Daily Fat Intake Calculator
Calculate your recommended daily fat intake based on your calorie needs and health goals.
Find target grams of total fat, saturated fat, and unsaturated fat.
Dietary Fat: Why It Matters
Fat is an essential macronutrient. It provides 9 kilocalories per gram — more than twice the energy of protein or carbohydrates (both 4 kcal/g). Fat is necessary for absorbing fat-soluble vitamins (A, D, E, K), producing hormones, insulating and protecting organs, and maintaining cell membranes.
Types of Dietary Fat
Saturated fat — found in animal products (meat, butter, cheese) and tropical oils (coconut, palm). Raises LDL cholesterol. Most guidelines recommend keeping it below 10% of total calories.
Monounsaturated fat (MUFA) — found in olive oil, avocados, and nuts. Raises HDL and lowers LDL. Associated with heart health (Mediterranean diet).
Polyunsaturated fat (PUFA) — includes omega-3 (fatty fish, flaxseed, walnuts) and omega-6 (vegetable oils). Omega-3 fatty acids (EPA and DHA) reduce inflammation and support brain and heart health.
Trans fat — artificially produced by hydrogenating vegetable oils. Raises LDL and lowers HDL simultaneously. Now largely banned in the US and many countries. Target: 0 g/day.
How Much Fat Do You Need?
The calculation: Fat grams = (Daily Calories × Fat%) / 9
Standard diet (25–35% fat): For a 2,000-calorie diet: 56–78 g fat/day.
Low-fat diet (15–25%): 33–56 g fat/day. Used for certain heart conditions and weight-loss programs.
Ketogenic/high-fat diet (60–75%): 133–167 g fat/day. The keto diet uses fat as the primary fuel source, replacing carbohydrates. This induces ketosis — a metabolic state where the liver produces ketones from fat for energy.
Saturated Fat Limit
Regardless of total fat intake, saturated fat should stay below 10% of daily calories per most health guidelines (AHA, WHO). At 2,000 calories, that is 22 g of saturated fat per day (200 kcal / 9 kcal/g).
Practical Tips
Healthy fat sources include olive oil, avocado, nuts, seeds, and fatty fish. Limit red meat, full-fat dairy, and fried foods. Use olive oil for cooking instead of butter when possible. Read nutrition labels — serving sizes can be misleading.