# Calorie Calculator

## Meaning of calorie

A calorie is officially regarded as a unit of energy. Whenever a person eats and drinks something, he or she gains calories, it is also related to the using of energy during the physical work. Consumption of calories varies from person to person. It depends upon the level of work a person does, other factors like, height, gender are a catalyst for calorie consumption. Everyone requires different amounts of energy per day depending on age, size and activity levels. The calorie calculator will help the user to calculate the number of calories he or she needs to consume each day.

If a person wishes to keep his or her current weight the same, then it is required that the person should eat proper food and must take better nutrition in order to take up the calories which are being lost in the exercise or physical labor. What one loses is same as what one gains. A person needs to abide by the formula of inverse proportionality. It means that when the calories decrease the calories being consumed should increase at the same rate.

However, if in case a person is losing weight than one should consume fewer calories. It is very important that the food which gives energy must be consumed because many people become weak when they try to lose weight because they start to starve. There is a calculation that will be beneficial for everyone who abides by it. Kindly, consider this generic example, depending upon the gender, physical structure a person may require to take 2,000 calories. In case of losing weight, the same person should eat food which gives him or her 1,500 or 1,000 calories. That means the food that a person consumes must have 500 or 1,000 calories lower.

Those people aiming to burn more calories have to do more physical work. They must eat food rich in energy and low in calories. People who are thin must take more calories compared to people with bulky bodies. If one wants to gain weight then the calories consumed should be more than the calories being lost. An idea of caloric-dense diet will be able to help them out with it.

## Basal Metabolic Rate (BMR)

While discussing calories one should know about basal metabolic rate at which a human requires calories when his or her body is not working and is at rest. It all is needed for the different functioning of the body, such as maintaining the process of breathing, blood flow, regulating the temperature of body, cell development, functioning of brain and nervous system, and working of muscles.

The BMR is responsible for around 60% to 75% of the calorie requirement on a daily basis. Please, see the percentage ratio below:

• Brain: 19%
• Heart: 7%
• Kidneys: 10%
• Liver: 25%
• Other Organs: 19%
• Skeletal Muscle: 18%

The basal metabolic rate is not the same for everyone. The characteristics which have a direct impact upon the BMR include weight, sex, height, surface area, structure, temperature, age, hormones, etc. The following details will highlight the important details about metabolism:

• Males have a higher metabolism than females.
• When the age of a person increases, it decreases.
• It is present more in the muscle tissues.
• It has less existence in fat tissues.
• They go up as weight, height and body temperature of a person increase.
• Poor health leads to higher metabolism.
• Metabolism has a relation with T4 hormone levels.

## Why is the calorie calculator needed?

The calorie calculator designed by Softo takes a look at the calorie needed by a human on a daily basis according to one’s weight, height, age, and physical work. We suggest everyone use our calculator in order to see the number of calories needed to stay healthy. It will help everyone to maintain weight, it will also give an idea to the people about the number of calories required to burn. Later on, the people can also make use of Macro-calculator and Weight-loss calculator. All of these calculators will help its users to maintain a healthy lifestyle.

The mechanism which is involved in the calorie calculator involves a few equations and the outcome of the calculator focuses on ball-park average (rough idea).

The Harris-Benedict Equation was launched initially to compute basal metabolic rate (BMR), it is the level of energy lost each day during the rest. In the year 1984, it was modified to a better level and it was used till the year 1990, with the help of Mifflin-St Jeor Equation. The Mifflin-St Jeor Equation is used to compute BMR, and it shows better than the earlier version. However, there is another one called Katch-McArdle Formula which follows a changed procedure as it computes Resting Daily Energy Expenditure (RDEE). This actually considers the thin body figures, it is not done by Mifflin-St Jeor and the Harris-Benedict Equation.

One should know that the Mifflin-St Jeor Equation is a sophisticated equation to calculate BMR. Furthermore, the Katch-McArdle Formula is appropriate for those who are thin and it informs the user about the percentage of fatness in the body. The calculator uses the following equations.

### Katch-McArdle Formula

BMR = 370 + 21.6(1 - F)W

where:

W is body weight in kilograms
H is body height in centimeters
A is age
F is body fat in percentage

### Mifflin-St Jeor Equation:

For men:                                  BMR = 10W + 6.25H - 5A + 5

For women:                             BMR = 10W + 6.25H - 5A - 161

### Revised Harris-Benedict Equation:

For men:                                  BMR = 13.397W + 4.799H - 5.677A + 88.362

For women:                             BMR = 9.247W + 3.098H - 4.330A + 447.593

The figure which comes up after the computation from these equations is the rough estimate of the calories user has to take daily in order to keep a standard weight of the body, but the user should take rest as well. There is an activity factor (generally 1.2-1.95) multiplied by the number obtained. It depends on the exercise which a person does. The 1 pound is equal to 0.45 kg, which is around 3,500 calories. For example, those who wish to reduce 1 pound every week, can reduce 500 calories from their calorie intake. The key to maintaining better weight and a healthy lifestyle is proper exercise and the using of the calorie calculator.