There is no set caloric intake for everyone, even if they are the same weight. Lifestyle plays a large role, age, and your own body.

One person maybe able to eat 1200 calories and not feel deprived and lose weight.

Another person that may not work for them.

I use a software called Diet & Exercise Assistant. It uses basic math, you make up how what percentage of carbs, proteins and fats you want to have each day, along with how much weight you want to lose and by when. It will do the math and also warn you when your goals are unrealistic (i.e. I want to lose 12lbs in 5 days).

I've found it to be very helpful, and it's up to the end user what they choose to eat or enter in.