What is a calorie calculator, and how does it work?

The Isahayata.com calorie calculator is an online tool that can calculate the calorie consumption of an individual and give you an idea of whether you should maintain your current body weight or lose it. This tool does the calculation based on the person’s personal measurement factors, which include age, gender, height, weight, and their activity level.

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How do your measurement factors work?

• Age: Age is a measuring factor that affects metabolism. 
• Gender: Both male and female body types are different, and their calorie intake is also different; in that case, gender also plays a role in calorie calculations.
• Height: Height is an important factor. Those who are taller require more calories as compared to short-height people.
• Weight: The current weight of an individual is an important part of calculating the basal metabolic rate (BMR).
• Activity Level: Every person has a different body type as per their lifestyle; in that case, those people are very active and require more calories as compared to those who are sedentary.

At the time of calorie calculation, the above information will be required to calculate the calories at the Isahayata.com calorie calculator.

The Formula Behind the Calorie Calculator

There are three types of formulas. Harris-Benedict Equation, Mifflin-St. Jeor Equation

And Total Daily Energy Expenditure (TDEE), which works behind the online calorie calculator tool logic. Taking an example of each formula and calculating the calorie intake.

• Harris-Benedict Equation

This is an older equation that was used to calculate the basal metabolic rate (BMR) intake of an individual.

Men:
BMR = 88.362 + (13.397 × weight in kg) + (4.799 × height in cm) + (5.677 × age in years)

Women:
BMR = 447.593 + (9.247 × weight in kg) + (3.098 × height in cm) + (4.330 × age in years)

• Mifflin-St. Jeor Equation

As per some experts, the Mifflin-St. Jeor Equation gives a more accurate basal metabolic rate (BMR) result, and this formula works as given below.

Men:
BMR = (10 × weight in kg) + (6.25 × height in cm) – (5 × age in years) + 5

Women:
BMR = (10 × weight in kg) + (6.25 × height in cm) – (5 × age in years) – 161

• Total Daily Energy Expenditure (TDEE)

Both the Harris-Benedict Equation and the Mifflin-St Jeor Equation have calculated the basal metabolic rate; after that, the Total Daily Energy Expenditure (TDEE) multiplies the values as per the activity level.

• Sedentary: BMR Value × 1.2
• Lightly active: BMR value × 1.375
• Moderately active: BMR value × 1.55
• Very active: BMR Value × 1.725
• Extra active: BMR Value × 1.9

Minimum calorie intake recommendation by the World Health Organization

The World Health Organization is an international agency of the United Nations that is responsible for intentional public health. As per this WHO, an average woman who does moderate physical activity on a daily basis requires around 2000 calories as compared to an average man, who does moderate activity on a daily basis and requires around 2500 calories. This is an estimated number; the actual number may be slightly different.

Food Table with Serving Sizes and Calories: