Multiply your target daily calorie intake by 0.4 and divide the result by 4 to figure out your target daily protein intake (in grams). Multiply your target daily calorie intake by 0.4 and divide the result by 4 to figure out your target daily carbohydrate intake. Multiply your target daily calorie intake by 0.2 and divide the result by 9 to figure out your target daily fat intake.