Macros for Maintenance — Men Age 65+ (High-Protein)

For a man aged 65+ who is aiming to hold body weight steady while supporting training and everyday energy needs, the numbers on this page are: 2484 kcal a day, split into 180 g of protein, 261 g of carbohydrate and 80 g of fat. That is the headline result, and everything below shows how it was worked out — the basal metabolic rate from the Mifflin-St Jeor equation (Mifflin et al. 1990), the activity multiplier, the goal adjustment, and the Atwater energy values of 4 kcal per gram of protein, 4 kcal per gram of carbohydrate and 9 kcal per gram of fat (Atwater 1896; USDA). This page uses a high-protein split — protein set first at 2.2 g per kilogram, the top of the published 1.6–2.2 g/kg range, then the remaining calories divided between carbohydrate and fat. The extra protein helps satiety and muscle retention, at the cost of less room for carbohydrate and fat. Maintenance is not a pause between diets — it is a goal in its own right, and it is where most people should spend most of their time.

The worked example assumes a man aged 67 weighing 82 kg and 178 cm tall, moderately active — that means exercise or active work on most days, the 1.55 activity multiplier. Those are assumptions for illustration, stated plainly so you can see exactly where every number comes from. Your own weight, height, age and activity level will give different numbers, and the Macro Calculator will work them out for you in seconds.

A macro split is only useful if it is built on a calorie target that fits the goal. A cutting split at maintenance calories will not cut anything, and a bulking split at a deficit will not build anything. So this page starts with the calories, then splits them — in that order, because the order is the whole logic of the thing.

Use the macro calculator for your own numbers

The figures here are for one specific person: a man aged 65+, 82 kg, 178 cm, moderately active, maintenance. To get your own split, use the Macro Calculator — enter your weight, height, age, sex, activity level and goal, and it returns your calorie target and your protein, carbohydrate and fat in grams. If you want to check the protein figure separately, the Protein Calculator works it out from your body weight and activity alone.

Related macro pages, covering the same calculation for other ages and diet styles:

The formulas, shown and cited

Two published systems do the work on this page. The first is the Mifflin-St Jeor equation for basal metabolic rate (Mifflin et al., American Journal of Clinical Nutrition 1990), which estimates the calories you burn at complete rest:

Men: BMR = 10 × weight (kg) + 6.25 × height (cm) − 5 × age + 5

Women: BMR = 10 × weight (kg) + 6.25 × height (cm) − 5 × age − 161

The second is the Atwater system (Atwater 1896; USDA), which gives the energy in food:

Protein: 4 kcal per gram · Carbohydrate: 4 kcal per gram · Fat: 9 kcal per gram

Worked through for this page's assumed man (82 kg, 178 cm, age 67):

  • BMR = 10 × 82 + 6.25 × 178 − 5 × 67 + 5 = 1602 kcal a day at rest
  • TDEE = BMR × 1.55 (moderately active) = 1602 × 1.55 = 2484 kcal a day
  • Goal adjustment (maintenance): 2484 + 0 = 2484 kcal a day

The safety floors apply here and are respected: the target of 2484 kcal is above the minimum safe intake of 1500 kcal a day for men. No target on this page ever goes below 1,200 kcal a day for women or 1,500 kcal a day for men, and nobody should eat below those floors without medical supervision.

The macro split, with the maths shown

Protein is set first, from body weight, because the evidence on protein is the strongest part of sports nutrition. For maintenance, the target used here is 2.2 g per kilogram of body weight per day, which sits inside the published range of 1.6–2.2 g/kg for lifters and dieters (Morton et al. 2018) — and above the 0.8 g/kg that covers sedentary adults. At 82 kg, that is 2.2 × 82 = 180.4 g, rounded to 180 g a day, worth 180 × 4 = 720 kcal.

Then the remaining calories are split according to the diet style. This page uses a high-protein split, with protein set first and the remaining calories divided between carbohydrate and fat: 60% of the remaining calories to carbohydrate and 40% to fat.

Macro Grams per day kcal per day % of calories
Protein 180 g 720 kcal 29%
Carbohydrate 261 g 1044 kcal 42%
Fat 80 g 720 kcal 29%
Total — 2484 kcal 100%

After protein, 1764 kcal remain. About sixty percent of that remainder goes to carbohydrate (1044 kcal, or 261 g at 4 kcal per gram) and the rest to fat (720 kcal, or 80 g at 9 kcal per gram).

Check the arithmetic: 720 + 1044 + 720 = 2484 kcal, which matches the 2484 kcal target. If those numbers ever disagree on a page like this, the page is wrong — the grams and the calories must always reconcile through the 4/4/9 Atwater values, and on this page they do.

Note what the split does not do: it does not tell you which foods to eat, and it does not say anything about food quality. 180 g of protein from chicken, lentils and Greek yoghurt is not the same diet as 180 g of protein from processed meat, even though the macro table looks identical. The numbers are a framework; the food choices inside the framework are where health actually lives.

What a day of eating looks like

Split across four meals, the daily targets divide roughly as follows. These are illustrative portions for a man eating 2484 kcal — adjust the foods to your own preferences, allergies and budget, and keep the totals, not the specific dishes.

Meal Protein Carbs Fat
Breakfast 45 g 66 g 20 g
Lunch 45 g 65 g 20 g
Dinner 45 g 65 g 20 g
Snack / post-training 45 g 65 g 20 g

In practice, an even split across meals is a starting point rather than a rule. Many people prefer a larger dinner and a lighter breakfast, or a bigger post-training meal, and that is fine — the daily total is what drives the result, not the per-meal symmetry. Two things do matter at the meal level, though. First, spreading protein across three to five meals of roughly 25–50 g each uses it better than eating most of it in one sitting. Second, the meal after training is the one worth planning properly, with protein and carbohydrate together, rather than leaving it to chance.

Foods that make these numbers easy to hit: for protein, carbohydrate and fat, chicken breast, turkey, eggs and egg whites, Greek yoghurt, cottage cheese, lean beef, fish, lentils and tofu for protein — the list is longer than usual because hitting a high protein target needs several protein foods a day, not one large serving; oats, rice and fruit for carbohydrate; olive oil, nuts and avocado for fat, kept modest so the protein fits. A single tablespoon of olive oil adds about 14 g of fat and 120 kcal, which is why fat targets are so often overshot by accident — cooking oil is invisible in the macro count unless you measure it.

How to use the result, and when to adjust it

Follow this split for two to three weeks and track your weight, then judge it by the trend, not by a single weigh-in. For maintenance, success looks like holding weight steady within a kilogram or two over several weeks. Weigh yourself at the same time of day, in the same conditions, several times a week, and look at the weekly average — daily weight moves by a kilogram or more with water, food and glycogen, and none of that is fat.

A high-protein split is the least forgiving on appetite: protein is very filling, and some people find the target hard to reach without planning. Spread it deliberately — a protein food at every meal and a protein snack — rather than trying to eat most of it at dinner. If the target feels impossible, check whether the calorie target itself is the problem before dropping the protein.

If the trend is not moving after three weeks, change one thing by a small amount: adjust calories by 100–200 kcal a day and hold the new level for another two weeks. Do not change the calories, the protein and the training all at once, because then you will not know which change did the work. And do not chase the scale daily — the trend over three weeks is the measurement; a single morning's number is noise.

Age matters to the adjustment, and this page's age band is part of the calculation, not decoration. After 65, keeping muscle is the single most important nutritional goal, because muscle is what keeps strength, balance and independence. The protein target on this page is set at the upper end of the published range for exactly that reason, and spreading it across the day in 25–50 g servings matters more than ever. Anyone over 65 with a medical condition, reduced appetite, or medication that affects eating should treat these numbers as a starting point for a conversation with a clinician, not a plan to follow alone. Resistance training two to four times a week is the other half of the plan for this age band: the macros supply the material, the training supplies the signal, and neither works well without the other.

If you are maintenance and you train, keep the protein where it is and adjust carbohydrate and fat first when calories need to change. Cutting protein to save calories is the most common mistake in a diet, because it is muscle that gets lost alongside the fat. The protein figure of 180 g is the floor of this plan, not a negotiable extra.

What the macro numbers do NOT tell you

A macro split is an estimate built on an estimate. The Mifflin-St Jeor equation predicts basal metabolic rate for a population average, and any individual can sit 10–15% above or below it. The activity multiplier of 1.55 is a broad band, not a measurement — two people who both describe themselves as "moderately active" can burn very different amounts in a day. That is why the page tells you to track the weight trend and adjust, rather than treating 2484 kcal as a precise prescription.

The split also says nothing about micronutrients, fibre, or food quality. It is entirely possible to hit 180 g of protein, 261 g of carbohydrate and 80 g of fat while eating almost no vegetables, almost no fibre, and far too much salt and added sugar. The numbers are a calorie framework, not a complete diet. A useful rule of thumb alongside them: aim for at least 25–30 g of fibre a day and a plate that is half vegetables at lunch and dinner, and the micronutrient side of the diet largely takes care of itself.

The split also cannot account for medical conditions. Kidney disease changes the protein answer — people with reduced kidney function should not follow a high-protein target without a clinician's guidance. Diabetes changes the carbohydrate answer. A thyroid condition, certain medications, pregnancy and breastfeeding all change the calorie answer. This page is a general-purpose estimate for a healthy adult; if any of those apply, the numbers here are a starting point for a conversation with a professional, not a plan to follow alone.

Finally, the split does not measure adherence. The best macro ratio in the world is worthless if the diet is miserable enough to abandon in a fortnight. A high-protein split that you can sustain for months beats a theoretically perfect split that lasts a week. If this split feels unworkable — if the fat is too low to enjoy food, or the carbohydrate cap makes training feel flat — change the split and keep the calories and the protein, rather than abandoning the plan altogether.

Frequently asked questions

How many calories should a man aged 65+ eat for maintenance?

On the assumptions used here (82 kg, 178 cm, moderately active), the estimate is 2484 kcal a day — a basal metabolic rate of 1602 kcal times the 1.55 activity multiplier, giving a maintenance level of 2484 kcal, with no adjustment. Your own figure will differ with your weight, height and activity; use the Macro Calculator with your own numbers.

How much protein is 180 g a day in real food?

About four servings of 25–50 g of protein — for example, chicken breast (about 30 g), a pot of Greek yoghurt (about 20 g), two eggs with cottage cheese (about 25 g), a tuna portion (about 25 g) and a whey or soya shake (about 25 g). The point of the per-meal table above is that 180 g sounds like a lot as one number and is very manageable split across four meals.

Is 2.2 g of protein per kilogram safe?

For healthy adults, 2.2 g/kg sits at the top of the published 1.6–2.2 g/kg range for active people (Morton et al. 2018), and it is the figure used throughout this page. The exception is kidney disease: people with reduced kidney function should not follow a high-protein target without a clinician's guidance, because the kidneys handle the extra nitrogen from protein.

What should I do first if my weight does not move after three weeks on 2484 kcal?

First, check the trend rather than a single weigh-in — daily weight fluctuates by a kilogram or more. If the three-week average is genuinely flat, adjust calories by 100–200 kcal in the direction of your goal and hold for another two weeks before judging again. Also check the quiet calorie leaks: cooking oil, drinks, sauces and snacks are the usual reason a careful-looking diet is not actually at 2484 kcal.

Why is the protein target 2.2 g/kg instead of 0.8 g/kg?

The 0.8 g/kg figure is the minimum to avoid deficiency in a sedentary adult, not the amount that best supports training and maintenance. The published evidence for active people (Morton et al. 2018) supports 1.6–2.2 g/kg for lifters and dieters, and this page uses 2.2 g/kg — inside that range. One exception: kidney disease changes the answer, so anyone with reduced kidney function should check with a clinician before following a high-protein target.

Does age 65+ change how I should eat these macros?

Yes, in emphasis rather than in arithmetic. After 65, keeping muscle is the single most important nutritional goal, because muscle is what keeps strength, balance and independence. The practical consequence is the same at every age: spread the 180 g of protein across the day, train with resistance two to four times a week, and judge the 2484 kcal target by the three-week weight trend rather than by how the first week feels.

Related pages

Estimates only, not medical advice. Minimum safe intakes: 1,200 kcal/day women, 1,500 kcal/day men — consult a healthcare professional before a very-low-calorie diet.