Fat Intake Calculator
Enter your daily calories and this calculator shows a healthy range for total fat and your upper limit for saturated fat, based on dietary guidelines.
The Acceptable Macronutrient Distribution Range (AMDR) recommends that 20% to 35% of daily calories come from dietary fats. On a 2,000 kcal diet, that equals 44 to 78 grams of fat per day, with saturated fat kept under 10% (22 grams).
Recommended Daily Fat Intake
AMDR Healthy RangeTargeting 20% to 35% of 2,000 kcal. The Acceptable Macronutrient Distribution Range (AMDR) recommends 20% to 35% of daily calories from dietary fats. A minimum floor of 0.5 g/kg is vital for hormone production and fat-soluble vitamin absorption.
Dietary Fat Tier Breakdown
| Intake Tier | Calories % | Daily Grams | Calories from Fat |
|---|---|---|---|
| Low-Fat Diet | 20% | 44 g | 396 kcal |
| Moderate (Balanced) | 27.5% | 61 g | 549 kcal |
| Higher Fat / Low-Carb | 35% | 78 g | 702 kcal |
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Clinical Equations
WHO, CDC, ACSM & Mifflin-St Jeor
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How to use Fat Intake Calculator
- 1Enter your daily calorie intake or calculated TDEE.
- 2Enter your body weight to verify the 0.5 g/kg hormone health floor.
- 3View your low, moderate, and high fat intake targets in grams and calories.
Why dietary fat is essential
Fats are required for sex hormone production (including testosterone and estrogen), cellular membrane structure, and the absorption of fat-soluble vitamins (A, D, E, K).
Never drop total fat below 0.5 g/kg of body weight for extended periods, even during extreme cutting phases.
Frequently Asked Questions
How much fat should I eat a day?
20 to 35% of calories, about 44 to 78 g on a 2,000 kcal diet.
How much saturated fat is too much?
Less than 10% of calories, about 22 g or less on 2,000 kcal.
Does eating fat make you fat?
No single nutrient does; weight gain comes from a sustained calorie surplus.
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Scientific Sources & Evidence
- World Health Organization (WHO) — Body Mass Index Classification
- CDC Growth Charts — BMI-for-age LMS Percentiles
- Mifflin et al. (1990) — Basal Metabolic Rate Predictive Equations
- NICE Guideline NG246 — Identification and Management of Overweight and Obesity
- American College of Sports Medicine (ACSM) — Exercise Testing & Prescription
- European Food Safety Authority (EFSA) — Dietary Reference Values for Water