About the Fat Intake Calculator
Fat is a major source of energy and is needed for hormones, vitamins and healthy cells. It also has the most calories per gram, 9 compared with 4 for carbohydrates and protein. This calculator turns your daily calories into a target range for fat in grams, based on the 20 to 35 percent range recommended by most health authorities. It also works out the limit for saturated fat from the percentage you choose, usually under 10 percent of calories, and gives a rough amount per meal. You can change the range if your own plan, for example a low-fat diet or a higher-fat way of eating, uses different numbers.
Updated October 2026
How to use the Fat Intake Calculator
- 1Enter your daily calories.
- 2Set the low and high end of your fat range, or keep 20 to 35 percent.
- 3Set the saturated fat limit as a share of calories.
- 4Read the daily range in grams and the saturated fat limit.
- 5Use the per-meal figure when you plan menus.
Worked example
Someone eating 2,200 calories a day with the standard range of 20 to 35 percent should eat roughly 49 to 86 grams of fat. A saturated fat limit of 10 percent is 24 grams. If a medium avocado has about 29 grams of fat, a tablespoon of olive oil 14 grams and a handful of almonds 14 grams, you can see how quickly the grams add up even from healthy sources.
Tips for choosing fats
- Cook with olive or rapeseed oil.
- Eat fish twice a week, including one oily fish.
- Snack on nuts instead of pastries.
- Choose lean cuts and trim visible fat.
- Check labels for saturated fat and trans fat.
Reading food labels
Labels list total fat and saturated fat in grams per serving or per 100 g. Compare the figures with your daily numbers. A pastry with 15 grams of fat and 8 of saturated fat uses a third of the limit. Remember that portion sizes on labels may be smaller than what you eat, so multiply accordingly.
Related tools
The Macro Calculator and Carbohydrate Calculator cover the other macronutrients, the Protein Calculator works out protein, the Calorie Calculator and TDEE Calculator set your calories, and the Cholesterol Ratio Calculator interprets lipid results.
Features
- Fat range in grams per day
- Saturated fat maximum
- Per-meal guide
- Adjustable percentages
- Calories from fat shown
- Free and private
Frequently asked questions
How much fat should I eat a day?
Most guidelines suggest 20 to 35 percent of calories from fat. On 2,200 calories that is about 49 to 86 grams a day. Aiming for the middle of the range works well for most people.
How do I convert calories to grams of fat?
Multiply your calories by the fat percentage, then divide by 9. For 2,200 calories at 30 percent, 660 calories come from fat, which is 73 grams.
How much saturated fat is too much?
Many guidelines say less than 10 percent of calories, and the American Heart Association suggests 5 to 6 percent for people who need to lower their cholesterol. On 2,200 calories, 10 percent is about 24 grams.
Which fats are healthiest?
Unsaturated fats from olive oil, nuts, seeds, avocados and oily fish are generally best for heart health. Limit saturated fats from fatty meat and full-fat dairy, and avoid industrially made trans fats.
Is a low-fat diet better for weight loss?
Not necessarily. Weight loss depends on total calories, and studies find that low-fat and low-carb diets can work equally well for people who stick to them. Pick the pattern you can maintain.
What if I eat a very low or high-fat diet?
Very low-fat diets, below 15 percent, can reduce vitamin absorption, and very high-fat diets such as keto go well above 35 percent. Change the range boxes to match your plan and discuss it with a professional.