So if you're on a 2,000-calorie-a-day diet, 400 to 700 calories can come from dietary fat, which translates to between 44 and 78 fat grams a day. The latest Dietary Guidelines for Americans recommends keeping saturated fat to less than 10 percent of calories a day. For a 2,000-calorie-a-day diet, that's 200 calories or about 22 grams of saturated fat. Use the Nutrition Facts label to find out how much fat is in the foods you eat.
http://www.mayoclinic.org/healthy-lifestyle/nutrition-and-healthy-eating/expert-answers/fat-grams/faq-20058496
With little effort I can find evidence in obesity journals that fat has anywhere between 8.7 (Ref 2) and 9.5 (Ref 3) calories per gram. The same obesity journal that says that human fat tissue can be 87% lipid also says that it may be 72% lipid (Ref 4).
http://www.zoeharcombe.com/standalone/1lb-does-not-equal-3500-calories/
It's recommended that fat make up no more than 30 percent of your daily diet (meaning less than or equal to 30 percent of total calories a day from fat). Although it is important to watch both calories and fat grams, it's best to focus on the total number of calories consumed, which often seems to be forgotten.
http://goaskalice.columbia.edu/answered-questions/whats-more-important-calories-or-fat-grams
**estimated daily calories needed for a 167-lb. person to maintain his or her weight. †To calculate the recommended fat intake (for a person trying to maintain weight): multiply daily caloric needs (15 calories per lb. of body weight) by .3 (30% of calories), then divide by 9 (number of calories per gram of fat).
http://caloriecontrol.org/converting-calories-to-grams-of-fat/
One of the most commonly held diet myths is To lose one pound of fat you need to create a deficit of 3,500 calories. This is wrong at every level. First of all, one pound does not equal 3,500 calories, as we will show below.
http://www.zoeharcombe.com/standalone/1lb-does-not-equal-3500-calories/
Unused energy is converted and stored as excess body fat. The amount of calories a person needs is based on body weight, age, gender and physical activity level. Generally, 1200 to 1400 calories per day is considered low, and anything above 2400 is considered too much. To find out how many calories you should be getting a day, check out the MyPlate website.
http://goaskalice.columbia.edu/answered-questions/whats-more-important-calories-or-fat-grams
1 Divide 400 calories by 9 (calories a gram) to get about 44 grams of fat.  Divide 700 calories by 9 (calories a gram) to get about 78 grams of fat.
http://www.mayoclinic.org/healthy-lifestyle/nutrition-and-healthy-eating/expert-answers/fat-grams/faq-20058496
2) Fat has nine calories per gram (this is the universally accepted conversion, but it is an estimate and significantly rounded down from even the original estimate); 3) Human fat tissue is approximately 87% lipid (this is a widely accepted conversion, but it is also an estimate). Putting these together, we can derive the sum that 454 grams of body fat tissue has approximately the calorific energy of 395 grams of pure fat (454 grams x 87%), that is 3,555 calories (395 grams x 9).
http://www.zoeharcombe.com/standalone/1lb-does-not-equal-3500-calories/
How many fat grams is that? There are 9 calories in a gram of fat, so you divide the number of calories by 9. 1  Divide 400 calories by 9 (calories a gram) to get about 44 grams of fat.  Divide 700 calories by 9 (calories a gram) to get about 78 grams of fat.
http://www.mayoclinic.org/healthy-lifestyle/nutrition-and-healthy-eating/expert-answers/fat-grams/faq-20058496
Fat is an essential nutrient that helps the body transport and absorb fat-soluble vitamins (e.g., A, D, E, and K), among other functions. Whereas proteins and carbohydrates have only four calories of energy per gram, fat has nine. Food labels are federally standardized to help make it easier for the consumer to know what's in a particular food.
http://goaskalice.columbia.edu/answered-questions/whats-more-important-calories-or-fat-grams
calories of fat per gram
There are 9 calories of fat per gram. The amount of calories of fat per gram is 9 calories.