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Saturated Fat Limit Calculator

Enter your daily calories to see your saturated fat limit under both guidelines.

How it is calculated

Only one input is used, your daily calories. Saturated fat is limited as a share of energy, and fat provides 9 kcal per gram, so general limit (g) = calories × 0.10 ÷ 9 and heart-healthy limit (g) = calories × 0.06 ÷ 9. The difference is general − heart-healthy, which equals calories × 0.04 ÷ 9. The two percentages (10% and 6%) are fixed in the tool and cannot be changed, so a 5% target is not available. Limits are rounded to whole grams and the difference to two decimals. They are upper limits for the day, not goals, and recommendations for children or for people with specific medical conditions can differ.

Worked example

A diet of 2000 kcal a day. General limit: 2000 × 0.10 = 200 kcal, and 200 ÷ 9 = 22.2, shown as 22 g. Heart-healthy limit: 2000 × 0.06 = 120 kcal, and 120 ÷ 9 = 13.3, shown as 13 g. The difference is 22.22 − 13.33 = 8.89 g, calculated from unrounded values, so it is not the same as 22 − 13.

Try this example →

Common mistakes

  • Entering a fat target in the calories box. The input is total daily energy intake in kcal, not grams of fat or calories from fat.
  • Comparing the result with total fat on a label. The limit is for saturated fat only, which is the separate line listed under total fat.
  • Subtracting the rounded limits by hand (22 − 13 = 9) and thinking the 8.89 g difference is wrong. The tool subtracts the unrounded values.
  • Using the calories you eat on a diet day when your usual intake is higher. The limit scales with the calories you enter, so use a typical day.
  • Treating the grams as a target to reach. They are caps, and eating less saturated fat is not a problem as long as total fat and calories are adequate.

Sources

About this calculator

This calculator sets a daily saturated fat limit based on two different guideline thresholds, both expressed as a percentage of total daily calories rather than a fixed gram amount, since fat needs scale with how much someone eats overall. The Dietary Guidelines for Americans (DGA) sets the general population limit at less than 10% of calories from saturated fat.

The American Heart Association (AHA) recommends a notably stricter target, which this calculator applies as 6% of calories, specifically for people who need to lower their LDL ('bad') cholesterol or who are at elevated cardiovascular risk, reflecting the strong link between saturated fat intake and blood cholesterol levels that drive atherosclerosis and heart disease.

Dietitians and people managing cholesterol or cardiovascular risk use both benchmarks side by side — entering daily calorie intake to see the corresponding gram limit under the general DGA guideline versus the stricter heart-healthy AHA target, making it easy to see how much stricter the cardiac-focused recommendation actually is.

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