If you want to lose fat, build muscle, or maintain your current body weight, your Total Daily Energy Expenditure (TDEE) is one of the most useful numbers you can know. Use the calculator below to estimate your baseline calorie needs, then keep reading to learn how to apply your result in real life.
TDEE Calculator
Enter your details to estimate your BMR, maintenance calories, and target calories for your goal.
What Is TDEE?
TDEE stands for Total Daily Energy Expenditure. It is your estimated daily calorie burn after combining:
- Basal Metabolic Rate (BMR): calories your body uses at rest
- Activity: structured exercise and daily movement
- Thermic effect of food: calories used to digest and process food
In practical terms, TDEE is your maintenance calorie level. Eat around that number and your body weight should stay fairly stable over time.
How This Calculator Works
This page uses the Mifflin-St Jeor equation, one of the most commonly used formulas in evidence-based nutrition coaching.
Step 1: Estimate BMR
For men: BMR = 10 × weight(kg) + 6.25 × height(cm) − 5 × age + 5
For women: BMR = 10 × weight(kg) + 6.25 × height(cm) − 5 × age − 161
Step 2: Apply Activity Multiplier
Your BMR is multiplied by your selected activity factor to estimate daily maintenance calories. The calculator then suggests calories for fat loss and muscle gain based on a moderate adjustment.
How to Use Your Results
1) Start with maintenance for 10-14 days
If you are unsure where to begin, use the maintenance number and track your body weight each morning. Weekly averages are much more useful than day-to-day fluctuations.
2) Adjust based on trend, not emotion
- If your weekly average is rising and you want maintenance, decrease by 100-150 calories.
- If your weekly average is dropping too quickly during fat loss, increase by 100-150 calories.
- If muscle gain stalls for 2-3 weeks, add 100-150 calories.
3) Pair calories with smart macros
The calculator provides a simple macro target for your selected goal. Focus on consistency first:
- Protein: high enough to support recovery and muscle retention
- Fat: enough for hormones and satiety
- Carbs: fill the remaining calories for training performance and adherence
Choosing the Right Activity Level
Most people overestimate activity. Choose the level that reflects your overall week, not your hardest day. If your weight trend disagrees with the estimate, adjust calories and move on. The best plan is the one that works in your real life.
Common Mistakes to Avoid
- Using calorie targets as exact truth: your result is an estimate, not a lab test.
- Changing calories too often: give each change 10-14 days before deciding.
- Ignoring sleep and stress: both impact appetite, water retention, and training output.
- Neglecting food measurement accuracy: small logging errors add up quickly.
FAQ
How accurate is a TDEE calculator?
Most people land in a useful range, but individual metabolism and lifestyle can shift the true number. Expect to fine-tune after observing your weekly weight trend.
Can I use this for weight loss?
Yes. Choose “Lose fat” to get a moderate deficit target, then adjust slowly based on progress and energy levels.
Should I eat the same calories every day?
Not required. Weekly adherence matters more. Some people prefer higher-calorie training days and slightly lower rest days.
Final Thoughts
Your TDEE is a starting point, not a label. Use it to build a plan, track your data, and make small, calm adjustments over time. If you stay consistent, the math becomes your ally.