What is TDEE?
Your Total Daily Energy Expenditure (TDEE) is an estimation of how many calories you burn per day when exercise is taken into account. It is calculated by first figuring out your Basal Metabolic Rate (BMR), then multiplying that value by an activity multiplier.
How to Use Your TDEE Results
To lose weight, consume 300-500 calories less than your TDEE. To gain weight, consume 300-500 more.