There are many free weight loss calculators available on the internet. These calculators usually ask for details such as the person's height, weight, age, target weight and the level of physical activity. These factors are used to determine the amount of calories you can take in to initiate weight loss or to maintain your current weight. The calculators usually use the Body Mass Index to determine if a person's weight is ideal to his height. The calculators also compute the basal energy or the amount of calories needed by the body to maintain normal metabolic rates to sustain the body's standard physical activities that are needed to survive such as breathing, etc.
To maintain current weight, a person must consume enough calories to sustain the person's physical activities. To lose weight a person must consume lesser calories. Lesser calorie intake means all the calories are utilized by the body and not stored as fat.
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The number of calories from your daily consumption that you were unable to burn during the day is called the Daily Calorie Deficit. This means that if you consume 2800 calories and burn only 2000 calories during the day, you have a daily calorie deficit of 800. This excess of 800 calories is what's stored as fat in the body.
The fat in the body can only be melted if you burn more calories than you actually consumed during the day. When you consume less calories than you burn, the body will get its additional energy requirements from the stored fat in the body. This means that you will end up losing weight.
The weight loss calculator will help you compute the number of calories you can take to lose weight. If you are extremely overweight, you will realize that to achieve your ideal weight you will need to consume very little calories.
This should tell you that in order not to suffer from starvation and still lose weight, you will need to increase your physical activity to burn off the excess calories.Weight Loss Calculator