Calculating the number of calories you should eat depends on several factors including your age, gender, weight, height, activity level, and weight loss or maintenance goals. Here’s a general guideline to help you determine your daily calorie needs:
- Step 1: Calculate your Basal Metabolic Rate (BMR) using the Harris-Benedict Equation.
- For men: BMR = 88.362 + (13.397 x weight in lbs) + (4.799 x height in inches) – (5.677 x age in years)
- For women: BMR = 447.593 + (9.247 x weight in lbs) + (3.098 x height in inches) – (4.330 x age in years)
- Step 2: Factor in your activity level by multiplying your BMR by an activity factor. Choose from sedentary to very active levels.
- Sedentary: BMR x 1.2
- Very active: BMR x 1.9
- Step 3: Set your calorie goal based on your weight loss or maintenance needs. Aim for a deficit of 500 to 1000 calories per day for gradual weight loss.
EXAMPLE: women who are 30years old, 160 pound and 5’5 foot tall ( 65 inches)
BMR = 447.593 + (9.247 x weight in lbs) + (3.098 x height in inches) – (4.330 x age in years)
BMR = 447.593 + (9.247 x 160) + (3.098 x 65) – (4.330 x 30)
BMR ≈ 447.593 + 1479.52 + 201.07 – 129.9
BMR ≈ 1997.283 calories per day
Now, let’s calculate your TDEE by multiplying your BMR by the sedentary activity level multiplier:
TDEE = BMR x Activity Factor
TDEE ≈ 1997.283 x 1.2
TDEE ≈ 2396.74 calories per day
So, to maintain your current weight, you should aim to consume around 2396.74 calories per day. If you’re looking to lose weight, you may want to create a calorie deficit by consuming fewer calories than this number, aiming for a safe deficit of 300 to 500 calories per day for gradual weight loss. Remember to prioritize nutrient-dense foods and listen to your body’s hunger and fullness cues.