TDEE is your Total Daily Energy Expenditure
BMR is your Basic Metabolic Rate
TDEE is the amount of calories the calulators will say you need to lose, maintain, gain - it gives you a few readings for the different things.
BMR is the amount your body will burn just beig alive, so if you laid in bed all day, the lowest is what you would burn.
To give you an idea, this is mine at 5'1 and 196.7lbs/size 18 or XL, as you go by your clothes:
BMR = 1,495 Calories/day
Daily calorie needs based on activity level
Activity Level Calorie
Sedentary: little or no exercise 1,794
Exercise 1-3 times/week 2,055
Exercise 4-5 times/week 2,190
Daily exercise or intense exercise 3-4 times/week 2,317
Intense exercise 6-7 times/week 2,578
Very intense exercise daily, or physical job 2,840
Exercise: 15-30 minutes of elevated heart rate activity.
Intense exercise: 45-120 minutes of elevated heart rate activity.
Very intense exercise: 2+ hours of elevated heart rate activity.
https://www.calculator.net/bmr-calculator.html
This is my TDEE:
Based on your stats, the best estimate for your maintenance calories is
1,790 calories per day based on the Mifflin-St Jeor Formula, which is widely known to be the most accurate. The table below shows the difference if you were to have selected a different activity level.
Basal Metabolic Rate 1,491 calories per day
Sedentary 1,790 calories per day
Light Exercise 2,051 calories per day
Moderate Exercise 2,312 calories per day
Heavy Exercise 2,573 calories per day
Athlete 2,834 calories per day
https://tdeecalculator.net/
To lose weight, I need to eat about 1200-1400 per day. Unless on keto/ultra low carb.