How Many Calories To Eat Daily To Lose Weight? (GET THIS RIGHT!)
To lose fat, you know you need to eat in a calorie deficit. But just how many calories do you need to eat daily to lose weight? Find out in this article.
The fact that you’ve decided to click into this article tells me that you know the importance of calories when it comes to dieting and losing fat, regardless of how “clean” your diet may be. And you likely also understand that for fat loss to occur, you need to be eating the right number of calories. Doing so forces your body to start burning the stored fat you have for energy. Now, this sounds simple in theory. But in practice? People often screw this up by failing to account for just how many calories they need to eat to lose weight.
And there are 2 major ways they screw this up; by:
- Either eating too many calories to see any noticeable change, OR
- Eating too few calories and end up burning their hard-earned muscle off for energy instead of fat
In today’s article, I’ll clear up the confusion for you. I'll show you how to pinpoint exactly how many calories your specific body needs a day to lose weight. All while maximizing your fat loss and minimizing your muscle loss and any other negative effects.
Of course, by now, you should know that you need to take care of both nutrition and training to see the best results. So, before we begin:
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Step 1: Estimate
The first step is to get a general estimate of the number of calories you should eat per day to start experiencing fat loss, which we can then refine later on. To get this estimate, there’s an overwhelming number of different calculators and equations out there for us to choose from. But keep in mind that even with the most “accurate” of equations out there, like the Katch-McArdle method, for instance, they are all estimates. They are not 100% accurate methods for pinpointing exactly how many calories you need to lose weight. Instead, they all require some fine-tuning based on how you progress. And this is what we'll do in step 2.
So, to avoid overcomplicating things, what I’d recommend is to instead use a very simple calculation. For most people, this will be sufficient to put them in a calorie deficit. And is a good starting point for us to then refine. So, what's this calculation? Well, all you do is take your body weight in lbs and multiply that by anywhere from 10-13. If you’re:
- Younger, leaner, and/or more active - Go with the higher end of this range
- Older, less lean, and/or less active - Go with the lower end of this range
This will then give you a good estimate of how many calories you should start eating per day to lose weight.
Step 2: Set Weight Loss Goal
The next step is to determine what an appropriate rate of weight loss would be based on your specific body. This is important for us to get right. Eating too few calories and losing weight too quickly causes 2 issues:
- This is unsustainable for most of us in the long run AND
- Puts us at a greater risk for muscle loss
And of course, we want to avoid losing muscle not only because it will take away from our physiques once we do lose a bunch of weight (we want to end up lean and muscular, not just skinny!), but also because of what happens after we diet.
By the way: a huge thanks to Shane Duquette over at Bony To Beastly for the illustrations above!
Now, recent 2020 research found that muscle loss when dieting is associated with an increased appetite and increased weight regain after the diet is over. In turn, leading subjects to end up in a worse position than they were before they started their diets.
Meaning that for the best chances of both short AND long-term success, maintaining your muscle mass as you diet down needs to be your priority. We can do this by using an appropriate rate of weight loss. And a good general guideline to stick to is one recommended by the work of Dr. Helms and colleagues: a rate of weight loss of no more than 0.5-1% of bodyweight loss per week.
How To Calculate The Weight Loss Rate That'll Minimize Your Muscle Loss
However, taking this guideline one step further... We know based on past research that the more body fat you have to lose, the faster you can lose fat without risking muscle loss. This is why we see a range with Dr. Helms’ recommendation.
So, you can refine and personalize this guideline a little. How? Well, by using a simple calculation developed by Greg Nuckols. Which is to take your current estimated body fat percentage, and divide that by 20. The number you get will be a more accurate % rate of weight loss that you’ll want to aim for per week. And will enable you to maximize fat loss with minimal or no muscle loss.
So, for example, let's say you're currently at 20% body fat. This means you can safely lose around 1% of your body weight per week. For a 190lb individual, this would equate to a rate of weight loss of roughly 2 lbs (1.9lbs) per week.
But in another case, for a 180lb individual at 15% body fat, using the bodyfat%/20 calculation they could safely lose around 0.75% of your body weight per week. Which is a slower rate of weight loss of around 1.5 lbs (1.43lbs) per week.
So, take a look at this body fat chart and estimate your current body fat. Then, use this simple calculation to determine what the appropriate rate of weight loss would be for you.
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Step 3: Fine Tune
Once you have this number down, it’s time to implement it. In step 3, you also want to fine-tune it. This is where you want to start adhering to and monitoring your daily calorie intake as well as tracking your morning bodyweight.
We’re going to use this data to fine-tune your calorie intake. Doing so means how many calories you need to eat is no longer a rough estimation that'll allow you to lose weight. But, instead, much more accurate and fine-tuned to you specifically. To do so, after about 4 weeks of tracking, analyze the data. We can often dismiss Week 1 since most people will lose quite a bit of water weight during this initial period of dieting.
But in the following weeks, we’ll want to look more closely at the numbers. More specifically, how has your weight changed relative to your calorie intake?
What Does This Look Like In Real Life?
For instance, let’s say Steve (15% body fat, 160lbs) has a goal rate of weight loss of about 1 lb per week. And is eating at 2,000 calories a day to try to achieve that. But after implementing this, from weeks 2 to 4, he found that his actual weight loss was slower than his target. He only lost on average about 0.5lbs per week. This is good, of course. But it does indicate that his estimated calorie intake was a little too high. To adjust, and if he felt he could do so, he would simply drop his calories by another 10% or so (~100-200 calories) to hit his target rate of weight loss more accurately.
On the other hand, if Steve was losing weight too quickly, so for example 2+lbs per week, then he’d do the opposite. And increase his calories slightly (+200 calories) to slow this down. This will help him minimize the risk of muscle loss.
And that’s basically all there is to it. You put your original estimate into practice and then fine-tune this number based on how your weight progress throughout the weeks. But also take into consideration how sustainable the calorie deficit you’re adhering to is. Science aside... If your recommended rate of weight loss is 2lbs per week, yet you just personally find this pretty difficult and too aggressive of a deficit, then slow it down. It’s not a race. Stick with a rate of weight loss that’s sustainable for you. That’s ultimately what’s most important for long term success.
Avoid Making This Mistake When Dieting!
Now, with that being said, there’s one all too common mistake that people make with these 3 steps. And this is something you’ll want to avoid. This is none other than attempting to eat back the calories you burn from your workouts or from exercise in general. Doing so is problematic for a couple of reasons.
The Number Of Calories You Burn Is Almost Always Overestimated
The first reason is that fitness trackers, cardio machines, and even us as humans, are terrible at estimating the calories we've burned through exercise - which is terrible news for weight loss. In fact, these figures tend to be overestimated by at least 20%!
In a typical weights workout, for example, you actually don’t burn very many calories at all. Illustrating this is a 2019 paper covering the calorie-burn during a full-body resistance training workout. The average calorie-burn is as follows:
- Male subjects - About 160 calories during the workout
- Female subjects - About half that at about 80 calories
Plus, an additional yet insignificant 8 calories burned from the “afterburn” effect (post-exercise energy consumption).
This isn’t much at all. And becomes problematic because after a grueling leg day, for example, oftentimes we’ll have a “cheat meal” or just eat everything in sight. We think that we’ll easily offset it from the calories burned during the big workout. But this just isn’t true. Cardio is admittedly a little better at burning calories. But still, people overestimate the calories they burn here just as bad.
The Calculation Already Accounts For Your Activity Levels
And secondly, the 3 step method I previously went through already takes into account and averages your activity levels! Therefore, the calories you burn from physical activity and throughout the day are already accounted for. And if you do end up losing weight too quickly because of your additional exercise? Then you would just adjust this by eating more as we discussed earlier.
So just keep it simple. The only times when this would potentially apply is if you’re an athlete and have a big sports event, competition, or two-a-day training session coming up. These are indeed events where you would burn considerably more calories than you normally would. In this case, it would be advised and recommended to bump up your intake for this day mainly with carbs to fuel your performance.
'How Many Calories Should I Eat To Lose Weight?' Action Plan
So, to wrap everything up, here’s a step by step example of how you could start applying this right away.
- First, determine what your estimated calorie intake should be to lose fat based on the simple equation outlined in step 1.
- Then, determine what your optimal rate of weight loss should be based on the simple equation outlined in step 2.
- Finally, implement this while monitoring how your weight progresses throughout the weeks. And if needed, adjust your calorie intake so that your actual rate of weight loss is closer to your target.
And that’s pretty much all there is to it! This does however assume that you’re tracking accurately in the first place and being consistent with your activity levels. So don’t overlook these other variables as well as they are just as important.
And for a step-by-step program that shows you how to easily set up, track, and monitor each of these important variables while equipping you with a science-based nutrition and training program designed to transform your body as efficiently as possible, then:
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