How To Calculate Required Calories Per Day

Required Daily Calories: 0 calories


Understanding your daily calorie needs is essential for maintaining a healthy and balanced diet. The “How To Calculate Required Calories Per Day” calculator is a practical tool that estimates your daily calorie requirements based on your weight, height, age, gender, and activity level. Whether you aim to maintain your current weight, lose weight, or gain muscle, knowing your required calorie intake is a crucial step in your nutritional journey.


The calculator uses two distinct formulas to calculate daily calorie needs based on gender:

For males: Required Calorie Needs = 66 + (6.23 * weight) + (12.7 * height) – (6.8 * age)

For females: Required Calorie Needs = 655 + (4.35 * weight) + (4.7 * height) – (4.7 * age)

These formulas consider factors such as weight, height, age, and gender to provide a personalized calorie estimate. The calculator then adjusts this estimate based on your selected activity level, using a multiplier to account for daily energy expenditure.

How to Use

Using the calculator is straightforward. Here’s how to do it:

  1. Enter your weight in pounds in the “Your Weight” field.
  2. Input your height in inches in the “Your Height” field.
  3. Add your age in the “Your Age” field.
  4. Select your gender from the dropdown menu.
  5. Choose your activity level from the “Activity Level” dropdown.
  6. Click the “Calculate” button, and the estimated daily required calories will be displayed.


For example, if you are a 35-year-old male who weighs 180 pounds, is 70 inches tall, and maintains a moderately active lifestyle, you can calculate your required daily calories as follows:

Required Calorie Needs = 66 + (6.23 * 180) + (12.7 * 70) – (6.8 * 35) = 2,320.6 calories per day

With a moderately active lifestyle, your daily required calories would be 2,320.6 * 1.55 = 3,592.43 calories per day.


  1. Why is it important to calculate my daily required calories? Knowing your calorie needs is vital for maintaining or managing your weight and overall health.
  2. How accurate is this calculator? This calculator provides a reasonable estimate, but individual variation can affect actual calorie requirements.
  3. What does the activity level selection mean? Your activity level impacts how many calories you burn each day and, consequently, how many calories you should consume.
  4. Are there different formulas for males and females? Yes, the formulas account for gender-specific metabolic differences.
  5. Is consulting a nutritionist or dietitian necessary for personalized advice? Professional guidance can be helpful for precise dietary planning.
  6. Can I use this calculator if I prefer the metric system? Convert your weight and height to pounds and inches for accurate results.
  7. Is there an age limit for using this calculator? The calculator is suitable for adults and older teenagers.
  8. Can I use this calculator for specific fitness goals, such as weight loss or muscle gain? Adjust your calorie intake above or below the calculated value to align with your goals.
  9. What are the potential consequences of consuming too few calories? Severe calorie restriction can lead to nutritional deficiencies and health issues.
  10. When should I recalculate my required daily calories? It’s advisable to recalculate when significant changes occur in your weight or activity level.


The “How To Calculate Required Calories Per Day” calculator is a valuable tool for estimating your daily calorie needs. While it offers practical estimates, individual factors may affect your actual calorie requirements. Understanding your required daily calories is a fundamental step in managing your diet and working towards your nutritional goals, whether your aim is to maintain, lose, or gain weight.

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