Dietary guidelines (the AMDR) recommend that 20–35% of your daily calories come from fat. Since fat provides 9 calories per gram, this calculator converts your calorie target into grams of fat, shows the full healthy range, and gives a saturated-fat limit of under 10% of calories.
Reviewed: June 20, 2026 · Author: Naveen P N, Founder — AI Calculator · Verified against: AMDR macronutrient guideline, recomputed in code.
The formula
Fat is the most energy-dense macronutrient at 9 calories per gram, versus 4 for protein and carbohydrate. To find grams, take the share of calories you want from fat — somewhere in the 20–35% band — multiply by your total calories, and divide by 9. Most guidelines add that saturated fat should stay under about 10% of calories, with the rest coming mainly from unsaturated sources.
Worked examples
2000 kcal, balanced 30%:
The 20–35% range at 2000 kcal:
Saturated-fat limit (<10%):
At 2500 calories the same 30% target rises to about 83 g of fat, with a 56–97 g healthy range and a saturated-fat ceiling near 28 g. Pick the level that fits your goals and the type of fats you eat.
Frequently Asked Questions
20–35% of calories (AMDR). On 2000 kcal that's ~44–78 g; 30% ≈ 67 g.
Calories × fat% ÷ 9. 2000 × 0.30 ÷ 9 ≈ 67 g.
Keep it under ~10% of calories — about 22 g on 2000 kcal.
No — it's essential for vitamins and hormones. Favour unsaturated; limit saturated and trans fats.
No. It's general AMDR-based guidance — see a doctor or dietitian for personalized targets.