TDEE Calculator
How To Use Tdee Calculator?
Enter your age, sex, height, and weight, then optionally add your body fat percentage if known. Choose a BMR formula (Mifflin-St Jeor, Harris-Benedict, or Katch-McArdle), select the activity level that best matches your average weekly routine, and pick a goal such as maintaining weight, a mild deficit, a moderate deficit, or a mild surplus. Click the calculate button to get your BMR, TDEE, and target daily calorie intake, and use the result as an estimate that can be adjusted gradually based on how your body feels and performs.
Features of This Free Tdee Online Calculator?
This TDEE calculator supports multiple BMR formulas (Mifflin-St Jeor, Harris-Benedict, and Katch-McArdle), includes optional body fat percentage input for improved accuracy, offers multiple activity level selections, provides goal-based calorie adjustments (maintenance, mild deficit, moderate deficit, and mild surplus), delivers instant results for BMR, TDEE, and target calories, supports easy unit-based inputs, and is designed for simple, fast, and user-friendly calorie estimation.
What Is TDEE and Why Does It Matter?
TDEE stands for Total Daily Energy Expenditure: the total number of calories your body burns in a full day, including exercise, work, walking and even sleep. It starts with your BMR (Basal Metabolic Rate), the calories you would burn at complete rest, and then adds everything you actually do. If you eat close to your TDEE, your weight stays roughly the same. Eat below it and you lose weight gradually; eat above it and you gain. That is why this single number is the starting point of almost every sensible diet or muscle-building plan.
Step-by-Step: Reading Your Result
1. Note your BMR figure, which is your resting calorie burn.
2. Check your TDEE, which includes your chosen activity level.
3. Compare the target calories with your goal: deficit for fat loss, surplus for muscle gain.
A Worked Example
Take a 30-year-old man who is 175 cm tall and weighs 75 kg, with a moderately active routine. The Mifflin-St Jeor formula gives a BMR of about 1,678 kcal. Multiplying by the moderate activity factor of 1.55 gives a TDEE of roughly 2,600 kcal per day. To lose fat steadily he might choose a mild deficit of around 2,340 kcal, while a mild surplus of around 2,860 kcal would support slow muscle gain.
Helpful Tips
Be honest about your activity level, as overestimating it is the most common mistake. Recalculate whenever your weight changes by 3 to 4 kg, and use the figure for two to three weeks before adjusting it based on your real results.
Frequently Asked Questions
1. What is the difference between BMR and TDEE?
BMR is the calories you burn at complete rest. TDEE is your BMR multiplied by an activity factor, so it reflects a real day of living and moving.
2. Which BMR formula should I choose?
Mifflin-St Jeor suits most people. Choose Katch-McArdle if you know your body fat percentage, as it uses lean body mass.
3. How many calories should I cut to lose weight?
A mild deficit of about 10 to 15 per cent below TDEE is a sustainable starting point for most people.
4. Is the TDEE result exact?
No calculator is exact; treat the figure as a strong estimate. Track your weight for a few weeks and adjust by 100 to 200 kcal if needed.
5. Do I need to enter my body fat percentage?
No, it is optional. It only improves accuracy when you use the Katch-McArdle formula.
Use this calculator whenever your routine, weight or goal changes, and share it with training partners who want a clear, honest starting point for their daily calorie targets throughout the year.