TDEE & Macro Calculator
Our TDEE and macro calculator gives you a personalized daily calorie target and macronutrient breakdown based on your body stats and activity level. Total Daily Energy Expenditure (TDEE) is the total number of calories you burn in a day, and understanding this number is the foundation of any effective nutrition plan. Without knowing your TDEE, guessing at calorie intake is like driving without a speedometer -- you might be going way too fast or too slow for your goals. This calculator uses scientifically validated equations to estimate your basal metabolic rate (BMR) first, then multiplies it by an activity factor to get your TDEE. From there, it distributes your calories across protein, carbohydrates, and fats based on widely accepted nutritional guidelines. Whether you want to lose fat, build muscle, or maintain your current weight, having an accurate calorie and macro target removes the guesswork and helps you track progress with real numbers. You enter your age, sex, weight, height, and activity level, and within seconds you get a complete nutrition blueprint tailored specifically to your body and goals.
What Is
A TDEE (Total Daily Energy Expenditure) and macronutrient calculator is a comprehensive nutrition tool that estimates how many calories you burn per day and how those calories should be divided among the three macronutrients: protein, carbohydrates, and fat. Your TDEE is composed of several components working together. The largest piece is your Basal Metabolic Rate (BMR), which accounts for roughly 60 to 75 percent of your total daily energy expenditure. BMR represents the calories your body burns just to maintain basic life functions -- breathing, circulating blood, regulating temperature, and keeping your organs running while at complete rest. The most accurate equations for estimating BMR are the Mifflin-St Jeor formula, which calculates BMR differently for men and women. For men: BMR = 10 x weight(kg) + 6.25 x height(cm) - 5 x age(y) + 5. For women: BMR = 10 x weight(kg) + 6.25 x height(cm) - 5 x age(y) - 161. On top of BMR, you burn additional calories through daily activities. Non-Exercise Activity Thermogenesis (NEAT) covers movements like walking, fidgeting, and standing, accounting for 15 to 35 percent of TDEE. The Thermic Effect of Food (TEF) uses about 10 percent of your caloric intake just to digest and process what you eat. Finally, deliberate exercise adds another 5 to 25 percent depending on how active you are. The calculator combines all these factors by multiplying your BMR by an activity multiplier: sedentary (x1.2), lightly active (x1.375), moderately active (x1.55), very active (x1.725), or extra active (x1.9). Once your TDEE is calculated, the macronutrient breakdown distributes those calories across protein (recommended at 0.7 to 1.0 grams per pound of body weight for active individuals), fat (20 to 35 percent of total calories), and carbohydrates (the remaining calories). Protein and carbs provide 4 calories per gram each, while fat provides 9 calories per gram. This macro distribution supports muscle maintenance, hormone production, brain fuel, and sustained energy throughout the day.
How to Use
- Select your sex and enter your current age in years, body weight (in kilograms or pounds), and height (in centimeters or feet and inches). Accurate measurements produce the most reliable results.
- Choose your typical daily activity level from the five options provided, ranging from sedentary (desk job, little exercise) to extra active (physical job plus daily intense training).
- Enter your primary goal: lose weight (calorie deficit), maintain current weight (eat at TDEE), or gain muscle (calorie surplus). The calculator will adjust your daily targets accordingly.
- Review your calculated TDEE and the recommended macronutrient breakdown showing grams of protein, carbohydrates, and fat along with their percentage of total daily calories.
- Use these targets as your daily nutrition benchmarks. Track your food intake using any nutrition app and aim to hit within 50 calories of your target for consistent results over time.
- Re-calculate every four to six weeks or whenever your weight changes by more than 2 to 3 kilograms, as your TDEE decreases with weight loss and increases with muscle gain.
Examples
Input: Male: 75kg, 175cm, 30yo
Process: BMR=1699 kcal/day
Result: BMR=1699 kcal/day (resting metabolism)
Input: Female: 60kg, 162cm, 25yo
Process: BMR=1327 kcal/day
Result: BMR=1327 kcal/day (resting metabolism)
Input: Male: 85kg, 180cm, 45yo
Process: BMR=1755 kcal/day
Result: BMR=1755 kcal/day (resting metabolism)
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Frequently Asked Questions
What is the difference between TDEE and BMR?
Your BMR (Basal Metabolic Rate) is the minimum number of calories your body needs to sustain basic life functions while at complete rest -- think of it as your body's idle speed. BMR accounts for roughly 60 to 75 percent of your total daily energy expenditure. Your TDEE (Total Daily Energy Expenditure) includes your BMR plus all additional calories burned through daily movement, exercise, digestion, and even fidgeting. Two people with identical BMRs can have very different TDEEs if one has a sedentary desk job and the other is a construction worker. For weight loss purposes, you work with your TDEE -- eating 300 to 500 calories below your TDEE typically produces safe, sustainable fat loss of about 0.5 to 1 pound per week.
How accurate is the TDEE estimate?
The Mifflin-St Jeor equation used here predicts BMR within about 10 percent for most people, but individual variation exists. Factors like hormonal conditions, genetics, body composition, and certain medications can cause your actual metabolic rate to differ from the estimate. The activity multiplier is also a broad categorization -- two people who both select moderately active may actually have different true energy expenditures. Treat your calculated TDEE as a starting point, not a precise prescription. Track your weight over two to three weeks and adjust your intake up or down by 100 to 200 calories based on whether your weight is trending in the desired direction. This real-world feedback loop is more accurate than any equation alone.
Should I eat back calories burned during exercise?
This depends on how your calculator accounts for activity. If you already selected an activity level that includes your exercise routine, then your TDEE already factors in those workout calories and you should not eat them back. If you chose a sedentary or lightly active baseline on purpose and exercise on top of that, you can eat back a portion of exercise calories to avoid an overly large deficit that causes fatigue and muscle loss. A good rule of thumb is to eat back 50 to 75 percent of estimated exercise calories, as most fitness trackers and machines overestimate calorie burn by 15 to 30 percent. Focus more on your weekly average calorie intake rather than obsessing over daily precision.
What is the best macro ratio for fat loss?
There is no single best macro ratio that works for everyone, but research provides strong guidelines. Protein should be your priority -- aim for 0.7 to 1.0 grams per pound of body weight daily to preserve muscle mass during a calorie deficit and promote satiety. Fat should stay above 0.3 grams per pound of body weight to maintain hormone production and nutrient absorption. Fill the remaining calories with carbohydrates to fuel your workouts and daily activities. A common starting split is 30 percent protein, 35 percent carbohydrates, and 35 percent fat, then adjust based on your energy levels and results. Endurance athletes generally need more carbohydrates, while strength-focused individuals may benefit from higher protein and moderate fat.
How often should I recalculate my TDEE?
You should recalculate your TDEE every four to six weeks during an active weight loss or muscle gain phase, or whenever your weight changes by more than 2 to 3 kilograms (about 5 to 7 pounds). As you lose weight, your TDEE decreases because a smaller body requires fewer calories to maintain itself -- this is why weight loss plateaus happen and why periodic recalculation is essential. Conversely, if you are gaining muscle mass, your TDEE will gradually increase. If you are in weight maintenance mode, recalculate every two to three months or when your activity level changes significantly. Using outdated calorie targets is one of the most common reasons people stop seeing progress in their nutrition goals.