How do I lose weight using my TDEE?

To lose weight, eat less than your TDEE. A deficit of 300–500 calories per day leads to steady fat loss of 0.5–1 lb per week. Track your intake for 2–3 weeks and adjust based on results.

Is TDEE the same as BMR?

No. BMR is the number of calories your body burns at complete rest. TDEE includes BMR plus all additional calories burned through daily activity, exercise, and digesting food.

How accurate is a TDEE calculator?

TDEE calculators are estimates based on population averages. Most people find them accurate within 100–200 calories. Use the result as a starting point and adjust based on real-world results over 2–3 weeks.

Why am I not losing weight if I'm eating at a deficit?

The most common reasons are underestimating calorie intake, overestimating activity level, or water retention masking fat loss. Track food accurately for 2 weeks before adjusting your deficit.

Should I eat back calories burned during exercise?

It depends on how you calculated your TDEE. If you used an activity multiplier that includes your workouts, do not eat them back. If you used a sedentary multiplier and add exercise separately, eating back 50–75% of burned calories is reasonable.

How often should I recalculate my TDEE?

Recalculate every 4–6 weeks or whenever your weight changes by more than 5 lbs, your activity level changes significantly, or your results plateau for more than 3 weeks.

How much protein do I need per day?

Most research supports 0.7–1g of protein per pound of bodyweight per day for active individuals. For fat loss, staying toward the higher end helps preserve muscle. For muscle gain, 0.8–1g per pound is ideal.

Does protein timing matter?

Total daily protein intake matters far more than timing. That said, spreading protein across 3–4 meals and consuming 20–40g within a few hours of training can help maximize muscle protein synthesis.

Can I get enough protein without eating meat?

Yes. Plant-based sources like tofu, tempeh, edamame, lentils, chickpeas, and seitan are high in protein. Combining complementary protein sources throughout the day ensures you get all essential amino acids.

Is too much protein bad for you?

For healthy individuals, high protein intakes up to 1.5g per pound of bodyweight are generally safe. The concern about kidney damage from protein applies only to people with pre-existing kidney conditions.

What protein sources are best for muscle gain?

Animal sources like chicken, beef, eggs, fish, and dairy are complete proteins with high bioavailability. Whey protein is particularly effective post-workout. For plant-based options, soy protein and pea protein are the closest equivalents.

Should I change my protein intake when cutting?

Yes — increase it. When in a calorie deficit, higher protein intake (0.8–1.2g per pound) helps preserve lean muscle mass. This is one of the most evidence-backed strategies for improving body composition while losing fat.

What is a macro split?

A macro split is the percentage of your daily calories that come from protein, carbohydrates, and fat. A common split for fat loss is 40% protein, 30% carbs, 30% fat. For muscle gain, a 30% protein, 45% carbs, 25% fat split is often used.

Do I need to track macros to lose weight?

No — total calorie intake drives weight loss, not macro ratios. However, tracking macros gives you more control over body composition, energy levels, and hunger. It is especially useful if you want to lose fat while preserving muscle.

How many carbs should I eat per day?

Carb needs vary based on activity level and goals. After setting protein and fat targets, carbs fill the remaining calories. Active individuals and those focused on muscle gain benefit from higher carb intakes, while lower carb approaches can work for fat loss.

Should I go low fat or low carb for fat loss?

Research shows both approaches produce similar fat loss results when calories and protein are equated. Choose the approach that best fits your food preferences and lifestyle — the one you can sustain is the one that works.

How do I adjust my macros if I hit a plateau?

First verify your tracking accuracy. If intake is accurate, reduce calories by 100–150 per day by lowering carbs or fat slightly. Avoid dropping protein. Alternatively, increase daily activity with walking or NEAT before cutting more calories.

Can I build muscle and lose fat at the same time?

Yes — this is called body recomposition. It works best for beginners, those returning after a break, and people with higher body fat percentages. It requires eating near maintenance calories with high protein and consistent resistance training.

What is a healthy BMI?

A BMI between 18.5 and 24.9 is considered healthy for most adults. However, healthy BMI ranges can vary slightly by age and ethnicity. Asian populations may have health risks at lower BMI thresholds than the standard classification suggests.

Is BMI accurate for muscular people?

No — BMI is not accurate for highly muscular individuals. Since muscle is denser than fat, athletes and bodybuilders often show a high BMI despite having low body fat. In these cases, body fat percentage is a more reliable measure.

Can I have a normal BMI but still have too much body fat?

Yes. This is called normal weight obesity and occurs when someone has a healthy BMI but a high percentage of body fat due to low muscle mass. This is why BMI should always be considered alongside other measures like waist circumference and body composition.

How often should I calculate my BMI?

Once every 4–8 weeks is sufficient for most people. BMI changes slowly and daily fluctuations in water weight can give misleading readings. Track trends over months rather than obsessing over weekly numbers.

Does BMI differ for men and women?

The BMI formula is the same for men and women, but body fat distribution differs between sexes. Women naturally carry more body fat than men at the same BMI. Some health professionals use gender-specific adjustments when interpreting BMI results.

What should I do if my BMI is in the Obese range?

Start with sustainable changes — a modest calorie deficit, daily walking, and resistance training 2–3 times per week. Even a 5–10% reduction in body weight produces significant health benefits. Use a TDEE calculator to find your calorie target and a protein calculator to protect muscle while losing fat.

How do I calculate my calorie deficit?

Subtract your target daily calories from your TDEE. For example, if your TDEE is 2,500 kcal and you eat 2,000 kcal, your deficit is 500 kcal/day. Over 7 days that is a 3,500 kcal weekly deficit — enough to lose approximately 0.45 kg per week.

Is a 500 calorie deficit safe?

Yes — a 500 kcal/day deficit is widely considered safe and sustainable for most healthy adults. It produces roughly 0.5 kg of fat loss per week without significantly impacting energy levels or muscle mass, especially when paired with adequate protein intake.

What happens if my deficit is too large?

Deficits above 1,000 kcal/day increase the risk of muscle loss, nutrient deficiencies, fatigue, and metabolic adaptation. Staying in a moderate deficit is more effective over time.

Should I eat back calories burned during exercise?

It depends on how your TDEE was calculated. If your activity level already accounts for your workouts, do not eat them back. If you selected a sedentary multiplier and exercise on top of that, eating back 50–75% of burned calories is a reasonable approach.

Why am I not losing weight in a calorie deficit?

The most common reasons are underestimating calorie intake, overestimating portions, or not accounting for liquid calories and cooking oils. Water retention from high sodium, stress, or new training can also mask fat loss on the scale for 1–2 weeks.

How much protein should I eat in a calorie deficit?

Aim for 1.6–2.2g of protein per kg of bodyweight while cutting. Higher protein intake preserves muscle mass, keeps you fuller for longer, and has a higher thermic effect.

What is a healthy body fat percentage?

For men, a healthy body fat percentage is generally 14–24%. For women, it is 21–31%. Body fat above 25% for men and 32% for women is associated with increased health risks.

How accurate is the Navy method?

The US Navy method is accurate within 3–4% for most people when measurements are taken correctly. It is more accurate than BMI-based estimates but less precise than DEXA scans.

How often should I measure my body fat?

Every 4–6 weeks is sufficient for most people. Always measure under the same conditions: same time of day, same hydration level, and same method.

Can I lose fat and gain muscle at the same time?

Yes — this is called body recomposition. It is most effective for beginners, people returning after a break, and those with higher body fat percentages. It requires eating near maintenance calories with high protein intake and consistent progressive resistance training.

Why do men and women have different healthy body fat ranges?

Women naturally carry more essential fat than men due to hormonal differences and the physiological demands of reproduction. Women require approximately 10–13% essential fat compared to 3–5% for men.

What is the fastest way to lower body fat percentage?

A combination of a moderate calorie deficit, high protein intake, and resistance training produces the fastest sustainable results. Resistance training preserves muscle — losing muscle raises your body fat percentage even if the scale drops.

There is no universal good BMR — it varies based on your size, age, and gender. A typical BMR for an adult male is 1,600–2,000 kcal/day and for an adult female is 1,300–1,600 kcal/day.

Does muscle mass affect BMR?

Yes — muscle tissue burns approximately 3 times more calories at rest than fat tissue. Building muscle through resistance training raises your metabolic floor, making it easier to maintain a healthy weight over time.

Why does BMR decrease with age?

BMR decreases with age primarily because of sarcopenia — the natural loss of muscle mass that begins around age 30. Regular resistance training significantly slows this decline and can even reverse it.

Can I increase my BMR?

Yes — the most effective way to increase your BMR is to build muscle through resistance training. Other factors include eating adequate protein, getting sufficient sleep, managing stress, and avoiding prolonged very low calorie diets.

Should I eat at my BMR to lose weight?

No — eating exactly at your BMR is too aggressive and risks muscle loss, fatigue, and nutrient deficiencies. Your fat loss calorie target should be below your TDEE but above your BMR.

How does BMR differ from RMR?

BMR requires strict laboratory conditions — complete physical rest, a fasted state, and a thermoneutral environment. RMR is measured under less strict conditions and is typically 10–20% higher than BMR. The practical difference for calorie planning is minimal.

Macro Calculator — Calculate Your Daily Macros

Macro Calculator

Estimate your daily calories and macros based on your stats, activity level, goal, and macro preference.

Age

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Gender

Weight (kg)

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Height (cm)

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Activity level

Goal

Weekly pace

Used for fat loss and muscle gain goals.

Carb/fat preference

How this works: Calories are estimated from your stats and activity level. Protein is set by body weight and goal, fat by your macro preference, and carbs fill the remaining calories. Want a standalone calorie estimate? Use our TDEE Calculator.

Please fill in all fields with valid values.

Daily Calories

kcal/day

Maintenance

kcal/day

Your Macros

Protein

Carbs

Fat

What this means

What are macros?

Macros — short for macronutrients — are the three main nutrients your body uses for energy: protein, carbohydrates, and fat. Every food you eat is made up of some combination of these three.

Protein (4 calories per gram): Builds and repairs muscle tissue, supports recovery, and keeps you full
Carbohydrates (4 calories per gram): Your body’s primary fuel source, especially during exercise
Fat (9 calories per gram): Supports hormone production, vitamin absorption, and long-term energy

Tracking your macros gives you more control over your body composition than simply counting calories alone. Two people eating 2,000 calories per day can get very different results depending on how those calories are split between protein, carbs, and fat.

Macros by goal

Macros for fat loss

When cutting, your macro split should prioritize protein above everything else. Keeping protein high protects muscle mass while you are eating in a deficit — without it, your body will break down muscle alongside fat for energy.

Protein: 1.8–2.4 g/kg of body weight — non-negotiable during a cut
Fat: Keep at a minimum of 0.8–1.0 g/kg to support hormone function
Carbs: Fill the remaining calories — reduce these before reducing fat

A practical fat loss split for most people lands around 35–40% protein, 25–30% fat, 30–35% carbs. The exact numbers matter less than keeping protein high and staying in a consistent calorie deficit.

Macros for maintenance

At maintenance, you have more flexibility with your macro split. The priority shifts from aggressive protein targets to a balanced intake that supports energy, performance, and recovery day to day.

Protein: 1.4–2.0 g/kg — enough to maintain muscle and support training
Carbs: Your main energy source — keep these moderate to high if you train regularly
Fat: 25–35% of total calories works well for most people at maintenance

A common maintenance split is roughly 30% protein, 40% carbs, 30% fat, though this can be adjusted based on your personal preference and training style.

Macros for muscle gain

Building muscle requires both a calorie surplus and enough protein to support muscle protein synthesis. Carbohydrates also play a key role during a bulk — they fuel your training and support recovery, which is when muscle actually grows.

Protein: 1.6–2.2 g/kg — enough to maximize muscle growth without going overboard
Carbs: Increase these during a bulk to fuel workouts and spare protein for muscle building
Fat: Keep at a moderate level — 20–30% of total calories is sufficient

A typical muscle gain split looks like 25–30% protein, 45–50% carbs, 20–25% fat. The higher carb intake gives your muscles the glycogen they need to train hard and recover effectively.

Macro calculator examples

Example 1: 170 lb person cutting fat (balanced split)
A 170 lb person weighs about 77 kg. At a moderate deficit their daily target might be around 1,900 calories.
A balanced cut split could look like: 190g protein / 175g carbs / 55g fat

Example 2: 154 lb person maintaining (higher carb)
A 154 lb person weighs about 70 kg. At maintenance their daily target might be around 2,200 calories.
A higher carb maintenance split could look like: 165g protein / 248g carbs / 61g fat

Example 3: 200 lb person bulking (standard split)
A 200 lb person weighs about 91 kg. At a moderate surplus their daily target might be around 2,800 calories.
A muscle gain split could look like: 210g protein / 315g carbs / 75g fat

Macro calculator FAQ

What is the best macro split for fat loss?

There is no single perfect macro split for fat loss — but there are clear priorities. The most important rule is to keep protein high regardless of how you split the remaining calories:

Protein: 35–40% of total calories — protects muscle while in a deficit
Fat: 25–30% of total calories — minimum needed for hormone function
Carbs: 30–35% of total calories — fills remaining calories, fuels training

In practice, the exact split matters far less than two things: staying in a calorie deficit and hitting your protein target. Someone eating 40% protein and 35% carbs will get very similar fat loss results to someone eating 35% protein and 40% carbs — as long as total calories and protein grams are roughly the same. Start with a balanced split, track for 2–3 weeks, and adjust carbs or fat based on how you feel and perform during training.

Should I track macros or just calories?

It depends on your goal and how much detail you want. Tracking calories only works well if:

Your goal is general weight loss without performance concerns
You find detailed tracking stressful or unsustainable
You are already eating a reasonably balanced diet

Tracking macros is worth the extra effort if:

You are trying to build muscle while minimizing fat gain
You are an athlete or train seriously and need to fuel performance
You have stalled on calories-only tracking and want more control
You want to preserve muscle during an aggressive cut

The most practical middle ground for most people: track calories strictly and protein strictly, then let carbs and fat fall where they may. This gives you 80% of the benefit of full macro tracking with half the effort.

How do I hit my macro targets every day?

Consistency with macros comes down to planning and habit, not perfection. Here is what actually works:

Plan your protein first: Build every meal around a protein source. Once protein is covered, fill in carbs and fat around it. This is the single most effective macro habit.
Use a food tracking app: Apps like MyFitnessPal or Cronometer let you log meals and see your macro breakdown in real time. Log as you go rather than at the end of the day.
Prep repeatable meals: Having 3–4 go-to high-protein meals you rotate removes the daily decision fatigue of hitting your numbers.
Don’t aim for perfection daily: Being within 10–15g of your targets on any given day is close enough. What matters is your weekly average, not hitting exact numbers every single day.
Adjust as you go: If you are consistently over on fat and under on carbs, swap one fat-heavy food for a carb source. Small swaps compound over time.

Most people find that after 2–3 weeks of tracking, they develop an intuitive sense of their macros and need to log less obsessively to stay on target.

Do macros matter more than calories?

Calories determine whether you lose, maintain, or gain weight. Macros determine what you lose or gain. This is an important distinction:

If you eat 500 calories below your TDEE, you will lose weight regardless of your macro split
But if your protein is too low during that deficit, a significant portion of what you lose will be muscle — not just fat

Think of it this way:

Calories control the scale
Macros control your body composition

For basic weight loss, calories are enough. For optimizing how you look and perform — preserving muscle, fueling training, recovering well — macros give you a meaningful edge. The further along you are in your fitness journey, the more macros matter relative to just calories.

What happens if I go over my carbs but hit my calories?

Going over on carbs while staying within your total calorie target will not derail your progress. Carbohydrates do not cause fat gain on their own — excess calories do. If your total intake stays at or below your target, the exact carb number matters very little for fat loss or weight maintenance. Where it does matter:

If you went over carbs by reducing protein: This is the one scenario worth correcting. Lower protein during a cut increases muscle loss risk.
If you went over carbs AND over calories: The surplus — not the carbs themselves — is what drives fat storage.
Keto or low-carb dieters: If you are following a specific low-carb protocol, going over on carbs disrupts ketosis and matters more for that specific approach.

For most people following a standard balanced macro split: stay within calories, hit your protein, and don’t stress about carbs and fat being slightly off on any given day.

Should my macros change on rest days vs training days?

For most people, keeping macros consistent 7 days a week is the simplest and most effective approach. The difference in calorie burn between a training day and a rest day is smaller than most people think — typically 200–400 calories for a standard gym session. That said, carb cycling — eating more carbs on training days and fewer on rest days — is a legitimate strategy used by more advanced athletes: Training days (higher carbs):

More carbs to fuel the workout and replenish glycogen post-training
Protein stays the same
Slightly higher total calories

Rest days (lower carbs):

Reduce carbs by 50–100g
Slightly increase fat to compensate
Protein stays the same

If you are just starting out with macro tracking, keep it simple — use the same targets every day. Carb cycling adds complexity that is only worth it once you have mastered the basics of consistent tracking.