Kilograms (kg)
Pounds (lbs)
Select your preferred unit of weight.
Enter your height in centimeters.
Enter your age in years.
Male
Female
Select your biological sex.
Sedentary (little or no exercise)
Lightly active (light exercise/sports 1-3 days/week)
Moderately active (moderate exercise/sports 3-5 days/week)
Very active (hard exercise/sports 6-7 days a week)
Extra active (very hard exercise/sports & physical job)
Choose the option that best describes your lifestyle.
Enter your desired loss in kg or lbs per week (0.25-1 recommended).
Your Weight Loss Plan
Enter your details to see your TDEE and calorie targets.
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Basal Metabolic Rate (BMR)
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Total Daily Energy Expenditure (TDEE)
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Required Daily Calorie Deficit
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Daily Calorie Target
Formula Explanation:
Your TDEE is calculated using the Mifflin-St Jeor equation for BMR, then multiplied by your activity factor.
BMR (Men) = (10 * weight in kg) + (6.25 * height in cm) – (5 * age in years) + 5
BMR (Women) = (10 * weight in kg) + (6.25 * height in cm) – (5 * age in years) – 161
TDEE = BMR * Activity Factor
To lose weight, you need a calorie deficit. A deficit of 500-1000 calories per day typically leads to 1-2 lbs (0.5-1 kg) of weight loss per week.
Your Daily Calorie Target = TDEE – Daily Calorie Deficit.
Projected Weight Loss Over Time
Legend:Target Calories | Projected Weight
Weight Loss Progress Table
Week
Starting Weight (kg)
Ending Weight (kg)
Calories Consumed (Est.)
Weight Lost (kg)
What is TDEE to Lose Weight?
Understanding your Total Daily Energy Expenditure (TDEE) is fundamental to achieving sustainable weight loss. TDEE represents the total number of calories your body burns in a 24-hour period, encompassing all your daily activities, from basic bodily functions to intense workouts. When you aim to lose weight, the core principle is to create a calorie deficit, meaning you consume fewer calories than your TDEE. This calculator helps you precisely determine your TDEE and establish a safe, effective calorie target for weight loss.
Who should use it? Anyone looking to lose weight in a healthy and informed manner. Whether you're a beginner or have some experience with dieting, knowing your TDEE provides a scientific basis for your calorie intake, moving beyond guesswork. It's crucial for individuals seeking to shed fat, improve body composition, or simply maintain a healthier weight.
Common misconceptions about TDEE and weight loss include:
"All calories are equal": While the TDEE calculation focuses on calorie quantity, the quality of calories (nutrient density) significantly impacts health, satiety, and body composition.
"You can eat whatever you want if you exercise enough": While exercise increases TDEE, it's often difficult to burn off consistently high-calorie intake. A balanced approach is key.
"Starving yourself leads to faster weight loss": Extreme calorie restriction can lower your metabolism, lead to muscle loss, and be unsustainable. A moderate deficit is healthier and more effective long-term.
"TDEE is static": Your TDEE can change with shifts in metabolism, muscle mass, and activity levels. Regular recalculation might be necessary.
TDEE to Lose Weight Formula and Mathematical Explanation
The process of calculating your TDEE and subsequently your weight loss calorie target involves several steps. We primarily use the widely accepted Mifflin-St Jeor equation to estimate your Basal Metabolic Rate (BMR), which is the energy your body needs at rest. This is then adjusted for your activity level to arrive at your TDEE.
Step 1: Calculate Basal Metabolic Rate (BMR)
The Mifflin-St Jeor equation is considered one of the most accurate for estimating BMR:
For Men: BMR = (10 × weight in kg) + (6.25 × height in cm) – (5 × age in years) + 5
For Women: BMR = (10 × weight in kg) + (6.25 × height in cm) – (5 × age in years) – 161
Step 2: Calculate Total Daily Energy Expenditure (TDEE)
TDEE is your BMR adjusted for your physical activity level. This is done by multiplying your BMR by an activity factor:
TDEE = BMR × Activity Factor
The activity factors are generally categorized as:
Sedentary: 1.2
Lightly active: 1.375
Moderately active: 1.55
Very active: 1.725
Extra active: 1.9
Step 3: Determine the Calorie Deficit for Weight Loss
To lose weight, you must consume fewer calories than your TDEE. A deficit of approximately 3500 calories equates to about 1 pound (0.45 kg) of fat loss. For sustainable and healthy weight loss, a deficit of 500 to 1000 calories per day is typically recommended, aiming for 1 to 2 pounds (0.5 to 1 kg) of loss per week.
Daily Calorie Deficit = Desired Weekly Weight Loss (in kg) × 7700 / 7
(Note: 1 kg of fat is roughly 7700 calories)
Step 4: Calculate Your Target Daily Calorie Intake
Your target calorie intake for weight loss is your TDEE minus the calculated daily calorie deficit:
Sarah is a 30-year-old woman who wants to lose 1 kg per week. She currently weighs 75 kg, is 165 cm tall, and works a desk job but goes to the gym 3-4 times a week.
Interpretation: To achieve Sarah's goal of losing 1 kg per week, she should aim to consume approximately 1179 calories per day. This is a significant deficit, and she should monitor her energy levels and ensure she's getting adequate nutrients.
Example 2: Mark's Gradual Fat Loss
Mark is a 45-year-old male, 180 cm tall, weighing 90 kg. He has a sedentary job but walks his dog daily and wants to lose about 0.5 kg per week.
Inputs:
Current Weight: 90 kg
Height: 180 cm
Age: 45 years
Gender: Male
Activity Level: Lightly active (1.375) – accounting for daily walks
Interpretation: Mark should aim for a daily intake of around 1932 calories to lose approximately 0.5 kg per week. This provides a more moderate deficit, which is often easier to maintain and less likely to cause extreme hunger or fatigue, supporting his goal of gradual fat loss.
How to Use This TDEE to Lose Weight Calculator
Using this calculator is straightforward and designed to give you actionable insights into your weight loss journey. Follow these simple steps:
Enter Your Current Details: Accurately input your current weight, height (in cm), age, and select your gender.
Select Activity Level: Choose the activity level that best reflects your typical weekly exercise and daily movement. Be honest to get the most accurate TDEE estimate.
Set Your Weight Loss Goal: Specify your desired weekly weight loss rate in kilograms or pounds. A rate of 0.5 kg (approx. 1 lb) per week is generally considered healthy and sustainable.
Click "Calculate TDEE & Deficit": The calculator will instantly process your inputs.
How to Read Results:
Basal Metabolic Rate (BMR): This is the minimum number of calories your body needs to function at rest.
Total Daily Energy Expenditure (TDEE): This is your estimated daily calorie burn, including activity.
Required Daily Calorie Deficit: This shows how many calories you need to cut daily from your TDEE to meet your weight loss goal.
Daily Calorie Target: This is the final number of calories you should aim to consume daily to achieve your desired weight loss rate.
Decision-Making Guidance:
If your calculated target calorie intake seems too low (e.g., below 1200 kcal for women, 1500 kcal for men), consider adjusting your activity level slightly upwards or aiming for a slower weight loss rate (e.g., 0.25 kg/week). Very low intake can be detrimental to health and metabolism.
Use the "Projected Weight Loss Over Time" chart and "Weight Loss Progress Table" to visualize your progress and stay motivated.
Remember that these are estimates. Listen to your body, adjust as needed, and prioritize nutrient-dense foods. For personalized advice, consult a healthcare professional or registered dietitian.
Key Factors That Affect TDEE Results
While the TDEE calculator provides a strong estimate, several factors can influence your actual daily energy expenditure. Understanding these nuances can help you refine your approach to weight loss and achieve better results.
Body Composition (Muscle vs. Fat): Muscle tissue is metabolically more active than fat tissue. Individuals with higher muscle mass generally have a higher BMR and TDEE, even at the same weight. Strength training is crucial for building muscle and boosting metabolism.
Hormonal Factors: Hormones like thyroid hormones play a significant role in regulating metabolism. Conditions like hypothyroidism can slow down your metabolism, while hyperthyroidism can speed it up, impacting your TDEE.
Genetics: Your genetic makeup can influence your metabolic rate. Some individuals naturally burn calories faster or slower than others, regardless of lifestyle.
Thermic Effect of Food (TEF): Digesting and processing food requires energy. Protein has a higher TEF than carbohydrates or fats, meaning your body burns more calories digesting protein. Diet composition can subtly affect TDEE.
Non-Exercise Activity Thermogenesis (NEAT): This includes all calories burned from activities outside of planned exercise and sleep, such as fidgeting, walking around, and daily chores. NEAT can vary significantly between individuals and contribute substantially to TDEE.
Environmental Temperature: Your body expends energy to maintain its core temperature. Being in very cold or very hot environments can slightly increase your calorie burn.
Adaptation to Calorie Restriction: When you consistently eat in a calorie deficit, your body may adapt by slightly lowering your TDEE to conserve energy. This is known as metabolic adaptation and can sometimes slow down weight loss over time.
Medications: Certain medications can affect metabolism and energy expenditure as a side effect.
Frequently Asked Questions (FAQ)
What is the most accurate way to calculate TDEE?
The Mifflin-St Jeor equation used in this calculator is considered one of the most accurate BMR prediction formulas. However, TDEE is an estimate. For the most precise measurement, a metabolic test (like a VO2 max test) in a clinical setting could be used, but this is generally not practical for most individuals. Tracking your actual weight loss over several weeks while monitoring calorie intake provides the best real-world validation of your estimated TDEE.
Is a 1000 calorie deficit safe for weight loss?
A 1000 calorie deficit per day can lead to rapid weight loss (around 2 lbs or 1 kg per week). While effective for some, it might be too aggressive for others and can lead to fatigue, nutrient deficiencies, muscle loss, and gallstones if not carefully managed and done under professional supervision. Generally, a 500-750 calorie deficit is considered more sustainable and healthier for most individuals.
Can I lose weight if my TDEE is low?
Yes, you can still lose weight if your TDEE is low, but it requires a more significant calorie deficit, which might be harder to achieve and sustain. Focus on increasing your activity level (including NEAT) to raise your TDEE, and ensure your calorie intake is still sufficient to meet your basic nutritional needs and avoid excessive metabolic slowdown.
How often should I recalculate my TDEE?
It's a good practice to recalculate your TDEE every few months, especially if you've experienced significant weight changes (either loss or gain), have started or stopped a consistent exercise program, or notice your metabolism seems to have changed. If you hit a plateau, recalculating can be helpful.
What if my TDEE calculation seems too high or too low?
TDEE calculators provide estimates. If the result feels significantly off based on your experience, consider:
1. Double-checking your input values (height, weight, age, activity level).
2. Re-evaluating your activity level. Many people overestimate their activity.
3. Recognizing that individual metabolic rates can vary due to genetics or other factors not captured by the formula.
The best approach is to use the calculated TDEE as a starting point and adjust based on your body's response.
Does muscle gain affect TDEE?
Yes, muscle tissue is more metabolically active than fat tissue. Gaining muscle mass will slightly increase your BMR and therefore your TDEE. This is one reason why strength training is often recommended alongside calorie restriction for effective body recomposition and long-term weight management.
How long does it take to lose weight with a specific TDEE and deficit?
Weight loss timelines depend on the calorie deficit. A deficit of 500 calories per day aims for about 0.5 kg (1 lb) loss per week. A deficit of 1000 calories aims for about 1 kg (2 lbs) per week. So, to lose 10 kg (22 lbs) at 0.5 kg/week would take approximately 20 weeks. Remember that progress isn't always linear, and plateaus can occur.
Can I eat back calories burned from exercise?
This is a common question. While exercise increases your TDEE, accurately tracking calories burned during exercise is difficult. Most fitness trackers provide estimates. Generally, it's advisable to create your deficit based on your *estimated* TDEE without exercise and then view exercise calories as a bonus that can slightly accelerate loss or allow for minor flexibility in your diet. If you choose to eat back exercise calories, do so conservatively and monitor your progress.
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