Body Recomp Calculator

Welcome to our body recomp calculator. Here is the quick answer first: body recomposition means building muscle and losing fat at the same time, and the recipe is simple. You eat at, or very near, your maintenance calories, you eat plenty of protein, and you do regular strength training. This body recomp calculator does the hard maths for you. Enter your sex, age, weight, height and activity level, choose your approach, and it gives you your exact daily calories and macros for protein, carbs and fat, so you can start today with a clear plan.

Using the calculator is easy, and the results update as soon as you change any answer. Your sex, age, weight and height are used to estimate how many calories you burn at rest. Your activity level then turns that into your maintenance calories, which is the amount you need each day to stay at the same weight. Last, your approach adjusts that number. Classic recomp keeps you at maintenance, a mild cut takes off ten percent, and lean gain adds ten percent, so you can pick the path that fits your goal and your patience.

Please read this honest note before you start. Recomp is real, but it is slow. You will not build muscle as fast as someone who is only bulking, and you will not lose fat as fast as someone who is only dieting. What you get instead is steady progress in both directions at once, without big swings in your weight. For the right person, that slow and steady progress is exactly what makes the plan easy to keep for months.

What Is Body Recomposition?

Body recomposition, often shortened to recomp, is the process of changing what your body is made of rather than simply changing how much you weigh. Most weight loss plans focus only on losing fat, and most muscle plans focus only on gaining size. Recomp tries to do both jobs together. Your weight on the scale may stay almost the same for weeks, while your waist gets smaller, your arms and shoulders look firmer, and your clothes fit in a better way.

It works because your body needs energy and building blocks to make new muscle. Strength training tells your body that muscle is needed. Protein from your food gives it the material to build with. Some of the energy can come from the food you eat, and some can come from your stored body fat. In plain English, your body can use part of its own fat stores to help pay the energy cost, while dietary protein supports new muscle growth at the same time.

Recomp works best for three groups of people. Beginners are the first group, because their muscles respond quickly to new training, even without a big calorie surplus. The second group is people returning to training after a break, because muscle they built before often comes back faster than it took to build the first time. The third group is people carrying extra body fat, because they have more stored energy their body can use while they train and eat well.

Experienced and lean lifters should expect much slower progress. If you have trained hard for years and you are already lean, your body has much less spare fat to use and your muscles are much harder to grow. For those people, separate phases often work better. A lean bulk is used to build muscle for a while, and then a cut is used to lose fat, instead of trying to do both at once.

How Many Calories for Body Recomp?

For classic recomp, eat at your maintenance calories. That is the amount that keeps your weight steady. You do not need to be perfect every single day. Staying within about ten percent either side of maintenance still works for most people, because daily life, hunger and training days are never exactly the same. If you want to check your maintenance number on its own, use our Maintenance Calories Calculator and then come back to this body recomp calculator to turn that number into a full recomp plan.

A big calorie deficit is the most common mistake. When you eat far below maintenance, your body has little energy left to build new muscle, your training feels harder, and your strength can stall or fall. Fat loss may be faster at first, but muscle gain mostly stops. A small deficit of about ten percent is very different. It is gentle enough that many beginners can still gain strength and muscle while they slowly lose fat.

A small surplus works in the opposite way. Eating about ten percent above maintenance can speed up muscle gain a little, because energy is easy for your body to find. The trade off is that some extra fat usually comes with it. That choice is called lean gain in this calculator. It suits people who are fairly lean already and who care more about building muscle than about losing fat right now.

How Much Protein for Recomp?

Protein is the most important macro for recomp, because you cannot build new muscle without it. This calculator uses a practical target of about 2.2 grams of protein per kilogram of body weight each day. That is about 1 gram per pound of body weight, which is easy to remember. For an 80 kilogram person, the target is 176 grams a day. It sounds like a lot at first, but it becomes normal once you build each meal around a good protein source.

After protein is set, fat is set at 25 percent of your daily calories. Fat matters for your hormones, your joints and for absorbing some vitamins, so it should not be pushed too low. The rest of your calories then come from carbs. Carbs are not the enemy here. They fuel your training, help you work hard in the gym, and support recovery, which is exactly what you need when your goal is to get stronger and change your shape.

A simple way to hit your protein target is to spread it across the day. Aim for a palm sized portion of protein at each meal, such as eggs, Greek yogurt, chicken, fish, lean meat, tofu or lentils, and add a protein rich snack if you need one. You do not need perfect timing or special products. Hitting your daily total, most days of the week, is what matters most for your results over the coming months.

Worked Example

Let us walk through the calculator with a real example. Our person is a 30 year old man who weighs 80 kilograms, is 180 centimetres tall, and is moderately active, which means he trains about three to five days a week. He chooses classic recomp, so he will eat at maintenance. These are the same numbers the calculator shows by default, so you can check every step yourself at the top of this page.

First, his maintenance calories come out at 2,759 kcal a day, and because classic recomp means eating at maintenance, his target stays at 2,759 kcal. His protein target is 80 times 2.2, which is 176 grams a day. His fat target is 25 percent of his calories, which works out at about 77 grams a day. The rest of his calories go to carbs, which gives him about 341 grams a day to fuel his training and daily life.

Notice what this example shows. He is not eating a low calorie diet, and he is not eating a huge bulking diet either. He is eating a normal amount of food, but it is planned. The protein is high, every meal has a job to do, and his training gives his body a reason to build muscle instead of simply staying the same. That steady, planned approach is the heart of a good recomp.

Training Matters More Than the Numbers

Here is the honest truth of this whole page. Your training matters more than the exact numbers. Calories and protein create the right conditions, but progressive resistance training is what actually tells your body to build and keep muscle. Train each major muscle group, use good form, and slowly add weight or extra reps over time. Three to four sessions a week is enough for most people, as long as the effort is real and the plan is followed most weeks.

Sleep and patience matter almost as much as training. Muscles grow and repair while you rest, so aim for good sleep most nights and take rest days without guilt. Then give the plan time. Recomp is measured in months, not in days or weeks. Many people see clear changes in the mirror after three months, and much bigger changes after six months, even though the change from one week to the next feels tiny.

Do not judge your recomp by the scale alone. If you lose fat and gain muscle at a similar speed, your weight may barely move at all, and that can feel like failure when it is really success. Track your waist measurement, take progress photos in the same light each month, and write down your training weights. If your waist is smaller and your lifts are going up, your recomp is working, whatever the scale says.

Frequently Asked Questions

Ready to start? Use the body recomp calculator at the top of this page to get your calories and macros, pick your approach, and follow the plan for at least three months before you judge it. If you want to try a different macro split, or you already know your calorie target and just want the grams, use our Macronutrient Calculator for other splits and options that may fit your taste and routine better.

If you are still unsure about your daily calorie target in general, read our guide on how many calories you should eat daily. It explains daily calories in simple words for different goals, including losing, maintaining and gaining. Whatever goal you choose, remember that the best plan is the one you can follow calmly for months. Good luck, train hard, eat enough protein, and let your body change at its own steady pace.