Fat Intake Calculator

Convert fat percentages to grams

Dietary fat provides about 9 kilocalories per gram. To convert a percentage of daily calories into grams, multiply total calories by the percentage and divide by 9.

At 2,000 calories and 30% from fat, the calculation is 2,000 × 0.30 ÷ 9, or about 66.7 grams of total fat. The calculator performs the same conversion for the saturated-fat percentage you enter.

Use percentages as planning inputs

This tool does not prescribe a dietary pattern. Total-fat needs can vary with total calories, sport, medical conditions, food preferences and the balance of carbohydrate and protein.

If you are following a clinician-directed diet, enter the percentages or gram targets provided by your healthcare professional rather than treating the defaults as individualized advice.

Fat type matters

Total grams do not describe the types of fat in a diet. Unsaturated fats, saturated fats and trans fats have different nutritional implications.

Use the calculator for arithmetic, then consider overall food quality and current dietary guidance when choosing foods.

Important information

This calculator is for general education and planning. It is not a diagnosis, medical device or substitute for individualized healthcare advice. Measurements and formula estimates can differ from clinical assessments.

If the result could affect treatment, pregnancy care, medication, driving, military status or another safety-sensitive decision, confirm it with the appropriate qualified professional or official process.

Frequently Asked Questions

How many calories are in a gram of fat?

About 9 kilocalories per gram.

Is the saturated-fat field a recommendation?

No. It is an editable planning input so you can convert a percentage target into grams.

Can I compare fat with carbohydrate grams?

Yes. Use the related carbohydrate and macro calculators to translate other calorie percentages into grams.