Fat per Day Healthy Weight

Healthy daily fat intake per body weight

Fat recommendations are usually given as a share of your total daily energy, not as grams per kg of body weight. To turn that share into grams, use fat_g/day = (kcal_total × %fat) / 9, since each gram of fat carries 9 kcal.

The reference ranges (WHO 2023, FAO/WHO 2010, AHA) put total fat at 20–35 % of calories for adults and saturated fat below < 10 %, with the AHA pushing under 6 % when cardiovascular risk is a concern. Trans fats should be 0 % (the WHO REPLACE initiative), and EPA + DHA omega-3 lands at 250–500 mg/day (EFSA, 2012). Run the numbers on a 2,000 kcal diet at 30 % fat and you get roughly 67 g/day.

Applications

This kind of estimate shows up in cardiovascular prevention diets, Mediterranean and DASH meal plans, weight-loss protocols, and when designing a ketogenic diet, where fat climbs to 70–80 % of calories. Good sources to lean on are extra-virgin olive oil, avocado, nuts and seeds such as almonds, walnuts, chia and flax, fatty fish like salmon, sardines and tuna, and whole eggs. In Brazil, fat composition labelling is regulated by ANVISA RDC 269/2005 and RDC 429/2020 (front-of-pack nutrition labelling).

FAQ

Is saturated fat really harmful? The current consensus from the AHA and WHO ties a high saturated-fat intake to higher LDL cholesterol and greater cardiovascular risk. Swapping some of it for unsaturated fats brings that risk down.

Do I need omega-3 supplements? Generally only if you eat fatty fish less than twice a week. Food sources come first, and any supplement is worth running past a healthcare professional.

Does this calculator replace a nutritionist? No. What it gives you are educational estimates built on WHO, AHA, EFSA and ANVISA references. An individual prescription still needs a registered dietitian or physician.