The Science Behind TDEE: How Your Body Burns Calories
Discover the fascinating biology behind TDEE: cellular respiration, brown fat, hormones, metabolic adaptation, and genetics.
Determine your Daily Calorie Needs
Discover your personalized Daily Energy Expenditure (TDEE) and take control of your nutrition and fitness goals with our scientifically-backed calculator.
Based on the latest scientific research and formulas
Easy-to-understand charts and graphs
Tailored advice based on your unique profile
Understanding your Total Daily Energy Expenditure (TDEE) is key to achieving your fitness goals.
The number of calories your body needs to maintain basic functions at rest.
The calories burned through physical activity, including exercise and daily movements.
Your total daily calorie needs, calculated by multiplying your BMR by your activity level multiplier.
Discover the latest insights on TDEE, nutrition, and fitness to help you achieve your health goals.
Discover the fascinating biology behind TDEE: cellular respiration, brown fat, hormones, metabolic adaptation, and genetics.
Complete guide to BMR: what it is, how it is measured, factors affecting it, calculation formulas, and how to increase it.
Discover NEAT (Non-Exercise Activity Thermogenesis) - the hidden factor that can burn 2,000+ extra calories per day.
Discover the 10 most common TDEE mistakes that sabotage your diet and how to fix them.
Calculate your perfect calorie surplus for building lean muscle mass without excessive fat gain.
Women-specific TDEE guide covering menstrual cycle, pregnancy, menopause, and hormonal factors.
Find answers to common questions about TDEE, calorie counting, and achieving your fitness goals.
The calorie estimations should be within ~10% if you are honest about your activity level. For example, if you need about 2,300 calories per day, the calculator could be off by around 230 calories. Over the course of a month, this equals about 7,000 calories (2lbs). Most people overestimate their activity level, so it's important to be honest with yourself. Use the TDEE calculator as a reasonable estimate to start with, and adjust your calories based on your weight change over time.
There are 5 activity levels to choose from, based on scientific research:
Note that "workouts" mean real, legitimate workouts. If you exercise 7 days per week but take it very easy, this doesn't qualify as "Heavy Exercise". Be honest with yourself, and fine-tune your calories based on your results after a few weeks.
If you're not losing weight, you're likely eating too many calories. For best results:
Many people find success with eating at maintenance calories once per week while cutting, then maintaining a deficit during the other 6 days.
BMI is based on average weight for your height and was designed for population groups, not individuals. People with more muscle mass often score as "overweight" or even "obese" on the BMI scale, even though they have low body fat. Think about football players - they may be short but weigh more because they have significant muscle mass. Don't be discouraged by BMI if you're fit and exercise regularly.
No, you can lose almost as much weight as you want through diet alone. However, you'll be much healthier and look better if you include exercise in your routine. Remember: working out is for general health and fitness, while calorie intake is the primary factor for weight loss or gain.
If the gym intimidates you, focus on your diet first to lose weight, then start working out at home when you're ready. Even 10 minutes per day is better than nothing, and your fitness will improve over time until you can do longer workouts.
It's recommended to recalculate your TDEE every 3-6 months or whenever there's a significant change in your body weight (±5-10 lbs), fitness level, or daily activity routine. As you gain muscle or become more active, your TDEE may increase, even if your weight remains the same.
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Real stories from people who have transformed their lives with our TDEE calculator.
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