Comprehensive Calculator Guide
This calculator turns the share of calories you want from fat into grams and works out your saturated fat limit. At 2,000 calories and 30% you need about 67 g of fat a day, with no more than 22 g saturated. It shows the adult range of 20–35% of calories and where your share falls in it.
How much and which kind
Each gram of fat gives 9 calories, more than twice carbs or protein. Your body still needs it to absorb vitamins A, D, E and K and make hormones, so adults are advised to get 20–35% of calories from fat.
Unsaturated fats in olive oil, nuts, avocado and oily fish are good for the heart. Keep saturated fat (ghee, butter, meat fat, palm oil) under 10% of calories and avoid industrial trans fat.
How to Use
- Enter your daily calories.
- Enter the share of calories from fat; 30% if unsure.
- Press “Calculate fat” to see daily grams, the saturated limit and the 20–35% range.
Formula Used
Fat (g) = calories × share ÷ 100 ÷ 9 | Saturated limit = calories × 10% ÷ 9
Practical Examples
- Example 1
- 2,000 calories at 30%: 67 g, saturated under 22 g.
- Example 2
- 2,500 calories at 35%: 97 g, saturated under 28 g.
Important Tips
- A tablespoon of oil holds about 13.5 g of fat — measure it when cooking.
Common Mistakes to Avoid
- Dividing by 4 instead of 9 when converting fat calories to grams.
Frequently Asked Questions
- How much fat do I need a day?
- 20–35% of calories: 44–78 g on 2,000 calories.
- What is the saturated fat limit?
- Under 10% of calories, about 22 g on 2,000 calories.
- How do I convert fat calories to grams?
- Divide by 9.