.
Local support without changing your targets
Your protein, carbohydrate, and fat targets scale with your body weight, activity level, and goal, not with the demographics of your postal code. Using a ZIP Code Lookup can help you find a nearby grocery store, gym, or registered dietitian to support the plan you have already set, but it will not change the math. A useful routine is to set your macros in grams from your TDEE, then use a ZIP code lookup only when you need to locate a place to buy the foods or train. The macro split stays the same whether you live in one ZIP code or another.
Practical starting point
Begin by taking your TDEE, setting a protein target from your body weight, and then assigning the rest to carbohydrate and fat inside the acceptable range. Track your intake using food labels, and adjust regularly based on weight change and performance. Your ZIP code is only a tool for finding the shop or gym; it is not part of the calorie-to-gram calculation.