Grams to Calories Converter
Convert Grams to Calories
Formula
Fat: 1g = 9 cal | Protein: 1g = 4 cal | Carbs: 1g = 4 cal | Alcohol: 1g = 7 cal | 1 cal = 4.184 kJ
Frequently Asked Questions
How many calories are in 1 gram of fat?
1 gram of fat contains 9 calories. Fat is the most calorie-dense macronutrient, providing more than double the calories per gram compared to protein or carbohydrates (4 cal/g each).
How do I calculate calories from grams?
Multiply grams by the calorie factor: Fat = grams × 9, Protein = grams × 4, Carbohydrates = grams × 4, Alcohol = grams × 7. For example, 20g of fat = 180 calories.
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