Carnivore Macros Calculator
Turn a calorie target into carnivore-diet macros — grams of fat and protein at a chosen fat-to-protein ratio, plus roughly how much fatty beef that is.
How it works
Fat g = kcal × fat% ÷ 9 · Protein g = kcal × protein% ÷ 4 · Beef = kcal ÷ 254 × 100 g (80/20 cooked)
The carnivore diet eats only animal foods, so carbohydrate is essentially zero and calories come almost entirely from fat and protein. Most followers keep fat as the majority of calories — commonly around 70% — because relying too heavily on lean protein can be hard to sustain and digest. This tool splits your calorie target into fat and protein grams and translates it into an intuitive weight of fatty ground beef.
Worked example
At 2,200 kcal on the standard 70/30 split: fat = 2,200 × 0.70 ÷ 9 ≈ 171 g, protein = 2,200 × 0.30 ÷ 4 = 165 g. That is about 2,200 ÷ 254 × 100 ≈ 866 g, or roughly 1.9 lb of 80/20 ground beef.
Frequently asked questions
Why is fat kept so high on carnivore?
With carbohydrate removed, fat becomes the main energy source. Very high lean-protein intakes can be difficult to eat and digest, so most carnivore eaters favour fattier cuts to hit their calories comfortably.
Are there really no carbs?
Muscle meat and most animal foods contain negligible carbohydrate, so a strict carnivore diet is effectively zero-carb. Small amounts appear only in foods like liver or dairy if those are included.
Can I use cuts other than ground beef?
Yes — the beef figure is just an intuitive reference. Any mix of ribeye, salmon, eggs, butter and other animal foods that lands near your fat and protein grams works the same way.
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Educational estimate for meal planning, not medical or nutrition advice. Serving thresholds and needs vary by person — check with a dietitian for medical diets.