A weight loss calculator can be a great motivational tool if you look at it with the right attitude. Whether youve got 10 pounds to lose or 200, punching in the numbers and coming up with goals and time lines can help focus you to the task ahead. In fact, a calculator is just one of the tools you can use to help keep you losing weight and getting healthier without getting burned out or quitting because you dont know what to do next.

The Internet contains every kind of weight loss calculator you can think of. You can calculate your BMI, or body mass index. By entering your height, weight and approximate level of activity, youll get a BMI number. This number determines whether youre about normal, overweight or obese. The lower the number, the better, though it does point out the numbers than mean a person is underweight, too.

The BMI calculator is one of the most common youll find, and one of the easiest to use. While youre losing weight, it can also be fun to punch new numbers into the weight loss calculator from time to time to watch the BMI number go down. Especially satisfying is the day when your number moves from the obese range to the overweight range, or from overweight to normal!

Other types of planning and motivational tools youll find on line are calculators for things like figuring your daily caloric needs. These can be used in a variety of great ways to help you lose weight. First, figuring out how many calories you need a day just to maintain your weight is one of the best things you can do when you plan to drop some pounds. Everyone, whether they want to lose weigh or not, should know about how many calories they should eat in a day, just for general health.

One youve used the weight loss calculator figure your daily calorie needs, if youll subtract 500 from that number and stick to the plan, youll lose on average 1 pound a week. Subtract more calories to lose more, without going below 1500 or 1600 calories. Most people need at least that much for proper nutrition and health. If youre extremely short and small boned you could probably go lower; but not by much. Remember, under eating to lose weight pretty much guarantees youll gain it back as soon as you eat normally again.

Another type of weight loss calculator that can be incredibly motivating can be found online, too. You enter your weight, and your goal weight, and it calculates about how many calories you should eat per day to reach that weight by your specified date. Most will even warn you if your date is too ambitious, and that it would be hard if not impossible to achieve the goal by that date. Some let you enter your goal, and they give you a date. This lets you use a weight loss calculator to plan and monitor your success.

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BMI calculations might seem like some esoteric and complicated process that you have no hope of figuring out. That’s not true. BMI isn’t magic or some scientific secret withheld by those in the know. If you’ve ever used a BMI calculator online, then you know that you put in your height and weight, and it cranks out special number. There’s always a chart handy, or the website interprets it for you, and tells you whether you’re underweight, normal weight, overweight or obese, all based on this single number. The website did the calculations for you, but you might be wondering just how it arrived at that number. BMI calculations are fairly simple once you understand the basic formula. But first, let’s look at what BMI is and what BMI calculations are used for in the first place.

BMI is the measure of body mass. By comparing your weight and height, specifically dividing your weight by your height, squared, the BMI calculations give us a single number. Depending on where that number falls on a special scale, it tells you if you’re underweight for your height, in the normal range, overweight, or obese.

BMI doesn’t measure body fat, however, so often the number is wrong when it comes to athletes or very muscular people. Muscle weighs more than fat, so for them, BMI isn’t an accurate measure at all. For most people, though, it’s a very good estimate of weight in relation to height. So what BMI calculations allow us to arrive at that magic BMI number?

BMI calculations may seem complicated, but they’re really not. At its most basic, the formula is kg/m2. Or your weight in kilograms divided by your height in meters, squared (your height in meters times itself). A person who’s five-and-a-half-feet tall stands about 1.7 meters. Square that number (1.7 times 1.7) and you come up with 2.89. A person who weighs 150 pounds weights about 68 kilograms. So the BMI calculations to determine this person’s BMI would be 68 divided by 2.89. The result of that is about 23.5.

A BMI of 18.5 or below indicates that an individual is underweight. The normal weight range is from 18.5 to 24.9. Overweight people will calculate a BMI of 25 to 29.9. A BMI of 30 or greater indicates obesity. So a person with a BMI of 23.5 is within his or her normal weight range, according to the BMI calculations.

If you don’t want to convert feet and pounds to meters and kilograms, then you can use one of the other BMI calculations to figure your number. This person’s new formula would be weight in pounds, 150, times 4.88, or 732, divided by height in feet squared (5.5 times 5.5) which is 30.25. Then divide weight by height squared (732 divided by 30.25) and the result is 24.1, very similar to the metric formula’s result. BMI calculations can also be done by taking weight in pounds times 703, and dividing by height in inches, squared.

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