Determining Macros for Obese Individuals

Filed under Counting Macros
Flexible Dieting IIFYM for the obese

Counting Macros/ Flexible Dieting is a great method for losing weight and has helped thousands achieve both their weight loss and fitness goals.

But, for obese individuals (in this case, those with 50+ pounds to lose) the process and TDEE/macro formulas aren’t always cut and dry.

Here’s why…

The Metabolic Needs of Fat Tissue

The cells in the body that store fat are a living tissue and do require nutrients and a blood supply, but the energy they require to maintain themselves is a fraction of the energy required for active bodily tissues like muscle and nervous tissue.

Macro calculations use widely trusted resting metabolism equations to factor a person’s TDEE (total daily energy expenditure) and macro amounts but one of the key factors in these equations is a person’s body weight.

However, if more than 50 pounds of that weight is from fat tissue, it can skew the results of the equation and cause the person’s TDEE to be estimated too high.

Fat tissue simply does not require the same amount of energy as other tissues and therefore, must be considered carefully when estimating a safe and effective weight loss TDEE.

According to research that looked at the resting energy expenditure of different bodily tissues, adipose tissue (fat) burns just 2 calories per pound per day. So someone with 75 pounds of fat would only require 150 calories a day to maintain that fat tissue. On the other hand, resting muscle burns 6 calories per pound and nervous tissue 109 calories per pound per day.

Here’s a great chart that summarizes different tissues’ and organs’ energy use.

Where Macro Formulas Fall Short

Hopefully, you can now begin to see how the same formula will not work for everyone since standard formulas were designed for those with what is considered an average body composition for a man or a woman.

A person that is 180 pounds with a lean mass of 170 will have a different TDEE than someone who is 180 pounds with a lean mass of just 120 pounds.

The 170 pounds of lean mass person requires more energy because they have more lean muscle mass. The person with 60 pounds of excess fat requires less energy.

Most standard macro calculating formulas do not take this into consideration when determining a person’s REE or TDEE. 180 pounds is factored the same way no matter what the composition of those 180 pounds.

For those with less than 50 pounds to lose, the formula still is effective because the body composition differences would be smaller, but for those with 75, 100, or even 200 pounds to lose, this fat tissue weight should be factored into the equation.

Consider Lean Body Mass

First figuring out your lean body mass when calculating your TDEE and macros can help create a more accurate picture of the energy your body actually requires while at rest, which can make the difference between success and frustration for those with significant weight to lose.

You can get an estimate of this by using this body fat percentage tool.

Now that you know your lean body mass, you can use that as the basis for a macro and TDEE calculation.

Here’s a comparison that visualizes the difference in the macros for an obese individual using both their true body weight and their lean body mass.

Here we have a 30-year-old male who is 5’10” and 270 pounds. He has a lean body mass estimated at 204 pounds. He walks for about an hour daily so this would be classified as light activity and also factored into the equation.

iifym obese calculations

As you can see, there is more than a 300 calorie difference in the two sets of results and this could make a big difference in whether or not counting macros would prove successful or not.

Are we to ignore fat tissue all together?

No, fat tissue does burn calories as shown in the above chart and this isn’t completely being ignored by using lean body mass. In our example, the ideal body weight for the guy shown is about 170 pounds. Therefore, there are still 34 extra pounds calculated in the formula to account for the calories his fat tissue would be burning.

If a person’s lean mass calculated close to their ideal body weight then I suggest adding around 25-50 pounds to help account for their fat tissue metabolism.

It’s a bit complicated and that’s why some personal macro coaching is beneficial for those with a considerable amount of excess fat to lose.

Calorie Level Disappointment

Many people with significant weight to lose who use our calculator get excited when they see how many calories it tells them that they can eat for weight loss.

But when they become a coaching client of mine, they become disappointed when I formulate their macros for them based on the adjustment for their excess fat tissue.

While the calorie levels are lower than what was initially expected, flexible dieting still allows for the eating of much more food than most popular diet plans.

For example, Nutrisystem only allows males to eat about 1500 calories a day regardless of exercise or body weight.

Also with counting macros or Flexible Dieting, the more you exercise, the more you can eat since this method is always striving to maintain a safe calorie deficit of 20%. In the example above, if our guy began to exercise more and enough to jump to the “moderate” category, he could then eat 2348 calories per day.

Macros Should Be Individualized For Obese Individuals

With tracking macros there isn’t a one size fits all calculation and macros should be formulated with an individual’s unique stats and body composition in mind.

While calculators can give the average person a good starting point, for many people, a more individualized approach to calculating macros and TDEE is needed.

If you have more than 50+ pound to lose, you’ll have the best results if you use a more tailored set of macros. I can do this for you as part of the coaching plan we offer or you can use the information in this article to calculate your own macros that are more conducive for reaching your weight loss goals.

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  • McClave SA, Snider HL. Dissecting the energy needs of the body. Curr Opin Clin Nutr Metab Care. (2001) 4(2):143-7 abstract link
  • Leibel, R. L., & Hirsch, J. (1984). Diminished energy requirements in reduced-obese patients. Metabolism, 33(2), 164-170. abstract link
Ted Kallmyer is an ISSA certified Specialist in Fitness Nutrition, author, and macros coach. He has helped hundreds of clients reach their body transformation goals.
Updated April 29, 2018


  • Loz

    Hey! What would be the equation for calories for an obese client once I have their BF% and lean muscle mass?

  • Linda

    Hi. I am 56 yrs old. 5’3” and 170 lbs. I never had trouble losing weight until my 50s. Everything that used to work has failed. I am wondering if counting macros may be the secret ingredient for me. I am just very confused on how to do this correctly.

    • Ted Kallmyer (Certified Macro Coach)

      Hi Linda, I don’t think there’s a “secret ingredient” to weight loss but understanding your energy needs, establishing a safe deficit and being consistent sure goes a long way. Counting macros helps teach you that. Medically, women over 50 have to also be aware of what’s happening hormonally in their bodies. Thyroid function, estrogen levels, and testosterone should all be in check.

  • Nicole

    Hi. I am 22 and 180 pounds. I am 5’3″ and have a lot of body fat, especially on my tummy. I was told that counting my macros would help me lose weight but after reading I am a little confused on how to accurately calculate how many carbs, fats, and proteins I should be eating in a meal. Can you help?

    • Ted Kallmyer (Certified Macro Coach)

      Hi Nicole, I can. You need to adjust your TDEE considering your fat tissue weight. I can do this and consider other factors such as exercise and such with the custom macros option. Personalized Macros Coaching

  • Susan L Schwartz

    I am 38 female weigh 170lbs 5ft 3 inches and want to start keto. What should I do for my macros??

    • Ted Kallmyer (Certified Macro Coach)

      Hi Susan, You can check out my keto calculator here. Keto Diet Macros: How to Calculate Yours It seems like you are borderline so you will be ok without additional calculations.

      • Sally

        I completely freaked out. I didn’t realize that was a keto calculator. I was at 20g of carbs and so much fat.

        • Ted Kallmyer (Certified Macro Coach)

          I could see why! Use my standard macro calculator but not that excess fat tissue >40 pounds will skew your recommendations. Flexible Dieting Macro Calculator

  • kranthi Kakkerla

    I am 37 years old male and my stats are below. I have tried multiple things and workout 5 days a week minimum. Lift decent weights Squat 120kg x 9, Bench 70kg x 9 Deadlift 120 x 15. But i keep fluctuating between 84 to 86kg. I eat pretty clean as well with very few exceptions. Usually around 2300 cal/day.
    So in order to lose Body fat and get to 8% i believe i need to lose 10kg Fat so if i eat 2000cal/day will that be sufficient ?

    Height 5,7
    Weight 87
    BF 19%
    Workout 5 days a week

    • Ted Kallmyer (Certified Macro Coach)

      Hi Kranthi, You would want to eat less on your rest days than you do on your workout days. Setting your deficit at 20% is a good place to start and you’ll lose fat without sacrificing muscle tissue. Head over to our calculator and calculate an exercise set and a sedentary set. Also, it seems like you should add some more lifts to your workout routine. Perhaps cut back on sets and add in a few more variations?

      • kranthi Kakkerla

        Hi Ted,
        I switched to 2 day split recently and added 40 mins cardio (20 am & 20pm). I do change it every week for example Mon Legs, Tue Chest & Triceps Wednesday Off/ Cardio, Thursday Back & Biceps, Friday Shoulders+Calf+Abs Satu off/Cardio Sunday Legs and so on…
        Each week i switch between focusing on Strength and hypertrophy. I will check my weight next Tuesday to see if this new routine and deficit in enough for me to see the changes if not ill do what you have suggested above and to carb cycling on day offs untill then i will continue with 2000/cal a day

  • NetiaSosa

    My husband’s ATL levels are WAY high, how would basic macro counting need to be adjusted for him considering his current health.

    • Ted Kallmyer (Certified Macro Coach)

      Hi Netia, Sorry but I can’t give advice regarding medical conditions. This sounds like something you should be asking your doctor or a registered dietician.

  • Wilson

    Hi I am a 29 year old Male with 247 pounds and 5’11” height. I exercise 6 days a week at the gym doing strength exercises. Can you please tell me if the calculation will work for me or so I need to do a base calculation? Need your help since I feel stuck.

    Thanks in advance

    • Ted Kallmyer (Certified Macro Coach)

      Hey Wilson, Thanks for stopping by. It sounds like what you’re asking for would fall under our coaching services. There are a lot of factors that go into determining your optimal base macros. As your coach, I’ll be able to account for all of them and devise a plan that will produce success for you.

    • Lamar Dair

      I’m 5’10 242 and I used the base calendar. It’s working for me so far. I’m also intermittent fasting though.

  • Jane

    Hi, I’m on the obese level. I weigh 74kg, have a pear-shaped body. My waist is around 36in, hips 44in. I’ve been doing exercises for my lower body for 2 weeks now and my weight is still the same. Unlessi eat oats in the evening or just a glass of milk is when I lose at least a kilo for 3 days. Unfortunately, I’m asian so our meals include rice. I eat 3x a day. Can you please help me? I am also a student so I’m on low budget. Thank you!

    • Ted Kallmyer (Certified Macro Coach)

      Hi Jane, At 74kg I don’t think you would need a special calculation. Head over to our macro calculator and plug in your stats. It’ll tell you how much to eat to lose weight in a safe manner.

  • Tracey Morin

    What formula is used to determine how may extra pounds should be added to a persons ideal body weight to account for the calories their fat tissue would be burning.