How Much Protein Per Day? An Honest Guide That Doesn't Make You Count

"How much protein do I actually need" is one of the most-searched nutrition questions on the internet, and most of the answers are either too vague to use or too specific to follow.

The honest answer is that the number depends on you. But there is a sensible range backed by real research, and you can hit it without counting grams, weighing chicken breasts, or downloading a calculator.

Here's what the science actually says, translated into something you can apply tonight.

The number most people are quoting is wrong

The figure you've probably seen — 0.8 grams of protein per kilogram of body weight per day — comes from the original RDA set decades ago. According to the National Health and Medical Research Council, Australian guidelines list 0.75g/kg for women and 0.84g/kg for men.

The catch is that the RDA was never designed to describe optimal intake. It was set as the minimum needed to prevent deficiency in a sedentary adult. For most people who actually exercise, want to lose fat, want to build muscle, or just want to age well, that number is far too low.

The current sports nutrition and clinical research, including a 2025-2030 Dietary Guidelines update, supports a range closer to 1.2 to 1.6 grams per kilogram of body weight per day for general health, fat loss, and active living. That's roughly double the old RDA.

What the research actually says

Here's the practical breakdown of what's supported by current peer-reviewed research:

For general health (sedentary adult, no specific goals): 0.8 to 1.2g per kilogram of body weight.

For active adults or fat loss: 1.2 to 1.6g per kilogram.

For muscle gain or aggressive fat loss while preserving muscle: 1.6 to 2.2g per kilogram.

For older adults (50+): at least 1.0 to 1.2g per kilogram. The risk of sarcopenia (age-related muscle loss) makes adequate protein more important as you age, not less.

These ranges come from peer-reviewed sources including The American Journal of Clinical Nutrition, the International Society of Sports Nutrition, the American College of Sports Medicine, and recent meta-analyses on protein and body composition.

Quick numbers by body weight

For an active adult aiming for the 1.2-1.6g/kg range:

• 60kg person: 72 to 96g of protein per day
• 70kg person: 84 to 112g per day
• 80kg person: 96 to 128g per day
• 90kg person: 108 to 144g per day
• 100kg person: 120 to 160g per day

If you're specifically trying to lose fat while keeping muscle — which is what most people actually want — aim for the higher end of those ranges, or push slightly past it into 1.8-2.2g/kg territory.

Why higher protein helps with weight loss

Three things happen when you increase protein:

You feel fuller for longer. Protein increases satiety hormones like GLP-1 and peptide YY, and reduces the hunger hormone ghrelin. A study in The American Journal of Clinical Nutrition found that participants who increased protein from 15 to 30 percent of total calories voluntarily ate around 400 fewer calories per day — with no instruction to restrict. They just stopped being hungry.

Your body burns more energy digesting it. Protein has the highest thermic effect of any macronutrient — around 25 to 30 percent of its calories are burned during digestion. Carbs and fat are closer to 5 to 10 percent.

You preserve muscle during a deficit. When you lose weight in a calorie deficit, your body can lose fat and muscle. Adequate protein tilts the loss toward fat. People in low-protein deficits often look "skinny but soft" because they've lost muscle as well as fat. Higher protein protects the lean tissue that gives your body its shape and supports your metabolism.

You don't need to count grams to hit it

This is where most protein advice falls apart. People are told to "aim for 120 grams" and given no practical way to know if they're hitting it without measuring.

The simpler approach: a palm-sized serving of protein at every meal.

For most adults, a palm-sized portion of cooked protein is around 25 to 35 grams. Three to four palm-sized servings a day puts you between 75 and 140 grams — landing solidly in the active-adult and weight-loss range without measuring anything.

What counts as a "palm-sized serving":

• A piece of chicken, fish, or steak about the thickness and area of your palm
• A can of tuna
• Two eggs plus a small piece of cheese
• A cup of cottage cheese or Greek yoghurt
• A scoop of protein powder (about 25g protein)
• A serving of tofu the size of a deck of cards (for plant eaters)

The point isn't to be exact. It's to make sure protein is the anchor at every meal instead of an afterthought.

Where most people fall short

Three meal patterns where the protein typically disappears:

Breakfast. Cereal, toast, fruit, coffee — virtually no protein. The biggest single change most people can make is putting protein into breakfast. Eggs, Greek yoghurt, a protein shake, or leftover meat from dinner. Anything that puts 20-30g of protein into the first meal of the day reshapes everything downstream.

Snacks. Crackers, biscuits, fruit, chocolate — almost no protein. Easy swaps: a handful of beef jerky, a small tin of tuna, hard-boiled eggs, a glass of milk, cheese on rice cakes, a protein bar with actually decent ingredients.

Lunch on the go. Sushi rolls, sandwiches with thin meat, salads with token chicken. These often have 10-15g of protein when they should have 25-35g. The fix is asking for double protein at sandwich shops, choosing meals with two protein components (chicken AND egg, beef AND beans), or carrying something protein-dense like a tin of fish.

The myth about damaging your kidneys

One concern that keeps coming up: doesn't high protein hurt your kidneys?

For people with healthy kidneys, the evidence does not support this. Multiple reviews including position statements from the International Society of Sports Nutrition have concluded that protein intakes up to around 2.5g/kg/day are safe for healthy adults. The kidney-protein concern stems from advice given to people with existing kidney disease — for whom higher protein is genuinely problematic — and got over-generalised to the rest of the population.

If you have kidney disease or any chronic condition affecting protein metabolism, speak with your GP or dietitian. Otherwise, the safety ceiling is far higher than most people will ever reach by eating normal food.

What this looks like in practice

Here's what 110g of protein in a day actually looks like — typical for a 70-80kg active adult:

• Breakfast: Three eggs and a slice of toast — ~25g protein
• Mid-morning: Greek yoghurt with berries — ~15g protein
• Lunch: Chicken wrap with extra chicken — ~30g protein
• Afternoon: Handful of beef jerky and an apple — ~15g protein
• Dinner: Palm-sized piece of salmon, rice, vegetables — ~30g protein

Total: roughly 115g. No weighing. No tracking. Just protein as the anchor at every meal and snack.

The simplest version of all of this

If you want to ignore everything else in this post and just take one rule:

Have protein at every meal. Palm-sized portion. Don't worry about the grams. Add a protein-dense snack once or twice a day. That's it.

For most people, that single change does more for body composition, satiety, energy levels, and weight management than any other dietary intervention. It's the highest-leverage habit in nutrition and it doesn't require counting anything.

If you want help noticing whether you're actually hitting it day to day — without weighing food or tracking grams — that's part of what Rekkon does. You describe what you ate, and it works out whether your protein is on track for your body and goals. No barcode scanning, no database searching, just a quick check.

But the principle stands either way. Protein at every meal. Palm-sized. The rest sorts itself out.

Common questions

How much protein do I need per day?

For most adults, between 1.2 and 1.6 grams of protein per kilogram of body weight per day. A 70kg person needs roughly 84 to 112 grams. A 90kg person needs 108 to 144 grams. This is higher than the old 0.8g/kg RDA, which is now widely considered the minimum to prevent deficiency rather than the optimum for health, body composition, and satiety.

Is more protein better for weight loss?

Yes, up to a point. For fat loss while preserving muscle, research supports 1.8 to 2.2 grams of protein per kilogram of body weight. Higher protein increases satiety, reduces hunger hormones, and protects lean tissue during a calorie deficit. A study in The American Journal of Clinical Nutrition found that increasing protein from 15 to 30 percent of calories led to participants eating 400 fewer calories per day without restriction.

Do I need to count grams of protein to hit my target?

No. A palm-sized serving of protein at each meal usually puts you in the right range without weighing or tracking. For most adults, three to four palm-sized servings a day lands somewhere between 90 and 150 grams of protein — exactly the range research supports. Consistency matters more than precision.