This Calorie Calculator is based on the Mifflin-St Jeor Equation which calculates basal metabolic rate (BMR), and its results are based on an estimated average. The basal metabolic rate is the amount of energy expended per day at rest. There exist other equations including the Harris-Benedict Equation which was used until 1990 before the introduction of the Mifflin-St Jeor Equation and the Katch-McArdle Formula which calculates resting daily energy expenditure (RDEE) by taking lean body mass into account. The Mifflin-St Jeor Equation is considered the most accurate equation for calculating BMR, with the exception that the Katch-McArdle Formula can be more accurate for people who are leaner that know their body fat percentage. The Mifflin-St Jeor Equation is as follows:
It is important to remember that proper diet and exercise is largely accepted as the best way to lose weight. It is inadvisable to lower calorie intake by more than 1,000 calories per day, as losing more than 2 pounds per week can be unhealthy, and can result in the opposite effect in the near future by reducing metabolism. Losing more than 2 pounds a week will likely involve muscle loss, which in turn lowers BMR since more muscle mass results in higher BMR. Excessive weight loss can also be due to dehydration, which is unhealthy. Furthermore, particularly when exercising in conjunction with dieting, maintaining a good diet is important, since the body needs to be able to support its metabolic processes and replenish itself. Depriving the body of nutrients it requires as part of heavily unhealthy diets can have serious detrimental effects, and weight lost in this manner has been shown in some studies to be unsustainable, since the weight is often regained in the form of fat (putting the participant in a worse state than when beginning the diet). As such, in addition to monitoring calorie intake, it is important to maintain levels of fiber intake as well other nutritional necessities to balance the needs of the body.

It can be difficult to lose weight and maintain a healthy lifestyle if you don't have adequate social support. Some weight loss programs offer in-person support group meetings, others offer one-on-one counseling via telephone or text messaging and still others use online message boards or forums to connect you with others using the plan.  Corresponding with like-minded people can make your fat-loss journey easier and more productive, but what level of accountability and interaction do you want or need? 

When you complete the calorie calculator process, you'll get a daily calorie goal. This is the number of calories you should eat each day to reach your desired weight in the time frame that you set. If you are trying to gain weight, your daily calorie goal will include a calorie surplus. But if weight loss is your goal, a calorie deficit is factored into your final number. 


Suzanne Hiscock is a PN1 Nutrition Coach, ACE-certified Health Coach, as well as an ACE-certified Fitness Nutrition Specialist. For over 16 years, she has been helping people lose weight and get fit through her website, FitWatch.com. Whether it's with one-on-one nutrition coaching, nutrition programs or courses, and tools or calculators, she can help you to eat better, move more and believe in yourself.

The reason we’re suggesting 45 minutes instead of the typical 30 as one of the ways to lose weight is that a Duke University study found that while 30 minutes of daily walking is enough to prevent weight gain in most relatively sedentary people, exercise beyond 30 minutes results in weight and fat loss. Burning an additional 300 calories a day with three miles of brisk walking (45 minutes should do it) could help you lose 30 pounds in a year without even changing how much you’re eating. Here are 20 hidden reasons your diet isn’t working.

Having actual caloric measurements can also assist in weight loss, since tangible calorie goals can be set, rather than simply trying to eat less. Also, although this is not necessarily directly related to calorie counting, studies have shown that portion control by simply eating from a smaller plate can help reduce calorie intake, since people tend to fill their plates and eat everything on their plates. Many people do not realize that they are overeating, since they have become accustomed to restaurant-sized portions being the norm, when said portions can be up to three or more times larger than necessary for a typical meal.

Intentional weight loss is the loss of total body mass as a result of efforts to improve fitness and health, or to change appearance through slimming. Weight loss in individuals who are overweight or obese can reduce health risks,[1] increase fitness,[2] and may delay the onset of diabetes.[1] It could reduce pain and increase movement in people with osteoarthritis of the knee.[2] Weight loss can lead to a reduction in hypertension (high blood pressure), however whether this reduces hypertension-related harm is unclear.[1][not in citation given]
I got this (well, actually the 2011 version) for my boss who eats at Hooters like everyday and wants to lose his potbelly but refuses to give up junky food. A lot of it's the lesser of two evils, so if you're super jonzing for some fries and you want to TRY to be good, you'll learn that KFC's wedges are actually pretty sensible. It also has a sweet grocery guide where it's not the lesser of two evils, but the better choice, period, arming you for smarter shopping. I started reading it and was so ...more
If you are looking to kick start a new weight loss routine or conquer a diet plateau, try Dr. Oz's new two-week rapid weight-loss plan. By loading up on healthy food, like low-glycemic vegetables and small portions of protein, you can help curb your cravings and give your body a healthy start to the year. Plus, all of the meals can be automated and prepped, so you can drop pounds without spending a ton of time in the kitchen doing prep work. Read on to find out all the details!
If you’ve been eating fast food for years, get real about your approach: You’re probably not going to stick to an organic, gluten-free, paleo overhaul for very long. “You want to change as little as possible to create calorie deficit,” says Dr. Seltzer, who insists the best way to support sustainable weight loss is to incorporate small changes into existing habits. So instead of giving up your daily BLT bagels in favor of an egg-white wrap, try ordering your sandwich on a lighter English muffin. Or say you eat a snack bar every afternoon: Swap your 300-calorie bar for a 150-calorie alternative. “Your brain will feel the same way about it, so you won’t feel deprived,” he says.
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