How To Calculate Your Daily Caloric Need
In order to calculate your daily caloric need, you need to figure out your Total Daily Energy Expenditure (TDEE), which is the total amount of calories your body burns during a day, including all activity.
The first step is to calculate your Basal Metabolic Rate (BMR), which is the amount of calories your body needs to in order to function - this excludes any activity. Basically, its the amount of calories you would burn if you were to just sit in one place all day. To calculate this, I suggest using the Harris-Benedict Formula since it takes into account body weight, height, sex, and age, making it more accurate.
Men
BMR = 66 + (13.7 x weight in kg) + (5 x height in cm) - (6.8 x age in years)
Women
BMR = 655 + (9.6 x weight in kg) + (1.8 x height in cm) - (4.7 x age in years)
Now that you have your BMR, the next step is to calculate your TDEE. TDEE takes into account 2 factors:
Thermic Affect of Activity (TEA) - the amount of calories you burn while exercising/physically active
Thermic Effect of Eating (TEF) - calories used to assist in digestion and absorption (about 5% of your caloric need). Foods high in protein and fiber will cause a greater effect.
Based on your activity levels, you take the number associated with that level and multiply it by your BMR. **(TDEE = activity level x BMR)
Sedentary (no activity) = BMR x 1.2
Lightly active (light exercise 1-3 days/week) = BMR x 1.375
Moderately active (moderate exercise 3-5 days/week) = BMR x 1.55
Very active (hard exercise 6-7 days/week) = BMR x 1.725
Extremely active (hard exercise 2 or more times/day) = BMR x 1.9
The number you get for your TDEE is the amount of calories you need to MAINTAIN your body weight.
If you want to lose weight, you will have to reduce your calorie intake or increase your activity. There are 3500 calories in 1lb or 0.45kg of fat. The recommendation is to decrease your caloric intake by 500 calories in order to lose 1lb or 0.45kg of fat per week.
If you are looking to gain weight in the form of muscle mass, it is recommended that you eat a surplus of calories on your training days (anywhere from 200 - 600 calories > on the lower end for women and the higher end for men) and ingest your TDEE maintenance calories on your rest days.













