When choosing a TDEE (Total Daily Energy Expenditure) calculator, it is important to consider several things to ensure the calculation is as accurate as possible. First, the calculator should take into account not only your age, weight, and height, but also your activity level, as this affects your daily calorie needs. It is better to choose calculators that allow you to enter your exact activity level, rather than just offering a few general categories. Second, it is important to consider your goal – whether you want to maintain your weight, lose weight, or gain weight. Good calculators offer different options depending on these goals. Another important factor is the formulas. There are different approaches to calculating TDEE, such as the Harris-Benedict or Mifflin-St Jeor formulas. I prefer calculators that use several formulas and show the result for each so that you can compare. Finally, the calculator should be simple and easy to use. Personally, I like it when everything is intuitive, and also if the calculator offers additional nutrition and training tips based on my data.