Calorie Calculator

calorie calculator

The findings of this Calorie Calculator are based on an approximated average and are based on numerous equations. Basal metabolic rate (BMR) is first calculated by The Harris-Benedict Equation or the daily amount of energy wasted while at rest in 1984, it was revised to make it more accurate. However, until 1990, when the Mifflin-St Jeor Equation was introduced, it was employed. BMR is calculated using the Mifflin-St Jeor Equation, which has been demonstrated to be more accurate than the revised Harris-Benedict Equation.

Calories are energy units. It is concerned with the energy gotten from beverages and foods. In addition to the energy expended during physical activity.

The following are some calorie facts:

  • Calories are necessary for human survival. The secret is to consume the proper amount of food.
  • Everyone requires varying quantities of energy throughout the day, depending on their age, gender, size, and degree of activity.
  • Fast food accounts for more than 11% of all calories consumed in the United States.
  • Foods that are high in energy but deficient in nutrients are empty calories. 

Calories and Health

To survive, the human body needs calories. The body’s cells would perish without energy, the pounding of the heart and lungs would stop. Furthermore, the organs would be incapable of performing the essential duties for survival. Food and drink provide this energy to people.

People would most likely live healthy lives if they merely consumed the number of calories required each day. Calorie intake that is either too low or too much will eventually cause health issues.

The amount of potential energy in food is determined by the number of calories it contains. Moreover, the substance from which the calories are derived is just as significant as the calories themselves.

The calorific values of three major dietary components are listed below:

  • Carbohydrates have a caloric value of 4 kcal per gram.
  • One gram of protein has a caloric value of 4 kcal.
  • Each gram of fat contains 9 calories.

How Many Calories Should You Consume On A Daily Basis?

This question’s answer is determined by a number of factors, including your age, height, and current weight. A general rule of thumb while trying to lose weight is to consume 500 fewer calories than your body requires. In order to help you maintain your present weight. This will assist you in losing approximately one pound (0.45 kg) of body weight each week.

The following are typical calorie ranges that take these aspects into account:

For women

Women who are physically active and walk more than 3 miles per day, require at least 2,200 calories per day to stay in shape. And you’ll need to burn at least 1,700 calories every week to lose one pound (0.45 kg).

Furthermore, Women in their early twenties have increased calorie requirements. To stay in shape, they need roughly 2,200 calories each day. Women above the age of 50 have a lower caloric requirement. To maintain her weight, the average moderately active woman over 50 needs 1,800 calories per day. And 1,300 calories per day to drop 1 pound (0.45 kg) every week.

Women who are pregnant or lactating have much-increased calorie requirements, so these figures do not apply to them.

For men

To lose one pound (0.45 kg) each week, males who walk more than 3 miles per day may need 2,800–3,000 calories per day, and 2,300–2,500 calories per day. Young men between the ages of 19 and 25 have increased energy requirements. They require 2,800 calories per day on average, and up to 3,000 if they are active, to maintain their weight.

Moderately active young men should consume 2,300–2,500 calories per day to lose one pound (0.45 kg) every week. Males’ energy requirements decrease as they age. However, males between the ages of 46 and 65 who are moderately active require an average of 2,400 calories each day. After 66 years, the average man’s calorie requirements reduce to roughly 2,200 calories per day.

For children

Calorie requirements for children vary substantially based on their age, size, and level of activity.

A moderately active teenager needs 2,000–2,800 calories per day, but a toddler needs 1,200–1,400 calories per day. Active adolescent boys are expected to do much more.

Calorie counting is usually unnecessary for children who are growing and developing properly and who participate in regular physical activity. When given a variety of nutritious meal alternatives, most moderately active children eat the quantity of food their bodies require.

What happens if you eat too few calories?

1. Muscle mass is broken down for energy (catabolism).

2. After 3 days of very low calories, your metabolic rate will begin to plummet (usually) — this is linked to and exacerbated by the loss of muscle mass.

3. Low-calorie diets can lead to sluggishness, nutritional deficits, weariness, and irritation. If you suddenly return to your old eating habits, you’re setting yourself up for a fat gain.


Calories appear to be only associated with weight gain and obesity, although they are essential for good health. They are only harmful to one’s health if they are consumed more than the prescribed dosage.

When calculating calories, you should take into account not only your diet but also your degree of physical activity. Regular, high-intensity exercise can help offset high-calorie consumption.

The daily calorie intake that is suggested is determined by several factors, including:

  • General health
  • Physical exertion requirements
  • Sex
  • Weight
  • Height
  • Body type


How many calories should I eat A day?

The amount of calories a person requires in a day is determined by their level of activity and resting metabolic rate. However, this can be evaluated at a doctor’s or dietitian’s office, according to McDaniel. “It’s common knowledge that males should eat no fewer than 1,500 calories and women should eat no fewer than 1,200 calories to guarantee a balance of major and micronutrients.”
General calorie requirements for people of various ages and levels of activity are provided by the National Institutes of Health (NIH). For a middle-aged moderately active girl, a 2,000-calorie-per-day diet is recommended. However, a moderately active middle-aged man should take between 2,400 and 2,600 calories per day.

How much kcal is in a calorie calculator?

kcals (short for kilocalories) and kJ (short for kilojoules) are commonly used to express calorie content (short for kilojoules). 1,000 calories will be written as 1,000kcals because a kilocalorie is a synonym for a calorie. Kilojoules, a metric unit of energy, are used to measure calories.

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